CN106630134A - High-efficiency denitrification nitrogen removal device and method - Google Patents
High-efficiency denitrification nitrogen removal device and method Download PDFInfo
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- CN106630134A CN106630134A CN201611248653.7A CN201611248653A CN106630134A CN 106630134 A CN106630134 A CN 106630134A CN 201611248653 A CN201611248653 A CN 201611248653A CN 106630134 A CN106630134 A CN 106630134A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title abstract description 60
- 229910052757 nitrogen Inorganic materials 0.000 title abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 239000010865 sewage Substances 0.000 claims abstract description 49
- 238000005191 phase separation Methods 0.000 claims abstract description 47
- 230000001651 autotrophic effect Effects 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 22
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000008213 purified water Substances 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 7
- 239000005416 organic matter Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000005864 Sulphur Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 208000019901 Anxiety disease Diseases 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical group [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- 230000036506 anxiety Effects 0.000 description 3
- 238000011953 bioanalysis Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241001509286 Thiobacillus denitrificans Species 0.000 description 1
- 241000589651 Zoogloea Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a high-efficiency denitrification nitrogen removal device and a high-efficiency denitrification nitrogen removal method. The device comprises a water inlet part, a reaction part and a three-phase separation part which are sequentially connected in series, wherein the water inlet part comprises a water inlet used for allowing sewage and solid electron donors to enter; and autotrophic denitrification floras are arranged in the reaction part. When the sewage is treated by utilizing the nitrogen removal device disclosed by the invention, the nitric nitrogen treatment efficiency is high, secondary pollution is avoided, and the cost is low.
Description
Technical field
The present invention relates to water-treatment technology field, in particular to a kind of efficient denitrification denitrogenation device and method.
Background technology
As the nitrogen content being discharged into water body increases year by year, the increasingly serious of body eutrophication is caused, so as to
Water quality deterioration even lake is caused to be degenerated.China's major part fresh water water system becomes very fragile, water due to long-term eutrophication
The removal of middle nitrogen has become the focus widely paid close attention in water pollution control.
Removing the method for nitrate nitrogen (with the nitrogen that nitrate ion form is present) at present has bioanalysis, physical-chemical process etc.,
Wherein bioanalysis is widely used in sewage disposal with its low energy consumption, efficient advantage.Biological heterotrophic denitrification technique is
Current technology most commonly seen in bioanalysis sewage treatment project, its cardinal principle is：Under conditions of without molecular oxygen, heterotrophism
Denitrifying bacterium by the use of the organic matter in sewage as carbon source and electron donor, by NO3 -- N or NO2 -- N is converted into nitrogen, by nitrogen
Discharge water system.But the municipal wastewater of China and be exactly C/N ratios by main features such as the surface water of nitrate pollution, underground water
Value is relatively low, i.e., organic carbon source is not enough.In order to ensure treatment effect, it is necessary to add the organic matters such as a certain amount of acetic acid, ethanol and do carbon
Source, biosystem sludge output increases, and causes processing cost to greatly increase.And during with organic matter as denitrifying carbon source, due to water inlet
The fluctuation of water quality, it is easy to cause carbon source in water excessive or not enough, so as to cause secondary pollution or degree for the treatment of not enough.
The content of the invention
Present invention is primarily targeted at provide a kind of efficient denitrification denitrogenation device and method, to solve prior art in
Denitrogenation high cost and the problem of secondary pollution.
To achieve these goals, according to an aspect of the invention, there is provided a kind of efficient denitrification denitrogenation device, its
Including the water entering section, reacting part and the three phase separation portion that are sequentially connected in series setting, water entering section is provided with and is supplied for sewage and solid-state electronic
The water inlet that body is entered, is provided with autotrophic denitrification flora in reacting part.
Further, water entering section, reacting part and three phase separation portion are arranged in order from the bottom to top.
