CN101591085A - A kind of wastewater treatment and reuse technology for paper mill - Google Patents
A kind of wastewater treatment and reuse technology for paper mill Download PDFInfo
- Publication number
- CN101591085A CN101591085A CNA2008100381760A CN200810038176A CN101591085A CN 101591085 A CN101591085 A CN 101591085A CN A2008100381760 A CNA2008100381760 A CN A2008100381760A CN 200810038176 A CN200810038176 A CN 200810038176A CN 101591085 A CN101591085 A CN 101591085A
- Authority
- CN
- China
- Prior art keywords
- water
- waste water
- paper mill
- paper
- full factory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a kind of paper mill effluent and handle reuse method, described method comprises the steps: (a) physical treatment step: the full factory in paper mill waste water is provided, remove fiber and other impurity of the full factory in described paper mill waste water, obtain the full factory in the paper mill waste water of physical treatment; (b) biochemical treatment step: the full factory in the paper mill waste water of the physical treatment that described step (a) is obtained carries out biochemical treatment, precipitation, obtains meeting the safe pool water of required emission standard; (c) advanced treatment step: the air supporting water outlet that provides the machine room super efficiency shallow air flotation to handle, with the safe pool hydration of described air supporting water outlet and described step (b) and obtain middle water, water depth was handled during water carried out in described, water depth is handled and comprised in described: water carries out dosing coagulation, precipitation and filtration in described, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing, obtains water outlet.
Description
Technical field
The present invention relates to a kind of wastewater treatment and reuse technology, relate to pulping and paper-making factory waste water recycling technology particularly.
Background technology
China is a country that water resources is very short, and pulp and paper industry is the industry of a large amount of water consumptions, and the average water consumption of China's ton paper is more than 5 times of international most advanced level.A large amount of consume water resources must be brought the discharging of a large amount of waste water, causes serious environmental to pollute.When water was subjected to the restriction of resource, cost, environment etc., economizing on water, subtract dirt was the significant problem that each enterprise must face and must solve.
Paper-making effluent reuse degree has than big-difference with the different of conditions such as the kind of pulping process, slurry kind, bleaching method, paper grades, slurry character, chemical additive and consumption, as in paper mill with waste paperboard, waste paper fiber Production and Packaging paper, much realized zero release, but realized that in the paper mill that contains slurrying, bleaching the producer of zero release is few.The key that realizes zero release is wastewater treatment and reuse.The domestic advanced level of the plain boiled water ton paper quantity discharged of non-wood-fiber papermaking at present is 50-70m
3, abroad be 10-30m
3And with the cotton pulp be raw material production bond paper, senior cheque paper and other cheque papers be in the fine papers production process of representative, the secondary circulation of the plain boiled water that generally all turns round, but quantity discharged is still very high, ton paper quantity discharged is at 200-250m
3About.
The research of China's reusing sewage, just listed national research topic in as far back as in 1958, till now, the reusing sewage technology trends towards Study on Integrated, reclaiming process flow process (its water quality standard difference) to different reuse objects, the advanced treatment unit technology has different combinations, comprises technology such as coagulation, precipitation, clarification, air supporting, filtration, activated carbon adsorption, sewage water denitrification, biological denitrificaion dephosphorization, clarification filtration sterilization, BAF, micro-filtration, ultrafiltration, reverse osmosis, disinfection by ultraviolet light.For the reuse of industrialness water, different industrialness reuses requires different water quality, and domestic reuse water is used more extensive as industrial colling.
Pulping and paper-making factory comprehensive wastewater treatment project generally adopts first grade subsides both at home and abroad, and the secondary biochemical treatment method facts have proved that this is to administer comparatively proven technique of comprehensive wastewater.Though numerous papermaking enterprises have dropped into a large amount of financial resources and material resources make discharge of wastewater reach emission standard, waste discharge colourity is big, the relative problem of higher of COD but still exist.And the intact water of secondary biochemical treatment generally all discharges, and does not carry out the precedent of advanced treatment and reclamation as yet aspect paper after the sewage second-level biological treatment again in high culture.
For example, in Chinese patent application 00104238.6, disclose a kind of technology of pulp and paper waste_water, it is characterized in that the fento that reaches in zero release and the waste water behind the waste water treatment reclaims.Fento with the difficult 0.2 μ m-0.2mm that reclaims of usual method is used as paper pulp behind paper-making microfibre recovering device.Qualified discharge water reuse after sterilizing, removing algae again behind the secondary air-floatation is to reach the zero release purpose.The weak point of this patent is that this technology only is only applicable to the papermaking process of waste paperboard, waste paper fiber Production and Packaging paper, and can't be applicable to the senior papermaking process with paper that contains slurrying, bleaching.
A kind of technological process for the treatment of papermaking method is disclosed in Chinese patent application 200310102209.0, adopt sand filtration that the suspended substance in the waste water is removed, with the catalytic oxidation technology the most of oxidation operation in the waste water is taken out then, by hollow-fibre membrane salt in the waste water and undegradable organism are taken out, the water outlet that obtains at last can reach the requirement of water coolant reuse again.Processing costs of the present invention is lower, and is simple to operate, and operation is convenient, can reduce pollution, the protection environment.In addition, water outlet reaches the standard of water coolant, realizes useless Water reuse, can save a large amount of tap water, has solved the problem of water scarcity.The weak point of this patent application is, can't be applicable to the senior papermaking process with paper that contains slurrying, bleaching, therefore can only be with waste water as the water coolant reuse.
In sum, this area lacks a kind of paper mill effluent recycle utilization, this technology can realize making the senior waste water closed circulation in the paper mill of paper of using and use, and can significantly reduce the usage quantity and the discharged waste water of paper mill clear water, simultaneously less investment, working cost are low, water treatment effect is good, has vast economic benefit, social benefit and application prospect.
Summary of the invention
The objective of the invention is to obtain a kind of paper mill effluent recycle utilization, this technology can realize making the waste water closed circulation in the paper mill of bond paper, senior cheque paper and other fine paperss and use, and can significantly reduce the usage quantity and the discharged waste water of paper mill clear water, simultaneously less investment, working cost are low, water treatment effect is good, has vast economic benefit, social benefit and application prospect.
A further object of the invention is to obtain a kind of close-coupled processing efficiently apparatus of paper mill effluent recycle utilization that is used for.
Provide a kind of paper mill effluent to handle reuse method in a first aspect of the present invention, described method comprises the steps:
(a) physical treatment step: the full factory in paper mill waste water is provided, removes fiber and other impurity of the full factory in described paper mill waste water, obtain the full factory in the paper mill waste water of physical treatment;
(b) biochemical treatment step: the full factory in the paper mill waste water of the physical treatment that described step (a) is obtained carries out biochemical treatment, precipitation, obtains meeting the safe pool water of required emission standard;
(c) advanced treatment step: the air supporting water outlet that provides the machine room super efficiency shallow air flotation to handle, with the safe pool hydration of described air supporting water outlet and described step (b) and obtain middle water, water depth was handled during water carried out in described, water depth is handled and comprised in described: water carries out dosing coagulation, precipitation and filtration in described, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing, obtains water outlet.
In a preference, the standard of described step (b) is: contain the discharging standards of pulping and paper-making factory, more preferably, described emission standard is: COD is not higher than 100mg/L, and BOD is not higher than 24mg/L, SS: be not higher than 70mg/L, ammonia nitrogen is not higher than 15mg/L, and total phosphorus is not higher than 0.5mg/L.
In a preference, other impurity of described step (a) is common impurity in the full factory in the paper mill waste water in this area.
In a specific embodiment of the present invention, the full factory in the paper mill waste water of described step (a) is the senior full factory in the paper mill that manufacturing process produced waste water with paper, and described senior manufacturing process with paper comprises one or more technologies in slurrying, the bleaching.
