CN104402139A - Processing method of oil-containing sewage - Google Patents
Processing method of oil-containing sewage Download PDFInfo
- Publication number
- CN104402139A CN104402139A CN201410629949.8A CN201410629949A CN104402139A CN 104402139 A CN104402139 A CN 104402139A CN 201410629949 A CN201410629949 A CN 201410629949A CN 104402139 A CN104402139 A CN 104402139A
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- water
- oil
- sewage
- tank
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a processing method of oil-containing sewage. Sewage is elevated from a sewage storage tank and a regulating tank and then is fed into a high efficient deoiling tank. The deoiled sewage is discharged into a scum precipitation tank through a scum pipe. The pollutant is pressed into sludge cakes by a sludge dehydrating machine, and the sludge cakes are transported out. Then the processed water goes through an overflow dam and a water outlet pipe and goes into a second intermediate water tank. The second intermediate water tank collects the effluent from the primary air float machine, the effluent then is lifted to a secondary air float machine to carry out processing by an air float secondary lifting pump; after two-grade air floating, if the water quality has reach the related standards, the water can be directly discharged into a pool through a third intermediate water tank, the discharged water is monitor in real time, and if the water quality does not meet the related requirements even after two-grade air floating, a walnut shell filter should be arranged between the third intermediate water tank and the pool. The sewage processing capacity can reach 250 m<3>/d, the content of main sewage petroleum pollutants is not more than 5000 mg/L, the COD Cr content is not more than 3000 mg/L, and the pollutants in the oil-containing sewage can be basically eliminated.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, particularly relate to a kind of oil-contaminated water processing method.
Background technology
A lot of waste water can be produced in industrial production, comprise sanitary sewage, ground flushing waste water, cleaning of evaporator waste water and tank field early-stage rainwater etc.The pollution substance contained in these sewage has petroleum-type, potassium bichromate (COD
cr) and suspended substance etc.
If these oil-water mixtures directly discharge, great destruction will be caused to environment.
Oil generally exists with three kinds of forms in water, is respectively: float and oil---refer to that elaioleucite particle diameter is greater than 50um, the oil that static for some time can float voluntarily; Dispersed oil---refer to elaioleucite particle diameter less be 10 ~ 50um, be scattered in water, leave standstill the oil that can float through the long period; Oil in water emulsion---refer to that elaioleucite particle diameter is less of below 10um, leave standstill the oil that can not float, be generally because using tensio-active agent or mechanical effect to make oily emulsification institute form stable dispersion system, the oil of oily(waste)water mainly to exist with the form of dispersed oil to float to oil, and sewage is milkiness shape.
Summary of the invention
The object of the present invention is to provide a kind of oil-contaminated water processing method, the method mainly oils and feature that dispersed oil form exists with floating for the oil of oily(waste)water, forms the process system with materializing strategy, the pollution in oily(waste)water all can be removed.
The object of the invention is to be achieved through the following technical solutions:
A kind of oil-contaminated water processing method, described method comprises following treating processes:
Sewage enters efficient degreasing tank after promoting in sewage storage pond and equalizing tank, and after leaving standstill, by the screening effect of gravity, oil slick and dispersed oil float to the water surface, then with Oil scraper and collection tube, the oil slick on top layer are isolated water body; The oil be separated, recycles after Cemented filling to oil reservoir; Water after the process of efficient degreasing tank, through the first intermediate pool, is then promoted to one-level air floatation machine by one-level lift pump and carrys out further oil removing; At this moment in one-level air floatation machine, coagulant polymeric aluminium chloride (PAC) is added, make remaining dispersed oil in water, oil in water emulsion and and other pollutents form small flco, then add non-ionic type polymeric flocculant (PAM), the small flco that the coagulation stage is formed is condensed into big flocculating body; After dissolved air floatation water discharges in sewage, form the oil in water emulsion in small bubbles adhesion sewage or suspended substance, form the three-phase system of water, gas and floss, hydrophobic floss and bubble incorporation emerge, then with scraper plate, scum silica frost platoon is entered scum silica frost storage pool, enter scum silica frost settling bowl through scum silica frost pipe, then utilize sludge dewatering equipment pollutent to be formed mud cake outward transport, the water after process enters the second intermediate pool by overflow weir and rising pipe;
Second intermediate pool collects the water outlet of one-level air floatation machine, is promoted to secondary air-floatation machine processes by air supporting two-stage hoisting pump; Simultaneously to secondary air-floatation machine dosing coagulant PAC, make dispersed oil a small amount of in water, oil in water emulsion and and other pollutents form small flco, then add flocculation agent PAM, the small flco that the coagulation stage is formed is condensed into big flocculating body, and improve alumen ustum intensity, improve by two-stage air supporting effect of deoiling;
After two-stage air supporting, be directly discharged in outlet sump by the 3rd intermediate pool during water quality reaching standard; Real-Time Monitoring is carried out to water outlet, if water quality still exceeds standard after two-stage air supporting, then set up walnut shell filter the 3rd between intermediate pool and outlet sump, walnut shell filter filters and utilizes filtrate the interception function of oil and cohesion to be removed further to oil in sewage, makes standard water discharge.