Further, denitrification denitrogenation device includes hollow cylinder, and water entering section is located at the lower end of hollow cylinder, three phase separation
Portion is located at the upper end of hollow cylinder, and between the water entering section and three phase separation portion in hollow cylinder reacting part is formed.
Further, the ratio of height to diameter of reacting part is not less than 4:1.
Further, three phase separation portion includes：Gas skirt, gas skirt is located at the top of reacting part；Discharge, discharge
One end is connected with gas skirt, and the other end extends to outside；Top settling zone, the bottom of top settling zone and the top phase of reacting part
Even, gas skirt is located in the settling zone of top.
Further, the radical length on the top of top settling zone is not less than 3 with the ratio of the radical length of reacting part:1.
Further, three phase separation portion also includes blind plate, and blind plate is arranged on one end away from reacting part of hollow cylinder, blind
Through hole is provided with plate, discharge extends to outside through through hole.
Further, three phase separation portion is additionally provided with treated water outlet, and treated water outlet is located at the side in three phase separation portion.
Further, three phase separation portion is additionally provided with bypass outlet, bypass outlet be arranged on three phase separation portion relative to
The opposite side of treated water outlet；Water entering section is additionally provided with backflow import, and backflow import is connected with bypass outlet.
Further, water entering section includes water inlet pipe and return duct, and water inlet pipe and return duct are arranged in hollow cylinder, enter
Water pipe has water inlet and the first delivery port, and return duct has backflow import and the second delivery port.
Further, water entering section also has water distribution orifice plate, and water distribution orifice plate is arranged in hollow cylinder, and positioned at water inlet pipe with it is anti-
Answer between portion.
Further, water entering section also includes spoil disposal drain, and spoil disposal drain is arranged on hollow cylinder.
Further, denitrification denitrogenation device also includes：Base, base is arranged on the bottom of hollow cylinder.
According to a further aspect in the invention, a kind of denitrification method is additionally provided, it is comprised the following steps：By solid-state
Electron donor is added in the sewage containing nitrate nitrogen, and autotrophy is carried out into the reacting part for being added with autotrophic denitrification flora from water entering section
Anti-nitration reaction, obtains mixture；Mixture is carried out into three phase separation, water is purified.
Further, in the sewage containing nitrate nitrogen, 10～100mg/L, the hydraulic detention time of reacting part is 1～3h.
Using technical scheme, denitrification denitrogenation device include being sequentially connected in series the water entering section of setting, reacting part and
Three phase separation portion, water entering section is provided with the water inlet entered for sewage and solid-state electronic donor, and autotrophy is added with reacting part
Denitrification flora.During concrete denitrogenation processing, solid-state electronic donor is added in sewage, and sewage introducing is contained into autotrophy
The reacting part of denitrification flora, can carry out autotrophic denitrification reaction.In the course of reaction, the nitrate nitrogen in sewage can be converted
For nitrogen discharge.Mixture containing nitrogen, sludge and purified water after reaction completes to separate in three phase separation portion, forms purification
Water and nitrogen are discharged, and autotrophic denitrification flora is settled down to reacting part.
Compared with acetic acid, ethanol etc., solid-state electronic donor low price and sulphur component content are high, autotrophic denitrification cost compared with
It is low.Meanwhile, autotrophic denitrification is that, without the anxiety for producing remaining organic matter, sludge yield is relatively low using inorganic matter as electron donor.Institute
So that autotrophic denitrification technique provides a kind of means of low energy consumption for the not enough sewage deep denitrogenation of carbon source.In a word, using this
Bright above-mentioned nitrogen rejection facility processes sewage, and the treatment effeciency of nitrate nitrogen is high and relatively low without secondary pollution, cost.