Preferably, describedly seniorly be selected from bond paper, cheque paper (for example being senior cheque paper), cultural paper, speciality paper or its combination with paper.
In a specific embodiment of the present invention, the full factory in the paper mill waste water of described step (a) comprises pulp-making waste-water; Machine room waste water; Sanitary sewage; Compressed air station sewage; Air-conditioning sewage and carwash sewage.
Preferably, described pulp-making waste-water is cotton, linters oxonium base methodization mechanism pulp waste water.
Preferably, described papermaking is bond paper, senior cheque paper or its combination.
In a specific embodiment of the present invention,
The water outlet of described step (c) reaches the turbidity of 0.70NTU～1.90NTU, COD
Cr≤ 60mg/L, SS≤20mg/L, colourity≤30 platinum cobalt chromaticity units; And/or
The effluent reuse of described step (c) makes the waste water 80-90% of the full factory in described paper mill closed circulation use in slurrying and paper.
In a specific embodiment of the present invention,
In the physical treatment step of described step (a), the full factory in paper mill waste water is provided after, the full factory in described paper mill waste water enters pump well and regulates, and removes macrofiber and big impurity by scalping grizzly screen; Further remove fiber fines and small impurities by fine fack or other filtration unit then; Obtain the full factory in the paper mill waste water of physical treatment.
In a preference, the diameter of described macrofiber and big impurity is decided according to the diameter of scalping grizzly screen.Described scalping grizzly screen can adopt the traditional scalping grizzly screen in this area.Its diameter can be the traditional diameter range in this area.
In a preference, the diameter of described fiber fines and small impurities is decided according to the diameter of thin diagrid or other filtration unit.Described thin diagrid or other filtration unit can adopt the traditional thin diagrid in this area.Its diameter can be the traditional diameter range in this area.
In a specific embodiment of the present invention,
In the biochemical treatment step of described step (b), the waste water dosing of the full factory in the paper mill of described physical treatment is entered the aeration tank biochemical treatment; The paper mill effluent of described biochemical treatment enters second pond and safe pool precipitation; Must reach the safe pool water of emission standard.
In a specific embodiment of the present invention,
In the advanced treatment step of described step (c),
Water carries out dosing coagulation, precipitation and filtration in described in close-coupled processing device, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing; Preferably, in the described close-coupled processing device, adopt coagulant aids, coagulating agent in the dosing coagulation, wherein coagulant aids is a cationic polyacrylamide, and coagulating agent is a polymerize aluminum chloride; Perhaps
Described purifying waste water carries out carrying out disinfection and sterilization after fibrous bundle or the technology of biological membrane processing again; Preferably, dioxide peroxide (ClO is adopted in described sterilization and sterilization
2) as disinfectant, perhaps
Resulting effluent reuse is in slurrying or paper.
A specific embodiment of the present invention and in, the air supporting water outlet that the machine room super efficiency shallow air flotation of described step (c) is handled is collected waste water, cyclically utilizing, air supporting by machine room and is obtained after handling, and comprises the steps:
(i) collect machine room waste water, obtain mixing plain boiled water;
(ii) adopt the described mixing plain boiled water of super efficiency shallow air flotation technical finesse, obtain the gentle emersion water of laitance of dissolved air flotation;
(iii) the laitance of described dissolved air flotation is back to paper,
(iv) described air supporting water outlet is used for the advanced treatment step.
Preferably, when collecting machine room waste water in the described step (i),
Collect wet end of machine fourdrinier wire, felt spray and vacuum take-off plain boiled water; Stream send portion's white water loop unnecessary plain boiled water; Pressurized screen, slagging-off tailings waste water reclamation; The cooling and lubricating sealing water;
Preferably, outside being used to of the mixing plain boiled water pulpboard that described step (i) obtains, the broke system, unnecessary plain boiled water and other recycle-water are concentrated mixing to carry out step and are (ii) handled;
Preferably, laitance be back to pulpboard, broke system or its combination of described step in (iii).
Preferably, described step adds coagulant aids, coagulating agent in (iv), and more preferably, coagulant aids is a cationic polyacrylamide, and coagulating agent is a polymerize aluminum chloride.
In a specific embodiment of the present invention,
In the advanced treatment step of described step (c): middle water carries out dosing coagulation, precipitation and filtration, the process that is purified water adopts close-coupled processing device equipment, and described close-coupled processing device equipment is from upstream to the downstream and comprises: reaction zone, tube settling district, double-deck secondary filter district and mud district.
Further aspect of the present invention provides a kind of close-coupled processing apparatus, it is characterized in that, described close-coupled processing device equipment is from upstream to the downstream and comprises: reaction zone, tube settling district, double-deck secondary filter district and mud district.
Description of drawings
Fig. 1 is a machine room waste water circulation technical matters schema of the present invention.
Fig. 2 is the process flow sheet of wastewater treatment and reuse technology for paper mill of the present invention.
Embodiment
The inventor by improving preparation technology and operational path, reduces quantity discharged through extensive and deep research, has obtained the excellent especially paper mill effluent in a kind of environmental protection aspect and has handled reuse method.Finished the present invention on this basis.In a preference, this paper mill effluent is suitable for producing the manufacturing of bond paper, senior cheque paper and other fine paperss, realizes the reuse of waste water closed circulation.
As used herein, term " the senior paper of using " is often referred to and contains the paper of using that in slurrying, the bleaching process one or more obtain in the paper technology.Describedly seniorly draw together bond paper, senior cheque paper, cultural paper and speciality paper with paper bag.These are senior can to adopt cotton, linters oxonium base methodization mechanism slurry, commercially available market pulp board slurrying manufacturing with paper.
As used herein, term " use of waste water closed circulation " is meant that waste water all or substantially recycles.For example at least the full factory in the paper mill of 80-90 weight % waste water recycling in paper industry.
Below describe in detail to various aspects of the present invention:
Paper mill effluent is handled reuse method
A kind of paper mill effluent is handled reuse method, and described method comprises the steps:
(a) physical treatment step: the full factory in paper mill waste water is provided, removes fiber and other impurity of the full factory in described paper mill waste water, obtain the full factory in the paper mill waste water of physical treatment;
(b) biochemical treatment step: the full factory in the paper mill waste water of the physical treatment that described step (a) is obtained carries out biochemical treatment, precipitation, obtains meeting the safe pool water of required emission standard;
(c) advanced treatment step: the air supporting water outlet that provides the machine room super efficiency shallow air flotation to handle, with the safe pool hydration of described air supporting water outlet and described step (b) and obtain middle water, water depth was handled during water carried out in described, water depth is handled and comprised in described: water carries out dosing coagulation, precipitation and filtration in described, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing, obtains water outlet.
Preferably, described standard is: the discharging standards that contains pulping and paper-making factory.More preferably, described emission standard is the following level that is higher than discharging standards: COD is not higher than 100mg/L, and BOD is not higher than 24mg/L, SS: be not higher than 70mg/L, ammonia nitrogen is not higher than 15mg/L, and total phosphorus is not higher than 0.5mg/L.
The advanced treatment step of step (c): the air supporting water outlet that provides the machine room super efficiency shallow air flotation to handle, with described air supporting water outlet and safe pool hydration and obtain middle water, water depth was handled during water carried out in described, water depth is handled and comprised in described: water carries out dosing coagulation, precipitation and filtration in described, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing, obtains water outlet.
Particularly, described water outlet can reach the turbidity of 0.70NTU～1.90NTU, COD
Cr≤ 60mg/L, SS≤20mg/L, colourity≤30 platinum cobalt chromaticity units
(a) physical treatment step
In a specific embodiment of the present invention, in the described physical treatment step, the full factory in paper mill waste water is provided after, the full factory in described paper mill waste water enters pump well and regulates, and removes macrofiber and big impurity by scalping grizzly screen; Further remove fiber fines by fine fack or other filtration unit then; Obtain the full factory in the paper mill waste water of physical treatment.