Described a kind of oil-contaminated water processing method, described in it and coagulating agent, flocculation agent addition, depending on soil level.
Advantage of the present invention and effect are:
The present invention is directed to the oil of oily(waste)water mainly with the floating feature existed with the form of dispersed oil that oils, take materializing strategy, sewage treatment capacity reaches 250m3/d, main Wastewater Pollutant petroleum-type≤5000mg/L, COD
cr≤ 3000mg/L.Pollution in oily(waste)water all can be removed.
Accompanying drawing explanation
Fig. 1 is present system compositional block diagram.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the invention will be further described.
As shown in Figure 1, oil reservoir of the present invention is connected with efficient degreasing tank, scum silica frost storage pool, scum silica frost subsider and sludge dewatering equipment, one-level air floatation machine are by scum silica frost storage pool, and be connected with sludge dewatering equipment through scum silica frost subsider, walnut shell filter and outlet sump, it is the 3rd between intermediate pool and outlet sump.Concrete annexation is: device comprises sewage storage pond, equalizing tank, efficient degreasing tank, grease removal tank, the first intermediate pool, one-level air floatation machine, scum silica frost storage pool, scum silica frost subsider, sludge dewatering equipment, the second intermediate pool, secondary air-floatation machine, the 3rd intermediate pool, walnut shell filter, outlet sump; Aforesaid device, facility are connected as follows successively: sewage storage pond is connected with equalizing tank, and is connected with efficient degreasing tank, the first intermediate pool, one-level air floatation machine; Efficient degreasing tank is also connected with oil reservoir, and one-level air floatation machine is also connected with scum silica frost storage pool, scum silica frost subsider, sludge dewatering equipment; Second intermediate pool is connected with secondary air-floatation machine, the 3rd intermediate pool, walnut shell filter, outlet sump.
Embodiment:
Shown in Fig. 1, sewage enters efficient degreasing tank after promoting in sewage storage pond and equalizing tank, and after leaving standstill, by the screening effect of gravity, oil slick and dispersed oil float to the water surface, then with Oil scraper and collection tube, the oil slick on top layer are isolated water body.The oil be separated, recycles after Cemented filling to oil reservoir.Water after the process of efficient degreasing tank, through the first intermediate pool, is then promoted to one-level air floatation machine by one-level lift pump and carrys out further oil removing.
At this moment in one-level air floatation machine, coagulant polymeric aluminium chloride (PAC) is added, make remaining dispersed oil in water, oil in water emulsion and and other pollutents form small flco, then non-ionic type polymeric flocculant (PAM) is added, the small flco that the coagulation stage is formed is condensed into big flocculating body, and improve alumen ustum intensity, improve pneumatically supported removal effect.The amount that its coagulating agent, flocculation agent add is depending on soil level.
After dissolved air floatation water discharges in sewage, form the oil in water emulsion in small bubbles adhesion sewage or suspended substance, form the three-phase system of water, gas and floss, hydrophobic floss and bubble incorporation emerge, then with scraper plate, scum silica frost platoon is entered scum silica frost storage pool, enter scum silica frost settling bowl through scum silica frost pipe, then utilize sludge dewatering equipment pollutent to be formed mud cake outward transport, the water after process enters the second intermediate pool by overflow weir and rising pipe.