Additionally, the above-mentioned nitrogen rejection facility of the present invention improves the mixed effect of sewage and sludge by hydraulic mixing, in device
Portion does not have any plant equipment, greatly reduces equipment maintenance workload.Sludge settling property in the present invention is fine, and three
Phase separator can be by sewage and sludge, nitrogen separation, and without the need for extra mud-water separation facility, floor space is little, operation energy consumption
It is low.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention's shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the denitrification denitrogenation schematic device according to an embodiment of the present invention.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, water entering section；101st, water inlet；102nd, flow back import；103rd, spoil disposal drain；110th, water distribution orifice plate；120th, bottom
Seat；20th, reacting part；30th, three phase separation portion；301st, through hole；310th, blind plate；320th, gas skirt；330th, discharge；302nd, purified water
Outlet；303rd, bypass outlet.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Below
It is illustrative to the description only actually of at least one exemplary embodiment, never conduct is to the present invention and its application or makes
Any restriction.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the part for otherwise illustrating in these embodiments and positioned opposite, the digital table of step
Do not limit the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for the ease of description, each portion shown in accompanying drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered to authorize explanation
A part for book.In all examples shown here and discussion, any occurrence should be construed as merely exemplary, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms is represented in following accompanying drawing with letter, therefore, once be defined in a certain Xiang Yi accompanying drawing, then subsequent attached
It need not be further discussed in figure.
In describing the invention, it is to be understood that the noun of locality as " forward and backward, upper and lower, left and right ", " it is laterally, vertical,
Vertically, the orientation or position relationship indicated by level " and " top, bottom " etc. is normally based on orientation shown in the drawings or position and closes
System, is for only for ease of the description present invention and simplifies description, and in the case where contrary explanation is not made, these nouns of locality are not indicated that
There must be specific orientation or with specific azimuth configuration and operation with the device or element of hint indication, therefore can not manage
Solve as limiting the scope of the invention；The noun of locality " inside and outside " is referred to relative to inside and outside each part profile of itself.
For the ease of description, space relative terms can be used here, such as " ... on ", " ... top ",
" in ... upper surface ", " above " etc., for describing such as a device or feature shown in the figure and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
To be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
As described by background section, removed in sewage using biological heterotrophic denitrification technique in prior art
During nitrate nitrogen, there is a problem of processing inadequate depth, high cost and secondary pollution.
In order to solve this problem, the invention provides a kind of denitrification denitrogenation device, as shown in figure 1, it is included successively
Water entering section 10, reacting part 20 and the three phase separation portion 30 being arranged in series, water entering section 10 is provided with and is supplied for sewage and solid-state electronic
The water inlet 101 that body is entered, is provided with autotrophic denitrification flora in reacting part 20.
The above-mentioned denitrification denitrogenation device that the present invention is provided, including the water entering section 10, the and of reacting part 20 that are sequentially connected in series setting
Three phase separation portion 30, water entering section 10 is provided with the water inlet 101 entered for sewage and solid-state electronic donor, adds in reacting part 20
Added with autotrophic denitrification flora (being wherein enriched thiobacillus denitrificans).During concrete denitrogenation processing, add solid in sewage
State electron donor, and sewage is introduced into the reacting part 20 containing autotrophic denitrification flora, autotrophic denitrification reaction can be carried out.
In the course of reaction, the nitrate nitrogen in sewage can be converted into nitrogen discharge.Containing the mixing of nitrogen, sludge and purified water after reaction
Thing completes to separate in three phase separation portion 30, forms purified water and nitrogen is discharged.
Compared with acetic acid, ethanol etc., solid-state electronic donor low price and sulphur component content are high, autotrophic denitrification cost compared with
It is low.Meanwhile, autotrophic denitrification is that, without the anxiety for producing remaining organic matter, sludge yield is relatively low using inorganic matter as electron donor.Institute
So that autotrophic denitrification technique provides a kind of means of low energy consumption for the not enough sewage deep denitrogenation of carbon source.Inside nitrogen rejection facility
Without equipment, without the need for extra mud-water separation facility, floor space is little.In a word, process dirty using the above-mentioned nitrogen rejection facility of the present invention
Water, the treatment effeciency of nitrate nitrogen is high, and relatively low without secondary pollution, cost.