The full factory in paper mill waste water is mainly the waste water of not collection and recycle.
Particularly, in the full factory in the paper mill waste water physical treatment technology: the full factory in paper mill waste water comprises pulp-making waste-water (comprise cotton, linters oxonium base methodization mechanism slurry or adopt the market pulp board pulp-making waste-water); Machine room waste water; Sanitary sewage; Compressed air station sewage; Air-conditioning sewage and carwash sewage etc.Usually full factory waste water can enter pump well and regulate, and removes macrofiber and big impurity by scalping grizzly screen; Further remove fiber fines by fine fack or other filtration unit then.
(b) biochemical treatment step
In a specific embodiment of the present invention, in the described biochemical treatment step, the waste water dosing of the full factory in the paper mill of described physical treatment is entered the aeration tank biochemical treatment; The paper mill of described biochemical treatment enters second pond and safe pool precipitation; Must reach the safe pool water of emission standard.
Particularly, in the biochemical processing step, the waste water of removing fiber and impurity enters the active sludge aeration tank and can carry out the nutritive salt adjusting to sewage before.Waste water after the dosing enters the biochemical treatment of active sludge aeration tank; Import behind the active sludge aeration in second pond, two settling ponds of safe pool, sludge settling is to the bottom in settling pond, and the mud after the clarification turns back to the aeration tank to guarantee sufficient sludge quantity in the aeration tank, and seldom part is as sludge treatment (being called excess sludge).Water after the clarification enters post-processed, and the water of safe pool reaches emission standard fully.
(c) advanced treatment step
In a specific embodiment of the present invention, in the described advanced treatment step,
Water carries out dosing coagulation, precipitation and filtration in described in close-coupled processing device, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing; Perhaps
Described purifying waste water carries out carrying out disinfection and sterilization after fibrous bundle or the technology of biological membrane processing again; Perhaps
Resulting effluent reuse is in slurrying or paper.
Preferably, in the described close-coupled processing device, adopt coagulant aids, coagulating agent in the dosing coagulation, wherein coagulant aids is a cationic polyacrylamide, and coagulating agent is a polymerize aluminum chloride.
Preferably, dioxide peroxide (ClO is adopted in described sterilization and sterilization
2) as disinfectant.
In a specific embodiment of the present invention, the effluent reuse in all described advanced treatment steps makes the full factory in described paper mill waste water closed circulation use in slurrying and paper.
In a specific embodiment of the present invention, the full factory in described paper mill waste water comprises pulp-making waste-water; Machine room waste water; Sanitary sewage; Compressed air station sewage; Air-conditioning sewage and carwash sewage.
Preferably, described pulp-making waste-water is cotton, linters oxonium base methodization mechanism pulp waste water.In addition, described pulp-making waste-water can also be commercially available market pulp board pulp-making waste-water.
Preferably, described papermaking is bond paper, senior cheque paper or its combination.
In an object lesson of the present invention, full factory waste water comprises cotton, linters oxonium base methodization mechanism slurry or adopts the market pulp board pulp-making waste-water; Machine room waste water; Compressed air station sewage; Air-conditioning sewage; Carwash sewage and sanitary sewage.
Particularly, in the middle water depth treatment technology: middle water depth processing is carried out in the unnecessary water outlet of getting after safe pool water and machine room super efficiency shallow air flotation are handled, and reduces turbidity, colourity, hardness, suspended solid, so that realize three grades of reuses of waste water.The unnecessary water outlet of safe pool water and air supporting enters collection and mixes, reaction, precipitation, filter effective integrated treater in one, add coagulant polymeric aluminium chloride successively, the coagulant aids cationic polyacrylamide, carry out sufficient flocculation reaction at reaction zone waste water and medicament by the agitator that is provided with, reaction zone is divided into three layers, mechanical stirrer is housed, the water that goes out the reaction zone flocculation enters the settling region, the settling region is to remove the suspended substance through flocculating in the waste water by the high-efficiency pipe chute settling vessel that is arranged in the reactor, suspended substance is deposited on the inclined tube inwall, be deposited to the mud collection area of bottom, settling region then downwards along inner wall surface, mud collection area mud regularly is discharged to the workshop trench by shore pipe, finally gets back to waste water processing station of full factory and handles.The mud district is positioned at the bottom of settling region, is triangular groove shape, is used for the collection of precipitating sludge and temporary.The triangular groove bottom is provided with shore pipe, regularly carries out spoil disposal; The post precipitation clarified wastewater flows to filtrating area by the water outlet V-notch weir that top, settling region is provided with.Waste water not only can effectively be removed suspended substance in the settling region, can also remove colourity, oil or be partly dissolved organic matter.Filtrating area is to remove suspended substance residual in the waste water by the double medium filtration filler that is arranged in the reactor.The waste water that flows into from the settling region carries out water distribution by the water distribution V-notch weir that is arranged on filtrating area top, and waste water is by the water inlet of filtrating area top, behind the double medium filtration filtrate, by the rising pipe water outlet of filtrating area bottom.Filtrating area utilize little coagulation and filtration principle to remaining colloidalmaterial in the waste water by seizure, absorption, filtration treatment, can further reduce the content of organic pollutant in the waste water (as COD, BOD etc.), reduction to the turbidity of waste water and colourity is effective especially, also make suspended substance be reduced to extremely low level, improve the water clarification degree.
Technical finesse, sterilization and sterilizations such as fibrous bundle or microbial film are carried out in water outlet more successively, and disinfectant adopts dioxide peroxide (ClO
2), handle the back water outlet and enter reuse pool.Behind effective integrated treating plant and disinfection, the water turbidity of water outlet is more stable, all the time at 0.70NTU～1.90NTU, and COD
Cr≤ 60mg/L, SS≤20mg/L, colourity (platinum cobalt chromaticity unit)≤30, water quality reaches the requirement of papermaking water fully.Water after the processing complete 100% be back to each production in slurrying and the paper.
In a specific embodiment of the present invention, described machine room waste water adopts the cyclically utilizing technology to obtain, and this reuse technology comprises the steps:
(i) collect machine room waste water, obtain mixing plain boiled water;
(ii) adopt the described mixing plain boiled water of super efficiency shallow air flotation technical finesse, obtain the gentle emersion water of laitance of dissolved air flotation;
(iii) the laitance of described dissolved air flotation is back to paper,
(iv) described air supporting water outlet is used for the advanced treatment step.
Preferably, described coagulant aids, the coagulating agent of in this process, adding, more preferably, coagulant aids is a cationic polyacrylamide, coagulating agent is a polymerize aluminum chloride.
Preferably, when described laitance further is back to paper, being back to pulpboard, broke system or its combination.
Preferably, when collecting machine room waste water, collect wet end of machine fourdrinier wire, felt spray and vacuum take-off plain boiled water; Stream send portion's white water loop unnecessary plain boiled water; Pressurized screen, slagging-off tailings waste water reclamation; The cooling and lubricating sealing water.
In a preference, outside being used to of the mixing plain boiled water pulpboard of collecting in the step (i), the broke system, unnecessary plain boiled water and other recycle-water are concentrated and are mixed into super efficiency shallow air flotation and carry out step processing (ii).
In a preference, machine room waste water directly enters full factory Waste Water Treatment (for example entering by trench) in the step (i), for example again as scrubbing waste water, deslagging waste water etc.