Second intermediate pool collects the water outlet of one-level air floatation machine, is promoted to secondary air-floatation machine processes by air supporting two-stage hoisting pump.Simultaneously to secondary air-floatation machine dosing coagulant PAC, make dispersed oil a small amount of in water, oil in water emulsion and and other pollutents form small flco, then add flocculation agent PAM, the small flco that the coagulation stage is formed is condensed into big flocculating body, and improve alumen ustum intensity, improve removal effect by two-stage air supporting.
After two-stage air supporting, directly can be discharged in outlet sump by the 3rd intermediate pool during water quality reaching standard; Real-Time Monitoring is carried out to water outlet, if water quality still exceeds standard after two-stage air supporting, then set up walnut shell filter the 3rd between intermediate pool and outlet sump, it is utilize filtrate the interception function of oil and cohesion to be removed further to oil in sewage, to guarantee the qualified discharge of water outlet that walnut shell filter filters.
Claims (2)
1. an oil-contaminated water processing method, is characterized in that, described method comprises following treating processes:
Sewage enters efficient degreasing tank after promoting in sewage storage pond and equalizing tank, and after leaving standstill, by the screening effect of gravity, oil slick and dispersed oil float to the water surface, then with Oil scraper and collection tube, the oil slick on top layer are isolated water body; The oil be separated, recycles after Cemented filling to oil reservoir; Water after the process of efficient degreasing tank, through the first intermediate pool, is then promoted to one-level air floatation machine by one-level lift pump and carrys out further oil removing; At this moment in one-level air floatation machine, coagulant polymeric aluminium chloride (PAC) is added, make remaining dispersed oil in water, oil in water emulsion and and other pollutents form small flco, then add non-ionic type polymeric flocculant (PAM), the small flco that the coagulation stage is formed is condensed into big flocculating body; After dissolved air floatation water discharges in sewage, form the oil in water emulsion in small bubbles adhesion sewage or suspended substance, form the three-phase system of water, gas and floss, hydrophobic floss and bubble incorporation emerge, then with scraper plate, scum silica frost platoon is entered scum silica frost storage pool, enter scum silica frost settling bowl through scum silica frost pipe, then utilize sludge dewatering equipment pollutent to be formed mud cake outward transport, the water after process enters the second intermediate pool by overflow weir and rising pipe;
Second intermediate pool collects the water outlet of one-level air floatation machine, is promoted to secondary air-floatation machine processes by air supporting two-stage hoisting pump; Simultaneously to secondary air-floatation machine dosing coagulant PAC, make dispersed oil a small amount of in water, oil in water emulsion and and other pollutents form small flco, then add flocculation agent PAM, the small flco that the coagulation stage is formed is condensed into big flocculating body, and improve alumen ustum intensity, improve by two-stage air supporting effect of deoiling;
After two-stage air supporting, be directly discharged in outlet sump by the 3rd intermediate pool during water quality reaching standard; Real-Time Monitoring is carried out to water outlet, if water quality still exceeds standard after two-stage air supporting, then set up walnut shell filter the 3rd between intermediate pool and outlet sump, walnut shell filter filters and utilizes filtrate the interception function of oil and cohesion to be removed further to oil in sewage, makes standard water discharge.
2. a kind of oil-contaminated water processing method according to claim 1, is characterized in that, the described and addition of coagulating agent, flocculation agent, depending on soil level.