Additionally, the above-mentioned nitrogen rejection facility of the present invention improves the mixed effect of sewage and sludge by hydraulic mixing, in device
Portion does not have any plant equipment, greatly reduces equipment maintenance workload.Sludge settling property in the present invention is fine, and three
Phase separator can be by sewage and sludge, nitrogen separation, and without the need for extra mud-water separation facility, operation energy consumption is low.
The flora form of above-mentioned autotrophic denitrification flora can be free state, or zoogloea, specifically there may be
In activated sludge.Above-mentioned solid-state electronic donor is preferably sulphur.
In a kind of preferred embodiment, above-mentioned denitrification denitrogenation device, water entering section 10, reacting part 20 and three phase separation portion
30 are arranged in order from the bottom to top.Water entering section 10, reacting part 20 and three phase separation portion 30 are arranged in order from the bottom to top, are entered in sewage
After entering water entering section 10, can enter in reacting part 20 from bottom to top, contacting with autotrophic denitrification flora carries out autotrophic denitrification reaction.
Autotrophic denitrification flora is driven to rise by the rapid increase intake, so that autotrophic denitrification flora to the greatest extent may be used into suspended state
It is fully contacted can solid-state electronic donor, sewage and flora such that it is able to improve reaction efficiency, and then improve nitric efficiency.
Specifically as long as the setting of water entering section 10, reacting part 20 and three phase separation portion 30 is according to setting successively from the bottom to top
Put, you can improve nitric efficiency.In a kind of typical embodiment, as shown in figure 1, above-mentioned denitrification denitrogenation device is including hollow
Cylinder, water entering section 10 is located at the lower end of hollow cylinder, and three phase separation portion 30 is located at the upper end of hollow cylinder, entering in hollow cylinder
Reacting part 20 is formed between water portion 10 and three phase separation portion 30, and the ratio of height to diameter of reacting part 20 is not less than 4:1.So, open tubular column
The upper and lower ends of body are respectively three phase separation portion 30 and water entering section 10, and mid portion is reacting part 20.Under the setting, three regions
The entirety of column is defined, there is higher continuity in sewage disposal process, disposal ability is relatively higher.It is preferred that reacting part
20 ratio of height to diameter is not less than 4:1, denitrogenation can be made more abundant.
In a kind of preferred embodiment, above-mentioned denitrification denitrogenation device, three phase separation portion 30 includes gas skirt 320, collection
Tracheae 330 and top settling zone, gas skirt 320 is located at the top of reacting part 20, and one end and the gas skirt 320 of discharge 330 connect
Connect, the other end extends to outside, the bottom of top settling zone is connected with the top of reacting part 20, gas skirt 320 is heavy positioned at top
In the area of shallow lake.The nitrogen that sewage after the process of reacting part 20 is produced with autotrophic denitrification flora, denitrification enters three phase separation portion 30
Afterwards, nitrogen can be discharged into discharge 330 after being collected using gas skirt 320, and gas skirt 320 can also improve gas
Removal efficiency, so as to further improve sewage treating efficiency.Using top settling zone, three phase separation portion can will be entered after denitrogenation
30 sludge settling gets off, and returns reacting part 20.The radical length on the top of preferred top settling zone and the radial direction of reacting part 20
Length ratio is not less than 3:1 this more rapidity sludge settling can be got off, so as to further improve separative efficiency.Illustrate
Bright, hollow cylinder is hollow cylinder, and top settling zone is conical area, so, the upper end diameter and hollow cylinder of cone
The diameter ratio of body is not less than 3:1.