More specifically, in the machine room cyclically utilizing technology, machine room waste water is mainly produced by refining, paper machine, auxiliary material, broke treatment operation, and its concrete processing step of machine room waste water circulation technology is as follows:
(1), wet end of machine fourdrinier wire spray and wet end vacuum furnace, vacuum chamber and vacuum blower suction air water separator separate plain boiled water; Pressurized screen, slagging-off tailings waste water; Stream send the unnecessary plain boiled water of portion's white water loop, the unification of broke system washing concentrating plain boiled water to be collected into the tailings receiving tank, and the plain boiled water in the tailings receiving tank is by being pumped to pulpboard pulping system and broke system reuse, and the unnecessary plain boiled water of tailings receiving tank enters super efficiency shallow air flotation and handles.
(2), pump, stirring, jordan and other apparatus cools lubrication and seal water; Felt spray and felt vacuum furnace, vacuum chamber suction air water separator separate the plain boiled water unification and are recycled to the collection melt pit, and melt pit is collected waste water and the unnecessary plain boiled water of tailings receiving tank and is mixed into the super efficiency shallow air flotation processing by pumping separately.
(3), melt pit adopts the super efficiency shallow air flotation technology to handle after collecting waste water and the unnecessary plain boiled water mixing of tailings receiving tank, in this process, add coagulant polymeric aluminium chloride, coagulant aids cationic polyacrylamide successively by line mixer, the further reuse of the laitance of dissolved air flotation, the air supporting water outlet is according to producing can be used for of needs pulpboard, broke system, the unnecessary water outlet of air supporting is further handled, reduce turbidity, colourity, hardness, suspended solid, so that realize three grades of reuses of waste water.
(4), unnecessary air supporting water outlet and safe pool water carry out in water depth handle, enter effective integrated treater successively, dosing coagulating sedimentation and filtration; Technical finesse such as fibrous bundle or microbial film; Carry out disinfection again and sterilization after the processing.
Paper mill effluent is handled equipment for reclaiming
Paper mill effluent reuse technology of the present invention can adopt traditional paper mill effluent to handle equipment for reclaiming.For example, described equipment comprises: physical processing unit: the full factory in paper mill waste water is provided, removes fiber and other impurity of the full factory in described paper mill waste water, obtain the full factory in the paper mill waste water of physical treatment; Biochemical treatment unit: the full factory in the paper mill of described physical treatment waste water is carried out biochemical treatment, precipitation, obtain the safe pool water of emission standard; Advanced treatment unit: the air supporting water outlet that provides the machine room super efficiency shallow air flotation to handle, with described air supporting water outlet and safe pool hydration and obtain middle water, water depth was handled during water carried out in described, water depth is handled and comprised in described: water carries out dosing coagulation, precipitation and filtration in described, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing, obtains turbidity≤3NTU, colourity (platinum cobalt chromaticity unit)≤30, hardness (with CaCO
3Meter)≤450mg/L, COD
Cr≤ 60mg/L, suspended solid be not higher than≤water outlet of 20mg/L.(all indexs are all measured according to the GB standard method of test)
Particularly, described equipment can comprise: the effective integrated cleaner treatment system that integrates dosing air mix facilities (optional), reaction zone, tube settling district, mud district, double medium filtration district and annex thereof; Fibrous bundle or microbial film are the filtration unit of filtration medium; Between hydrochloric storage, between sodium chlorate storage, the dioxide peroxide feeder sterilizing unit that equipment such as storage tank, dioxide peroxide maker are formed of holding concurrently.
In a specific embodiment of the present invention, described effective integrated treater is the core processing unit of sewage disposal, and equipment can be divided into four districts on structure: reaction zone, tube settling district, double-deck secondary filter district, mud district and annex thereof.Above-mentioned four districts adopt and go from upstream to the arrangement that the downstream interconnects.
Major advantage of the present invention is as follows:
(1) common waste water closed circulation reuse technology (also being zero release) is only applicable to the manufacturing with waste paperboard, waste paper fiber Production and Packaging paper (the common paper of using), and the invention provides a kind of common paper and senior waste water closed circulation reuse technology with paper used that be applicable to.
(2) wastewater treatment and reuse technology for paper mill of the present invention comprises that successively the total waste water in paper mill enters pump well and regulates, and removes macrofiber and big impurity by scalping grizzly screen; Further remove fiber fines by fine fack or other filtration unit then; Dosing enters the aeration tank biochemical treatment; Enter second pond and safe pool precipitation; The safe pool water outlet reaches emission standard fully, but must further handle to reduce turbidity, colourity, hardness, suspended solid, realizes three grades of reuses of waste water.Get the water of safe pool and the water outlet of machine room super efficiency shallow air flotation processing and carry out middle water depth processing, enter effective integrated treater successively, dosing coagulating sedimentation and filter packing filter; Technical finesse such as fibrous bundle or microbial film; Carry out disinfection again and sterilization after the processing.The turbidity of handling the back water outlet is more stable, all the time at 0.70NTU～1.90NTU, and CODcr≤60mg/L, SS (suspended substance)≤20mg/L, colourity (platinum cobalt chromaticity unit)≤30, water quality reaches the requirement of papermaking water fully; Handle the back water outlet and enter reuse pool, being back in slurrying and the paper of the water after the processing complete 100%.The present invention can realize the purpose that pulping and paper-making factory waste water closed circulation is used, and has significantly reduced the usage quantity and the discharged waste water of paper mill clear water, and less investment, working cost are low simultaneously, and water treatment effect is good, has fabulous application prospect.
Compound provided by the present invention can be synthetic by marketable material and traditional chemical transform mode.For example coagulant aids is a cationic polyacrylamide, and coagulating agent is a polymerize aluminum chloride, and all can contain uncommon water purifying plant factory by Yixing, Jiangsu provides.
Other aspects of the present invention are because the disclosure of this paper is conspicuous to those skilled in the art.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example usually according to normal condition (standard GB), or carries out according to the condition that manufacturer advises.Unless otherwise indicated, otherwise all umbers are weight part, and all per-cents are weight percentage.
Unless otherwise defined or explanation, same meanings of being familiar with of all specialties used herein and scientific words and those skilled in the art.Any in addition method similar or impartial to described content and material all can be applicable in the inventive method.
Embodiment 1
Below in conjunction with accompanying drawing content of the present invention is described in further detail:
For adopting market pulp board such as cotton starch plate, pulp plate, jute pulp plate, needlebush pulpboard, leaf wood pulpboard, or adopt the slurry that supplies of slip house to produce the machine room of bond paper, senior cheque paper and other fine paperss, workshop waste water is mainly produced by refining operation, paper machine operation, auxiliary material operation, broke treatment operation, with reference to Fig. 1---shown in the machine room waste water circulation technical matters schema, wet end of machine fourdrinier wire spray and wet end vacuum furnace, vacuum chamber and vacuum blower suction air water separator separate plain boiled water; Pressurized screen, slagging-off tailings waste water; Stream send the unnecessary plain boiled water of portion's white water loop, the unification of broke system washing concentrating plain boiled water to be collected into the tailings receiving tank, and the plain boiled water in the tailings receiving tank is by being pumped to pulpboard pulping system and broke system reuse; Pump, stirring, jordan and other apparatus cools lubrication and seal water; Felt spray and felt vacuum furnace, vacuum chamber suction air water separator separate the plain boiled water unification and are recycled to the collection melt pit, and melt pit waste water and the unnecessary plain boiled water of tailings receiving tank are mixed into the super efficiency shallow air flotation technology by pumping separately and handle.
Super efficiency shallow air flotation is handled:
1, a certain machine room super efficiency shallow air flotation is handled the water yield and water quality:
(1) handles the water yield: 1000m
3/ d
(2) influent quality: SS 200-300mg/l; COD 400-600mg/l; PH value 6-8.