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|---|---|---|---|
| CN201410629949.8A CN104402139A (en) | 2014-11-11 | 2014-11-11 | Processing method of oil-containing sewage |
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|---|---|---|---|
| CN201410629949.8A CN104402139A (en) | 2014-11-11 | 2014-11-11 | Processing method of oil-containing sewage |
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| CN104402139A true CN104402139A (en) | 2015-03-11 |
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| CN201410629949.8A Pending CN104402139A (en) | 2014-11-11 | 2014-11-11 | Processing method of oil-containing sewage |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909420A (en) * | 2015-06-03 | 2015-09-16 | 宜兴市荣盛达环保有限公司 | Carbon dioxide gas floatation treatment system for coal chemical industrial wastewater |
| CN106116054A (en) * | 2016-08-17 | 2016-11-16 | 谭嘉伟 | Track traffic integrated wastewater processes and reclaiming system |
| CN106242189A (en) * | 2016-08-30 | 2016-12-21 | 安徽银河皮革有限公司 | A kind of process hides Water Sproading Biochemical method technique |
| CN106830442A (en) * | 2017-03-27 | 2017-06-13 | 北京燕山翔宇环保工程技术有限公司 | Oil-containing sewage treatment system and method |
| CN106915841A (en) * | 2015-12-28 | 2017-07-04 | 沈阳中科环境工程科技开发有限公司 | A kind of oil gas field mercury-containing waste water New Process for Treatment |
| CN108236792A (en) * | 2016-12-24 | 2018-07-03 | 刘奎东 | Three-phase cyclone extraction equipment and extracting system |
| CN108941107A (en) * | 2018-08-03 | 2018-12-07 | 山东天力能源股份有限公司 | A kind of tank truck cleaning treatment system and technique |
| CN109293128A (en) * | 2018-08-06 | 2019-02-01 | 浙江筑原生态科技有限公司 | A kind of Sewage from Ships processing system |
| CN109365512A (en) * | 2018-10-23 | 2019-02-22 | 河北工业大学 | A kind of technique and device of mobile quickly elution oil-polluted soils |
| CN109534429A (en) * | 2018-11-20 | 2019-03-29 | 黎明化工研究设计院有限责任公司 | Sewerage pretreatment method in a kind of process for prepairng hydrogen peroxide by anthraquinone |
| CN110054329A (en) * | 2019-04-16 | 2019-07-26 | 陕西睿兴华环境科技有限公司 | A kind of small-sized central treating station or water-injection station produce sewage treatment skid method |
| CN113860534A (en) * | 2021-10-23 | 2021-12-31 | 江苏核工业格林水处理有限责任公司 | System and method for treating non-radioactive oily wastewater |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909420A (en) * | 2015-06-03 | 2015-09-16 | 宜兴市荣盛达环保有限公司 | Carbon dioxide gas floatation treatment system for coal chemical industrial wastewater |
| CN106915841B (en) * | 2015-12-28 | 2020-07-24 | 沈阳中科环境工程科技开发有限公司 | Novel process for treating mercury-containing wastewater of oil and gas field |
| CN106915841A (en) * | 2015-12-28 | 2017-07-04 | 沈阳中科环境工程科技开发有限公司 | A kind of oil gas field mercury-containing waste water New Process for Treatment |
| CN106116054A (en) * | 2016-08-17 | 2016-11-16 | 谭嘉伟 | Track traffic integrated wastewater processes and reclaiming system |
| CN106242189A (en) * | 2016-08-30 | 2016-12-21 | 安徽银河皮革有限公司 | A kind of process hides Water Sproading Biochemical method technique |
| CN108236792A (en) * | 2016-12-24 | 2018-07-03 | 刘奎东 | Three-phase cyclone extraction equipment and extracting system |
| CN108236792B (en) * | 2016-12-24 | 2020-07-24 | 新疆神邦环境工程有限公司 | Three-phase rotational flow extraction device and extraction system |
| CN106830442A (en) * | 2017-03-27 | 2017-06-13 | 北京燕山翔宇环保工程技术有限公司 | Oil-containing sewage treatment system and method |
| CN108941107A (en) * | 2018-08-03 | 2018-12-07 | 山东天力能源股份有限公司 | A kind of tank truck cleaning treatment system and technique |
| CN109293128A (en) * | 2018-08-06 | 2019-02-01 | 浙江筑原生态科技有限公司 | A kind of Sewage from Ships processing system |
| CN109365512A (en) * | 2018-10-23 | 2019-02-22 | 河北工业大学 | A kind of technique and device of mobile quickly elution oil-polluted soils |
| CN109365512B (en) * | 2018-10-23 | 2023-06-23 | 河北工业大学 | Method for mobile rapid elution of petroleum-polluted soil |
| CN109534429A (en) * | 2018-11-20 | 2019-03-29 | 黎明化工研究设计院有限责任公司 | Sewerage pretreatment method in a kind of process for prepairng hydrogen peroxide by anthraquinone |
| CN110054329A (en) * | 2019-04-16 | 2019-07-26 | 陕西睿兴华环境科技有限公司 | A kind of small-sized central treating station or water-injection station produce sewage treatment skid method |
| CN113860534A (en) * | 2021-10-23 | 2021-12-31 | 江苏核工业格林水处理有限责任公司 | System and method for treating non-radioactive oily wastewater |
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Application publication date: 20150311 |