In a kind of preferred embodiment, above-mentioned denitrification denitrogenation device, three phase separation portion 30 also includes blind plate 310, blind
Plate 310 is arranged on one end away from reacting part 20 of hollow cylinder, and through hole 301 is provided with blind plate 310, and discharge 330 is passed through
Through hole 301 extends to outside.After so arranging, the sewage after the process of reacting part 20 is produced with autotrophic denitrification flora, denitrification
Nitrogen separate at three phase separation portion 30, nitrogen can be discharged from discharge 330, and purified water is then in the obstruction institute of blind plate 310
From sidepiece overflow with, so as to convenient for the collection of purified water.
In a kind of preferred embodiment, above-mentioned denitrification denitrogenation device, three phase separation portion 30 is additionally provided with purified water and goes out
Mouth 302, treated water outlet 302 is located at the side in three phase separation portion 30.So, the sewage after reacting part 20 is processed and the anti-nitre of autotrophy
Change flora, the nitrogen of denitrification generation to enter behind three phase separation portion 30, purified water directly goes out overflow and goes out from treated water outlet 302
Come, sludge then settles back reacting part 20, so as to without the need for other power and installations and facilities, voluntarily complete three phase separation.This being capable of pole
The earth saving energy consumption, further reduces the processing cost of sewage.
In a kind of preferred embodiment, above-mentioned denitrification denitrogenation device, three phase separation portion 30 is additionally provided with bypass outlet
303, bypass outlet 303 is arranged on the opposite side relative to treated water outlet 302 in three phase separation portion 30；Water entering section 10 also sets up
There is backflow import 102, backflow import 102 is connected with bypass outlet 303.It is arranged such, when sludge settling property good, Sludge Bed excessively
When layer is too low, can will go out water circulation, with water inlet reacting part is entered jointly, improve the upflow velocity of water in reacting part, so as to
Without the need for making the contact between medium more abundant under conditions of stirring, and then make reaction more abundant.In specific operating process
In, water outlet recycle ratio can change between 0～200%, be adjusted according to sludge state.
In a preferred embodiment, water entering section 10 includes water inlet pipe and return duct, and water inlet pipe and return duct are all provided with
Put in hollow cylinder, water inlet pipe has the delivery port of water inlet 101 and first, there is return duct backflow import 102 and second to go out
The mouth of a river.So arrange, the simple structure of water entering section 10, water inlet is smooth.
In a preferred embodiment, water entering section 10 also has water distribution orifice plate 110, and water distribution orifice plate 110 is arranged on hollow
In cylinder, and between water inlet pipe and reacting part 20., further raising more uniform into water can be made using water distribution orifice plate 110
Reaction efficiency.
In a preferred embodiment, water entering section 10 also includes spoil disposal drain 103, and spoil disposal drain 103 is arranged
On hollow cylinder.In actual mechanical process, after operation a period of time, the sludge that spoil disposal drain 103 will be inactivated can be passed through
Discharge.
Preferably, denitrification denitrogenation device also includes：Base 120, base 120 is arranged on the bottom of hollow cylinder.Arrange
Base 120 can make device more stable.
According to a further aspect in the invention, there is provided a kind of denitrification method, it is comprised the following steps：By solid-state electricity
Sub- donor is added in the sewage containing nitrate nitrogen, carries out autotrophy into the reacting part for being added with autotrophic denitrification flora from water entering section anti-
Nitration reaction, obtains mixture；Mixture is carried out into three phase separation, water is purified.
The said method that the present invention is provided, using the mode for adding solid-state electronic donor in phase sewage so as to anti-in autotrophy
There is autotrophic denitrification reaction in the presence of nitrifying bacteria community, the nitrate nitrogen in sewage is converted into nitrogen, complete to sewage
Denitrogenation processing.Compared with acetic acid, ethanol etc., solid-state electronic donor low price and sulphur component content are high, autotrophic denitrification cost
It is relatively low.Meanwhile, autotrophic denitrification is that, without the anxiety for producing remaining organic matter, sludge yield is relatively low using inorganic matter as electron donor.