2, major equipment configuration
PAC, CPAM line mixer, super efficiency shallow air flotation treater (main engine power=driving power 1.1KW+ casts aside mud spoon power 0.75KW=1.30KW for CQJ-4 type, Shanghai, Wuxi Dong Maisite environment company limited), high pressure tank: (0.6m
3, compressed air pressure 0.8Mpa workshop air compression station air feed), air supporting handles fresh water pump, laitance pump, molten gas reflux cycle pump (Q=21.7m are handled in air supporting
3/ h H=60m N=7.5KW), PAC dispensation apparatus (N=2.5KW, rotating speed 1500r/min), CPAM dispensation apparatus (N=2.5KW, rotating speed 1500r/min), PAC dosing spiral pump (Q=1m
3/ h, P≤0.6Mpa, N=1.5KW, variable frequency control), CPAM dosing spiral pump (Q=1m
3/ h, P≤0.6Mpa, N=1.5KW, variable frequency control), PAC storage pool (3m
3), CPAM storage pool (3M
3), air supporting handles clean water basin (12m
3), air supporting handles laitance pond (12m
3).
3, treating processes
(1) pharmacy concentration:
PAM (cationic polyacrylamide) strength of solution: 0.2 ‰
PAC (polymerize aluminum chloride) strength of solution: 5%
(2) dosing:
2.1PAC: before plain boiled water air inlet floating apparatus, add, add the 100---400PPM that dose is the plain boiled water flow (soup oven-dry weight/plain boiled water volumetric flow rate, density are all pressed 1 and calculated).
2.2CPAM: when plain boiled water air inlet floating apparatus, add, add the 1---20PPM that dose is the plain boiled water flow (soup oven-dry weight/plain boiled water volumetric flow rate, density are all pressed 1 and calculated).
2.3 specify: add dose and be subjected to multiple factor affecting such as the quality of medicine own, plain boiled water pH value, plain boiled water composition.
(3) air dissolving system processing parameter: Gas dissolving pipe intake pressure 0.45-0.55Mpa; Top hole pressure 0.40-0.5Mpa; Compressed air pressure 0.6-0.7Mpa; Air input 0.5-1.2m
3/ h.
(4) coagulation and air supporting treating processes are as Fig. 1---shown in the machine room waste water closed circulation reuse technology process flow sheet, melt pit collection waste water and the unnecessary plain boiled water of tailings receiving tank are by pumping separately, pass through the PAC line mixer successively, the CPAM line mixer, the wadding aggressiveness that plain boiled water and PAC coagulating agent, the reaction of CPAM coagulant aids form is delivered to CQJ type super efficiency shallow air flotation water purifier solid-liquid separation, dissolved air water adopts the clear water after self handling to reflux, and recirculation water relies on the pump pressurization to enter strong broad tracheae with pressurized air.By strong Gas dissolving pipe make air in 3～6 seconds rapidly uniform dissolution in water, and by balanced energy dissipator, make the stable release of micro-bubble, and with water in impurity particle and wadding grain adhere to mutually and a floating to the water surface, scum silica frost has been ladled out by the spirrillum dregs scraper of stop and rotation not, gradient by dregs scraper utilizes flow by gravity to sludge sump, again by the pumping stock mixing system; Clear water is by flowing to the clean water basin reuse to pulpboard pulping system and broke system certainly in the air supporting, and the further advanced treatment of unnecessary clear water reduces turbidity, colourity, hardness, suspended solid, so that realize three grades of reuses of waste water.The shallow air-floatation disposition sees Table 1:
Table 1 shallow air-floatation result table
| Import | Outlet | Clearance | |
| SS(mg/l) | 200-300 | 25-50 | 75％-92％ |
| COD(mg/l) | 400-600 | 250-350 | 30％-55％ |
| Turbidity (NTU) | 450-550 | 90-120 | 75％-85％ |
| pH | 6-8 | 6-8 |
Paper mill effluent physical treatment, biochemical processing:
For adopting cotton, linters oxonium base methodization mechanism slurry or adopting market pulp board slurrying, produce the paper mill of bond paper, senior cheque paper and other fine paperss, wastewater treatment is with reference to Fig. 2---shown in the wastewater treatment and reuse technology for paper mill process flow sheet, the first step (physical treatment): full factory of pulping and paper-making factory waste water enters pump well and regulates, and removes macrofiber and big impurity by scalping grizzly screen; Further remove fiber fines by fine fack or other filtration unit then; Second step (biochemical treatment): dosing enters the aeration tank biochemical treatment; Enter second pond and safe pool precipitation; The water of safe pool reaches emission standard fully.
1, paper-making effluent is formed and water yield situation
Paper-making effluent is formed and water yield situation sees Table 2:
Table 2 paper-making effluent is formed and water yield situation
Machine room waste water partly carries out one-level, secondary and three grades of cyclically utilizing, therefore enters the waste water total amount in sewage-farm in 6000-7000 ton/sky.
2, sewage treatment process characteristics:
Sewage treatment systems is made up of pretreatment technology, activated sludge process, post-processed and dewatering technology of mud, and technical process is as follows:
2.1 pretreatment technology
Industrial sewage and sanitary sewage that papermaking plant area produces come together in pump well, after solid-liquid separating machine separates, be promoted to the rotation fine fack by sewage pump, the sewage after fiber separation enters the aeration tank, before entering the aeration tank nutritive salt in the sewage is regulated.After the fiber that the rotation fine fack is separated passed through screw extrusion press, the fiber mass dryness fraction can reach 40%, and recycled fiber is taken out.
2.2 activated sludge process
Aeration tank and settling pond are the key components of biochemical processing process.When active sludge after settling pond clarification, the pool surface treated water is expelled to the safe pool settling pond from the sewage-farm, the mud after the clarification turns back to the aeration tank to guarantee in the aeration tank sludge quantity fully, seldom part is as sludge treatment.
Aerating system adopts very effective micro-hole aerator, by air is provided at the bottom of the pond.Aerator chain is transportable simultaneously, so the hybrid motion efficient in the pond is very high, has also just saved energy consumption naturally.
There are dissolved oxygen and redox measuring apparatus to control the operation of gas blower in the aeration tank,, have one to keep operation continuously in four gas blowers,, be arranged to automatic control for all the other several to guarantee the mixing of aeration tank for guaranteeing desired oxygen level.
Import in two settling ponds behind the active sludge aeration, here sludge settling is to the bottom, and the water after the clarification enters post-processed.
This technology is all controlled automatically by a PLC S5-100, can realize unattended, the level of automation height.
2.3 post-processed technology
The active sludge stage comes out, and enters the later stage pond through clarifying water, carries out a small amount of aeration there, and oxygen content is brought up near saturation value.Water after the processing reaches emission standard fully, and the water after the processing carries out advanced treatment with the follow-up effective integrated treating plant of pumping.
2.4 dewatering technology of mud
Excess sludge is pumped to mechanical thickener and band press from the returned sluge groove, carries out mechanical dehydration.Will add high molecular polymer in dehydration, the mud after dehydrated is transported to outside the factory with car.
3. processing unit parameter
3.1 processing parameter
3.1.1 entry pollution load
Average discharge: 292m
3/ h 6560m
3/ d
BOD
5： 250mg/l 1640kg/d
COD
cr： 670mg/l 4416kg/d
SS： 220mg/l 1456kg/d
3.2 processing unit parameter
3.2.1 pretreatment technology
Three ability 3 * 300m of sewage pump
3/ h
Two 2 * 300t/h of rotation fine fack
Two ability 2 * 2m of nutrition throwing device
3
3.2.2 activated sludge process
Aeration volume 8000m
3
Biological load 1660kgBOD
5/ d
Sludge loading 0.063BOD
5/ kgMLSS.d
Sludge content 3g/L
Volumetric loading 0.19kgBOD
5/ m
3.d
1.3 days residence time
Aeration ability 110m
3/ min
Active sludge pool volume 8000m
3
4 of gas blowers
Total capacity 110m
3/ min
Aerator model FRIOX
3.2.4 settling pond
Design discharge 350m
3/ h
Area 400m
2
3.2.5 later stage pond
Volume 2000m
3
Pass on 2 ability 2 * 300m of pump
3/ h
4. the result of sewage disposal and analysis
4.1 water outlet result:
Table 3 water outlet result
| Mean value (mg/l) | |
| CODcr | 60-100 |
| BOD 5 | 10-20 |
| SS | 40-60 |
From above table 3 as can be seen, the result in sewage-farm is well below the required value of State Bureau of Environmental Protection discharging.
Middle water depth is handled:
The 3rd step (advanced treatment): middle water depth processing is carried out in the unnecessary water outlet of getting after safe pool water and machine room super efficiency shallow air flotation are handled, and enters effective integrated treater successively, and dosing coagulating sedimentation and filter packing filter; Carry out technical finesse, sterilization and sterilizations such as fibrous bundle or microbial film after the processing again, reduce turbidity, colourity, hardness, suspended solid, so that realize three grades of reuses of waste water, being back in slurrying and the paper of the water after the processing complete 100%.
1, effective integrated processor processing
(1) various medicines, difference add snack made with traditional Chinese medicines, add the technical Analysis of dose to the treat effluent water quality impact
A, medicine are selected;
The safe pool waste water quality has following characteristics: turbidity is little, transparency good, be faint yellow, and impurity is fewer.At the above characteristics of sewage, determine to use high-purity polymerize aluminum chloride, cationic polyacrylamide (1,200 ten thousand molecular weight, ion degree: 50%) handle by 2 kinds of medicaments.
B, add dose
By test, high-purity polymerize aluminum chloride is mixed with the aqueous solution of 5% (massfraction), and cationic polyacrylamide is mixed with the aqueous solution of 2 ‰ (massfractions), and the consumption of high-purity polymerize aluminum chloride is 50PPM; The consumption of cationic polyacrylamide is 2PPM.
C, add snack made with traditional Chinese medicines
PAC adds a little at line mixer, and mounting distance 20 meters away from treater more than, makes it before entering the reaction mixing zone be arranged the 20-30 reaction times of second be; CPAM adds the reaction mixing zone that a little directly enters into close-coupled processing device, the reaction mixing time of integrated treater of the residence time, and the reaction times is about 6 minutes.
(2) production disposition
Integral water purifier equipment is by Shen credit environment-friendly engineering company of Tongji University Design and Machining, and integral water purifier is the core processing unit of sewage disposal.Equipment can be divided into four districts on structure: reaction zone, tube settling district, mud district, double medium filtration district and annex thereof.
1. reaction zone
The waste water of being sent here by sump pump with after two kinds of medicaments that add mix, enters in the reaction zone of integral water purifier in line mixer.In this zone, waste water and medicament carry out sufficient flocculation reaction by the agitator that is provided with, and reaction zone is divided into three layers, and mechanical stirrer is housed.
2. settling region
The settling region is to remove the suspended substance through flocculating in the waste water by the high-efficiency pipe chute settling vessel that is arranged in the reactor, suspended substance is deposited on the inclined tube inwall, be deposited to the mud collection area of bottom, settling region then downwards along inner wall surface, mud collection area mud regularly is discharged to the workshop trench by shore pipe, finally gets back to waste water processing station of full factory and handles.The post precipitation clarified wastewater flows to filtrating area by the water outlet V-notch weir that top, settling region is provided with.Waste water not only can effectively be removed suspended substance in the settling region, can also remove colourity, oil or be partly dissolved organic matter.
3. filtrating area
Filtrating area is to remove suspended substance residual in the waste water by the double medium filtration filler that is arranged in the reactor.The waste water that flows into from the settling region carries out water distribution by the water distribution V-notch weir that is arranged on filtrating area top, and waste water is by the water inlet of filtrating area top, behind the double medium filtration filtrate, by the rising pipe water outlet of filtrating area bottom.Filtrating area utilize little coagulation and filtration principle to remaining colloidalmaterial in the waste water by seizure, absorption, filtration treatment, can further reduce the content of organic pollutant in the waste water (as COD, BOD etc.), reduction to the turbidity of waste water and colourity is effective especially, also make suspended substance be reduced to extremely low level, improve the water clarification degree.
4. mud district
The mud district is positioned at the bottom of settling region, is triangular groove shape, and the triangular groove bottom is provided with shore pipe, and shore pipe is provided with manual mud valve, can regularly carry out spoil disposal.
The waste water of being sent here by sump pump with after two kinds of medicaments that add mix, enters in the reaction zone of integral water purifier in line mixer.Through continuous one month production run, two integral water purifying device operational excellences, treatment effect reaches designing requirement fully, and water outlet can be satisfied the water quality requirement of reuse.The turbidity test of handling back water the results are shown in Table shown in 4.
Table 4 operating records
Annotate: 1) be three days detection time, 10 hours every days, each 2 hour record.
2) during commissioning test, only turbidity is noted down.
3) the best adds dose and is: polymerize aluminum chloride (PAC) 50g/m
3,
Cationic polyacrylamide (CPAM) 2.0g/m
3
4) the treatment system test processing water yield is 100 tons/h.
Can find out obviously that from table 4 operating records under three days situation of continuous operation, the turbidity of treater a is more stable, fluctuates all the time between 0.70NTU～0.90NTU; And the turbidity comparison a of treater b exceeds a little, but also more stable, fluctuates between 1.65NTU～1.90NTU all the time, is far smaller than 3NTU, and the water quality requirement of reuse is satisfied in water outlet fully.
In the production test process, also COD, SS and the colourity of handling the back water outlet are measured, average experimental result is as shown in table 5:
Table 5 production test effluent quality
2, technology of biological membrane is handled
The technology of biological membrane processing is carried out in effective integrated cleaner water outlet again, further reduces colority of water, suspended solid, COD, and treat effluent the results are shown in Table 6.
Table 6 production test effluent quality
3, sterilization and sterilization
Effective integrated treating plant water outlet carries out disinfection and sterilization again, reduces growing of microorganism and the page cavity, brocken spectrum paper defects and the disconnected paper that cause, and reducing pipeline and groove jar etc. simultaneously grows thalline, thereby guarantees paper machine normal running and page quality.
Sterilizing unit is the unit with effective integrated treating plant water outlet disinfection, and sterilizing agent adopts dioxide peroxide (ClO
2).This unit comprises: between hydrochloric acid stores, between the sodium chlorate storage, the dioxide peroxide equipment room.In between hydrochloric acid stores the hydrochloric acid hold-up vessel is arranged; Feeder hold concurrently storage tank, dioxide peroxide maker are arranged in the dioxide peroxide equipment room.
Operation steps:
1) by mass ratio respectively add at 2: 1 clear water and solid sodium chlorate (as: the 200kg clear water: 100Kg solid sodium chlorate), opening material pump cuts out bottom valve, and the feeder both sides are communicated, behind the 15min, closing material pump, static 20min;
2) with unloading sour pump hydrochloric acid is added the hydrochloric acid hold-up vessel;
3) after above two steps are finished, open the volume pump on dioxide peroxide maker both sides simultaneously, the volume pump range just is decided to be 60 (converting by 100 corresponding 3.47L/h), open the clear water pipe afterwards, to produce negative pressure, the dioxide peroxide of generation can be added in the entry smoothly carry out disinfection;
4) amount of handling the chlorine residue in the water of back is measured, to determine the suitable range of dosing volume pump;
Water quality after the processing reaches the requirement of papermaking water fully, handles the back water outlet and enters reuse pool, and the water after the processing 100% is back to slurrying and paper is respectively used water spot.