So, autotrophic denitrification technique provides a kind of means of low energy consumption for the not enough sewage deep denitrogenation of carbon source.In a word, using this
The above-mentioned nitrogen rejection facility of invention processes sewage, and the treatment effeciency of nitrate nitrogen is high and relatively low without secondary pollution, cost.
Specific handling process can be adjusted according to factors such as the nitrate nitrogen contents of sewage.In a kind of preferred enforcement
In mode, in the sewage containing nitrate nitrogen, the concentration of nitrate nitrogen is 10～100mg/L, the hydraulic detention time of reacting part is 1～
3h.Under the process conditions, the nitric efficiency of sewage is higher.The sewage of the Jing process, the concentration of nitrate nitrogen can be down to 3mg/L with
Under, pH is about 6.5～7.2.
In a word, denitrogenation processing is carried out to sewage using the above-mentioned device of the present invention and technique, can reach following technique effect：
1st, sulphur powder is only added, processing cost is low；
2nd, sludge yield is low, environmental friendliness；
3rd, can process by the waste water of azotate pollution, when being particularly suited for organic carbon source deficiency in sewage, without the need for adding
Organic matter, without Organic Pollution problem；
4th, reacting part main body is free or the zoogleic autotrophic denitrification flora of formation, and without the need for other materials carrier is done,
The contact rate of microorganism and sewage can be improved, reaction rate is improved, can effectively shorten hydraulic detention time；
5th, without the need for mechanical stirring device, without underwater installation, plant maintenance workload is reduced during operation；
6th, without the need for second pond or other mud-water separation facility, equipment and sludge refluxing apparatus, floor space is little, operation maintenance
Simply.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (15)
1. a kind of efficient denitrification denitrogenation device, it is characterised in that including the water entering section (10), the reacting part that are sequentially connected in series setting
(20) and three phase separation portion (30), the water entering section (10) is provided with the water inlet entered for sewage and solid-state electronic donor
(101), it is provided with autotrophic denitrification flora in the reacting part (20).
2. denitrification denitrogenation device according to claim 1, it is characterised in that the water entering section (10), the reacting part
(20) it is arranged in order from the bottom to top with the three phase separation portion (30).
3. denitrification denitrogenation device according to claim 2, it is characterised in that the denitrification denitrogenation device includes hollow
Cylinder, positioned at the lower end of the hollow cylinder, the three phase separation portion (30) is positioned at the hollow cylinder for the water entering section (10)
Upper end, form the reacting part between the water entering section (10) and the three phase separation portion (30) in the hollow cylinder
(20)。
4. denitrification denitrogenation device according to claim 3, it is characterised in that the ratio of height to diameter of the reacting part (20) is not little
In 4:1.
5. denitrification denitrogenation device according to claim 3, it is characterised in that the three phase separation portion (30) includes：
Gas skirt (320), top of the gas skirt (320) positioned at the reacting part (20)；
Discharge (330), one end of the discharge (330) is connected with the gas skirt (320), and the other end extends to outside；
Top settling zone, the bottom of the top settling zone is connected with the top of the reacting part (20), the gas skirt (320)
In the top settling zone.
6. denitrification denitrogenation device according to claim 5, it is characterised in that the radial direction on the top of the top settling zone
Length is not less than 3 with the ratio of the radical length of the reacting part (20):1.
7. denitrification denitrogenation device according to claim 5, it is characterised in that the three phase separation portion (30) also includes blind
Plate (310), the blind plate (310) is arranged on one end away from the reacting part (20) of the hollow cylinder, the blind plate
(310) through hole (301) is provided with, the discharge (330) extends to outside through the through hole (301).
8. the denitrification denitrogenation device according to any one of claim 5 to 7, it is characterised in that the three phase separation portion
(30) treated water outlet (302) is additionally provided with, the treated water outlet (302) is positioned at the side of the three phase separation portion (30).
9. denitrification denitrogenation device according to claim 8, it is characterised in that the three phase separation portion (30) is additionally provided with
Bypass outlet (303), the bypass outlet (303) be arranged on the three phase separation portion (30) relative to the treated water outlet
(302) opposite side；The water entering section (10) is additionally provided with backflow import (102), backflow import (102) and the backflow
Outlet (303) is connected.
10. denitrification denitrogenation device according to claim 9, it is characterised in that the water entering section (10) is including water inlet pipe
And return duct, the water inlet pipe and the return duct be arranged in the hollow cylinder, and the water inlet pipe has the water inlet
Mouth (101) and the first delivery port, the return duct has backflow import (102) and the second delivery port.
11. denitrification denitrogenation devices according to claim 10, it is characterised in that the water entering section (10) also has water distributing pore
Plate (110), the water distribution orifice plate (110) is arranged in the hollow cylinder, and positioned at the water inlet pipe and the reacting part
(20) between.
12. denitrification denitrogenation devices according to claim 10, it is characterised in that the water entering section (10) also includes spoil disposal
Drain (103), the spoil disposal drain (103) is arranged on the hollow cylinder.
13. denitrification denitrogenation devices according to claim 10, it is characterised in that the denitrification denitrogenation device is also wrapped
Include：
Base (120), the base (120) is arranged on the bottom of the hollow cylinder.
14. a kind of denitrification methods, it is characterised in that comprise the following steps：
Solid-state electronic donor is added in the sewage containing nitrate nitrogen, the reaction for being added with autotrophic denitrification flora is entered from water entering section
Portion carries out autotrophic denitrification reaction, obtains mixture；
The mixture is carried out into three phase separation, water is purified.
15. methods according to claim 14, it is characterised in that in the sewage containing nitrate nitrogen, 10～100mg/L,
The hydraulic detention time of the reacting part is 1～3h.
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| CN201611248653.7A CN106630134A (en) | 2016-12-29 | 2016-12-29 | High-efficiency denitrification nitrogen removal device and method |
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| CN108558028A (en) * | 2018-05-14 | 2018-09-21 | 辽源市铭远环保工程有限公司 | A kind of domestic sewage denitrifying system and domestic sewage denitrifying method |
| CN110526389A (en) * | 2019-08-30 | 2019-12-03 | 江苏南大环保科技有限公司 | A kind of biological denitrificaion three-phase separator vessel and biological denitrification reactor |
| CN110697888A (en) * | 2019-10-12 | 2020-01-17 | 北京恩菲环保股份有限公司 | Sulfur preparation and method for removing nitrate nitrogen in water |
| CN112919732A (en) * | 2021-01-26 | 2021-06-08 | 中电环保股份有限公司 | UAD biological filter tower system based on sulfur autotrophy and denitrification method |
| CN112939336A (en) * | 2021-01-26 | 2021-06-11 | 中电环保股份有限公司 | Upflow denitrification device and method based on sulfur autotrophy |
| CN113044982A (en) * | 2021-05-08 | 2021-06-29 | 北控水务(中国)投资有限公司 | Sulfur autotrophic denitrification reactor and sewage treatment system |
| CN114044570A (en) * | 2021-10-28 | 2022-02-15 | 中信环境技术（广州）有限公司 | Denitrification device and method for denitrifying wastewater with low carbon-nitrogen ratio |
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| CN112939336A (en) * | 2021-01-26 | 2021-06-11 | 中电环保股份有限公司 | Upflow denitrification device and method based on sulfur autotrophy |
| CN113044982A (en) * | 2021-05-08 | 2021-06-29 | 北控水务(中国)投资有限公司 | Sulfur autotrophic denitrification reactor and sewage treatment system |
| CN114044570A (en) * | 2021-10-28 | 2022-02-15 | 中信环境技术（广州）有限公司 | Denitrification device and method for denitrifying wastewater with low carbon-nitrogen ratio |
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