3, effluent quality total analysis and service condition
In October, 2006, the operation of industrial experimentation continous-stable was carried out complete water quality analysis to the water outlet water sample after one month, and analysis report sees Table 7:
The total analysis of table 7 effluent quality
| Sequence number | Analysis indexes | Unit | Water quality |
| 1 | PH | 6.5-8.5 | |
| 2 | Turbidity (NTU) | Degree | ≤3 |
| 3 | Colourity (platinum cobalt chromaticity unit) | Degree | ≤30 |
| 4 | Soluble solid | Mg/L | ≤1000 |
| 5 | Suspended solid | Mg/L | ≤20 |
| 6 | CODcr | Mg/L | ≤60 |
| 7 | BOD5 | Mg/L | ≤10 |
| 8 | Total hardness (in CaCO3) | Mg/L | ≤450 |
| 9 | Total nitrogen | Mg/L | ≤10 |
| 10 | Iron | Mg/L | ≤0.3 |
| 11 | Excrement colibacillus group | (individual/L) | ≤2000 |
| 12 | Residual chlorine concentration should | mg/L | Greater than 0.3, less than 0.5 |
From the complete water quality analysis report explanation of table 7, reached the water of productive use standard of each water of productive use point of pulping and paper-making through the effluent quality of advanced treatment.In a middle of the month of producing, the paper quality that causes because of quality problem and the appearance of paper machine operation aspect problem do not appear.
All quote in this application as a reference at all documents that the present invention mentions, just quoted as a reference separately as each piece document.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (10)
1. a paper mill effluent is handled reuse method, it is characterized in that described method comprises the steps:
(a) physical treatment step: the full factory in paper mill waste water is provided, removes fiber and other impurity of the full factory in described paper mill waste water, obtain the full factory in the paper mill waste water of physical treatment;
(b) biochemical treatment step: the full factory in the paper mill waste water of the physical treatment that described step (a) is obtained carries out biochemical treatment, precipitation, obtains meeting the safe pool water of required emission standard;
(c) advanced treatment step: the air supporting water outlet that provides the machine room super efficiency shallow air flotation to handle, with the safe pool hydration of described air supporting water outlet and described step (b) and obtain middle water, water depth was handled during water carried out in described, water depth is handled and comprised in described: water carries out dosing coagulation, precipitation and filtration in described, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing, obtains water outlet.
2, the method for claim 1 is characterized in that,
The full factory in the paper mill waste water of described step (a) is the senior full factory in the paper mill that manufacturing process produced waste water with paper, and described senior manufacturing process with paper comprises one or more technologies in slurrying, the bleaching.
3, the method for claim 1 is characterized in that,
The full factory in the paper mill waste water of described step (a) comprises pulp-making waste-water; Machine room waste water; Sanitary sewage; Compressed air station sewage; Air-conditioning sewage and carwash sewage.
4, the method for claim 1 is characterized in that,
The water outlet of described step (c) reaches the turbidity of 0.70NTU～1.90NTU, COD
Cr≤ 60mg/L, SS≤20mg/L, colourity≤30 platinum cobalt chromaticity units; And/or
The effluent reuse of described step (c) in slurrying and paper, make the full factory in described paper mill waste water at least the 80-90% closed circulation use.
5, the method for claim 1 is characterized in that,
In the physical treatment step of described step (a), the full factory in paper mill waste water is provided after, the full factory in described paper mill waste water enters pump well and regulates, and removes macrofiber and big impurity by scalping grizzly screen; Further remove fiber fines and small impurities by fine fack or other filtration unit then; Obtain the full factory in the paper mill waste water of physical treatment.
6, the method for claim 1 is characterized in that,
In the biochemical treatment step of described step (b), the waste water dosing of the full factory in the paper mill of described physical treatment is entered the aeration tank biochemical treatment; The paper mill effluent of described biochemical treatment is entered second pond and safe pool precipitation; Must reach the safe pool water of emission standard.
7, the method for claim 1 is characterized in that,
In the advanced treatment step of described step (c),
Water carries out dosing coagulation, precipitation and filtration in described in close-coupled processing device, is purified water; Described purifying waste water carried out fibrous bundle or technology of biological membrane processing; Preferably, in the described close-coupled processing device, adopt coagulant aids, coagulating agent in the dosing coagulation, wherein coagulant aids is a cationic polyacrylamide, and coagulating agent is a polymerize aluminum chloride; Perhaps
Described purifying waste water carries out carrying out disinfection and sterilization after fibrous bundle or the technology of biological membrane processing again; Preferably, dioxide peroxide (ClO is adopted in described sterilization and sterilization
2) as disinfectant, perhaps
Resulting effluent reuse is in slurrying or paper.
8, the method for claim 1 is characterized in that, the air supporting water outlet that the machine room super efficiency shallow air flotation of described step (c) is handled obtains after collecting waste water, cyclically utilizing, air supporting processing by machine room, comprises the steps:
(i) collect machine room waste water, obtain mixing plain boiled water;
(ii) described mixing plain boiled water adopts the super efficiency shallow air flotation technical finesse, obtains the gentle emersion water of laitance of dissolved air flotation;
(iii) the laitance of described dissolved air flotation is back to paper,
(iv) described air supporting water outlet is used for the advanced treatment step.
9, the method for claim 1 is characterized in that,
In the advanced treatment step of described step (c): middle water carries out dosing coagulation, precipitation and filtration, the process that is purified water is carried out in close-coupled processing device equipment, and described close-coupled processing device equipment is from upstream to the downstream and comprises: reaction zone, tube settling district, double-deck secondary filter district and mud district.
10, a kind of close-coupled processing apparatus is characterized in that, described close-coupled processing device equipment is from upstream to the downstream and comprises: reaction zone, tube settling district, double-deck secondary filter district and mud district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100381760A CN101591085A (en) | 2008-05-29 | 2008-05-29 | A kind of wastewater treatment and reuse technology for paper mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100381760A CN101591085A (en) | 2008-05-29 | 2008-05-29 | A kind of wastewater treatment and reuse technology for paper mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101591085A true CN101591085A (en) | 2009-12-02 |
Family
ID=41405996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100381760A Pending CN101591085A (en) | 2008-05-29 | 2008-05-29 | A kind of wastewater treatment and reuse technology for paper mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101591085A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030447A (en) * | 2010-11-01 | 2011-04-27 | 湖南化工研究院 | Three-level comprehensive physicochemical and biochemical treatment method for papermaking wastewater |
| CN102174763A (en) * | 2010-12-30 | 2011-09-07 | 维达纸业(孝感)有限公司 | Treatment method for paper making waste water |
| CN101708927B (en) * | 2009-12-03 | 2011-11-09 | 中冶纸业银河有限公司 | Method for deeply processing waste water from paper making |
| CN102730876A (en) * | 2011-04-14 | 2012-10-17 | 富阳市清园城市综合污水处理有限公司 | Advanced treatment process for papermaking wastewater |
| CN102964030A (en) * | 2012-11-16 | 2013-03-13 | 富阳春江污水回用处理有限公司 | Novel waste paper papermaking waste water comprehensive treatment method and system |
| CN103043849A (en) * | 2012-11-27 | 2013-04-17 | 遵义市遵华纸业有限公司 | Method for recycling wastewater from papermaking without discharging |
| CN103508612A (en) * | 2012-06-15 | 2014-01-15 | 苏州腾辉环保科技有限公司 | Treatment process for papermaking industrial wastewater |
| CN103553267A (en) * | 2013-10-12 | 2014-02-05 | 遵义县新昌纸业有限公司 | Zero-discharge treatment process of papermaking wastewater |
| CN103723855A (en) * | 2013-12-13 | 2014-04-16 | 云南中烟昆船瑞升科技有限公司 | Pre-treatment technology for sewage produced during production of paper-making reconstituted tobaccos |
| CN103964612A (en) * | 2014-05-22 | 2014-08-06 | 北京赛科康仑环保科技有限公司 | Deaminizing treatment method of medium-concentration and low-concentration ammonia-nitrogen wastewater under high COD (Chemical Oxygen Demand), salt content and heavy metal content |
| CN104857773A (en) * | 2015-04-22 | 2015-08-26 | 浙江大盛纸业有限公司 | Treatment method for whitewater produced in papermaking |
| CN105986502A (en) * | 2015-02-16 | 2016-10-05 | 上海东冠纸业有限公司 | Treatment process of papermaking recovery pulp |
| CN107285571A (en) * | 2017-07-30 | 2017-10-24 | 合肥徽工工业自动化工程有限公司 | A kind of method of sewage multistep treatment |
| CN107445400A (en) * | 2017-08-25 | 2017-12-08 | 安徽亿洁环保科技有限公司 | A kind of sewage disposal system |
| CN109912122A (en) * | 2019-03-07 | 2019-06-21 | 南京永禾环保工程有限公司 | Wastewater deep treatment process |
| CN110885120A (en) * | 2019-12-05 | 2020-03-17 | 常州市振邦化工制造有限公司 | Efficient composite flocculant for papermaking sewage treatment |
| CN112342827A (en) * | 2020-10-29 | 2021-02-09 | 江苏理文造纸有限公司 | Long net paper machine wire press portion spraying water-saving system |
| CN112390432A (en) * | 2020-11-12 | 2021-02-23 | 玖龙纸业（太仓）有限公司 | Waste paper pulping and disintegrating white water circulating treatment device and method |
-
2008
- 2008-05-29 CN CNA2008100381760A patent/CN101591085A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708927B (en) * | 2009-12-03 | 2011-11-09 | 中冶纸业银河有限公司 | Method for deeply processing waste water from paper making |
| CN102030447A (en) * | 2010-11-01 | 2011-04-27 | 湖南化工研究院 | Three-level comprehensive physicochemical and biochemical treatment method for papermaking wastewater |
| CN102174763A (en) * | 2010-12-30 | 2011-09-07 | 维达纸业(孝感)有限公司 | Treatment method for paper making waste water |
| CN102174763B (en) * | 2010-12-30 | 2013-01-02 | 维达纸业(孝感)有限公司 | Treatment method for paper making waste water |
| CN102730876A (en) * | 2011-04-14 | 2012-10-17 | 富阳市清园城市综合污水处理有限公司 | Advanced treatment process for papermaking wastewater |
| CN102730876B (en) * | 2011-04-14 | 2014-01-15 | 富阳市清园城市综合污水处理有限公司 | Advanced treatment process for papermaking wastewater |
| CN103508612A (en) * | 2012-06-15 | 2014-01-15 | 苏州腾辉环保科技有限公司 | Treatment process for papermaking industrial wastewater |
| CN102964030B (en) * | 2012-11-16 | 2014-08-27 | 富阳春江污水回用处理有限公司 | Novel waste paper papermaking waste water comprehensive treatment method and system |
| CN102964030A (en) * | 2012-11-16 | 2013-03-13 | 富阳春江污水回用处理有限公司 | Novel waste paper papermaking waste water comprehensive treatment method and system |
| CN103043849A (en) * | 2012-11-27 | 2013-04-17 | 遵义市遵华纸业有限公司 | Method for recycling wastewater from papermaking without discharging |
| CN103553267A (en) * | 2013-10-12 | 2014-02-05 | 遵义县新昌纸业有限公司 | Zero-discharge treatment process of papermaking wastewater |
| CN103723855A (en) * | 2013-12-13 | 2014-04-16 | 云南中烟昆船瑞升科技有限公司 | Pre-treatment technology for sewage produced during production of paper-making reconstituted tobaccos |
| CN103964612A (en) * | 2014-05-22 | 2014-08-06 | 北京赛科康仑环保科技有限公司 | Deaminizing treatment method of medium-concentration and low-concentration ammonia-nitrogen wastewater under high COD (Chemical Oxygen Demand), salt content and heavy metal content |
| CN103964612B (en) * | 2014-05-22 | 2016-06-29 | 北京赛科康仑环保科技有限公司 | A kind of high COD, high salinity, high content of beary metal the deamination processing method of middle Low Concentration Ammonia Containing Wastewater |
| CN105986502A (en) * | 2015-02-16 | 2016-10-05 | 上海东冠纸业有限公司 | Treatment process of papermaking recovery pulp |
| CN104857773A (en) * | 2015-04-22 | 2015-08-26 | 浙江大盛纸业有限公司 | Treatment method for whitewater produced in papermaking |
| CN107285571A (en) * | 2017-07-30 | 2017-10-24 | 合肥徽工工业自动化工程有限公司 | A kind of method of sewage multistep treatment |
| CN107445400A (en) * | 2017-08-25 | 2017-12-08 | 安徽亿洁环保科技有限公司 | A kind of sewage disposal system |
| CN109912122A (en) * | 2019-03-07 | 2019-06-21 | 南京永禾环保工程有限公司 | Wastewater deep treatment process |
| CN110885120A (en) * | 2019-12-05 | 2020-03-17 | 常州市振邦化工制造有限公司 | Efficient composite flocculant for papermaking sewage treatment |
| CN112342827A (en) * | 2020-10-29 | 2021-02-09 | 江苏理文造纸有限公司 | Long net paper machine wire press portion spraying water-saving system |
| CN112390432A (en) * | 2020-11-12 | 2021-02-23 | 玖龙纸业（太仓）有限公司 | Waste paper pulping and disintegrating white water circulating treatment device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101591085A (en) | A kind of wastewater treatment and reuse technology for paper mill | |
| CN100500597C (en) | Zero-discharge process for treating, circulating and reutilizing algin production waste water | |
| CN103864266B (en) | A method for recycling waste paper and papermaking wastewater and sludge | |
| CN109437482A (en) | A kind of the efficient process system and its processing method of pharmaceutical industry production of raw medicine organic wastewater | |
| CN101074141B (en) | Process for regenerating, recovering and reutilizing low-concentration organic waste water | |
| CN113664023A (en) | System and process for purifying sewage by using kitchen waste hydrolysis as denitrification carbon source | |
| CN204958662U (en) | Proprietary effluent treatment plant of papermaking trade | |
| CN106242185B (en) | Banana pulp producing wastewater treatment | |
| CN100460592C (en) | Processing mthod of white water from paper making | |
| CN201746432U (en) | Apparatus for strengthening treatment of coking waste water | |
| CN103043789A (en) | Anaerobic reactor and treatment method of cotton pulp production waste water | |
| CN107585972A (en) | Grease processing waste water handling process and device | |
| CN107512830A (en) | A kind of cigar mill's process for comprehensively treating sewage | |
| CN107500476A (en) | A kind of high protein waste water treatment process | |
| CN110255824A (en) | A kind of pulping wastewater treatment method and system | |
| CN110642382A (en) | Anaerobic and aerobic composite biological treatment desalting method | |
| CN103524002B (en) | A kind of high fatty foods processing waste water treatment unit | |
| CN108623076A (en) | A kind of method and apparatus of processing whey wastewater | |
| CN103214154A (en) | Regenerative cycle and utilization device for papermaking deep-treatment wastewater | |
| CN117466479A (en) | Low-carbon recycling treatment process for bean product wastewater | |
| CN214299762U (en) | Polyester fiber waste water reuse of reclaimed water device | |
| CN217297620U (en) | Do benefit to kitchen garbage natural pond liquid mud-water separation's sewage treatment system | |
| CN216236438U (en) | Pretreatment system for garbage extrusion leachate | |
| CN202576156U (en) | Treatment device for APMP (Alkaline Peroxide Mechanical Pulp) pulping waste water | |
| CN114315034B (en) | Lemon processing wastewater treatment system and process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091202 |