CN101182090B - Apparatus for treating oil-containing alkaline waste water - Google Patents
Apparatus for treating oil-containing alkaline waste water Download PDFInfo
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- CN101182090B CN101182090B CN2007101580822A CN200710158082A CN101182090B CN 101182090 B CN101182090 B CN 101182090B CN 2007101580822 A CN2007101580822 A CN 2007101580822A CN 200710158082 A CN200710158082 A CN 200710158082A CN 101182090 B CN101182090 B CN 101182090B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to an oil-containing alkaline wastewater treatment process and equipment. The process uses oil-containing alkaline wastewater and industrial acid water as raw material for the neutralization reaction. Qualified water after the neutralization reaction is pre-treated through an air floatation method, enters a biochemical reaction pool for the biochemical treatment when being cooled by a cooling tower and aerates in the biochemical pool. Oil in the water is degraded by microorganism. The sludge settlement treatment is implemented through a sediment pool to remove suspendersin the water. The wastewater after the sediment enters a biological filter again for the deep treatment to satisfy the discharging requirements. After the treatment, the index COD of the water is less than or equal to 80mg/l, SS is less than or equal to 10mg/l and oil is less than or equal to 5mg/l. With the biochemical technology used for the oil removal, the consumption of a system is reduced. With the biological filtration used as a deep treatment system, the consumption of ore fillers is reduced. The invention has the advantages of less investment, low operation cost, wide resource, sufficient reaction, good treatment effect, compact structure and convenient management.
Description
Technical field
The present invention relates to a kind of cleaning treatment system of industrial oil-containing alkaline waste water.
Background technology
In the prior art, oil-containing alkaline waste water is squeezed into neutralization tank from equalizing tank, squeezes into sour water in neutralization tank, and oil removal by air bubbling is used in the neutralization back, enters oil removal filter then and carries out degree of depth oil removing.
Treatment process of the prior art is that pure physico-chemical process is handled, and water outlet oleaginousness height can not reach the requirement of advanced treatment for a long time.Described energy consumption is big, and itself is not energy-conservation, and the mineral filtrate that is consumed is many, produces secondary pollution, does not meet environmental requirement, is not enough to realization system the long-term stability full-automatic and system of assurance and moves.
Summary of the invention
The treatment system that the purpose of this invention is to provide a kind of oil-containing alkaline waste water, this system is that raw material neutralizes with industrial oil-containing alkaline waste water and industrial sour water, carry out pre-treatment with the air supporting method, enter biochemistry pool through the cooled water of cooling tower, aeration in biochemistry pool is with oil content in the microbiological deterioration water, again through the biological filter advanced treatment, reduced the discharging of water pollutant, made water outlet satisfy emission request.
For achieving the above object, the present invention is achieved through the following technical solutions:
The treatment process of oil-containing alkaline waste water, with oil-containing alkaline waste water and industrial sour water is that raw material carries out neutralization reaction, after qualified water is handled by coagulation basin after the neutralization reaction, adopt the air supporting method to carry out pre-treatment again, pretreated water enters biochemical reaction tank and carries out biochemical treatment after the cooling tower cooling, biochemical reaction tank inner control temperature is 20-35 ℃, pH value 6-9, aeration in biochemistry pool is with oil content in the microbiological deterioration water, carrying out sludge settling through settling tank again handles except that anhydrating middle suspended substance, the waste water of post precipitation enters the biological filter again, carries out advanced treatment, satisfies emission request, after the processing, the index COD of water≤80mg/l; SS≤10mg/l; Oil≤5mg/l.Described air supporting method is a pressure air-dissolving air-float, the gas of loosing is floating, jet air float or cavitation air flotation; The promising contact oxidation method of described biochemical processing method, activated sludge process, SBR method or CASS method.
The treatment system of oil-containing alkaline waste water is made up of oil-containing alkaline waste water neutralizing treatment system, air supporting pretreatment system, cooling system, biochemical treatment system, advanced treatment system, sludge settling system, sludge dewatering treatment system and chemical medicine system;
Oil-containing alkaline waste water neutralizing treatment system comprises alkali equalizing tank, one-level neutralization tank, secondary neutralization tank and coagulation basin, and the alkali equalizing tank is connected with the one-level neutralization tank by pipeline, is provided with lift pump on this pipeline; In one-level neutralization tank and secondary neutralization tank, aeration and stirring system are set; Also has sour dosing system with the one-level neutralization tank links to each other with the secondary neutralization tank; The secondary neutralization tank connects coagulation basin;
Coagulation basin connects PAC medicine liquid tank and PAM medicine liquid tank, is provided with volume pump on connecting pipeline; PAC medicine liquid tank and PAM medicine liquid tank, HCl acid jar and NaOH medicine liquid tank constitute chemical medicine system; HCl acid jar connection neutralization tank, secondary neutralization tank and a secondary PH equalizing tank; The NaOH medicine liquid tank connects secondary PH equalizing tank; Secondary PH equalizing tank inlet end connects air flotation pool, warm cooling tower during exit end connects;
Coagulation basin connects the air supporting pretreatment system, and facing-up oil is scraped the slag dolly on the air flotation pool equipment; The air supporting pretreatment system connects warm cooling tower in the cooling system by secondary PH equalizing tank; The connecting pipeline of secondary PH equalizing tank outlet is provided with lift pump; In warm cooling tower connect the buffering pond by connecting pipeline; The buffering pond connects biological reaction tank by connecting pipeline; Biological reaction tank connects settling tank, and settling tank connects the biological filter, and the biological filter connects the final outflow water pond; Settling tank also is connected mud tank with biological reaction tank, and mud tank connects plate-and-frame filter press, and the connecting pipeline between mud tank and the plate-and-frame filter press is provided with sludge reflux pump.
Biochemical treatment system comprises biological reaction tank, inlet and outlet pipe lines and Aeration fan, and there is biologic packing material inside; Advanced treatment system is the biological filter, comprises inner stuffing and connecting tube; The sludge settling system is made up of mud tank, sludge reflux pump; The sludge dewatering treatment system is made of sludge thickener, mud tank and plate-and-frame filter press.
The present invention's beneficial effect compared with prior art is:
1) can handle oil-containing alkaline waste water and acid waste water simultaneously, can also handle sanitary sewage simultaneously in case of necessity, total system does not have the consumption of ore filler substantially, is enough to satisfy the acidic and alkaline waste water treatment system (station) of any scale.
2) introduce the air supporting pretreatment process, reduced the load of biochemical reaction tank, make water outlet more stable;
3) replaced conventional filter with the biological filter, guaranteed effluent quality, reduced the consumption of filler;
4) add acid and add alkali pump and control by PLC, dosage is drawn through calculated with mathematical model by PLC, guaranteed dosage accurately.
5) k-factor of introducing automatic and adjustable, artificial intelligence can be adjusted according to the fluctuation situation of PH automatically, under the situation of system fluctuation, draw more rational numerical automatically, system intelligent degree height; Also rule of thumb manual intervention.
6) have that investment is little, working cost is low, resource is wide, sufficient reacting, treatment effect are good, the advantage of compact construction, convenient management.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
In the accompanying drawing, M-stirrer YW-liquidometer LW-rotation material level machine HP-turbidimeter P-tensimeter
Embodiment
Below in conjunction with accompanying drawing technology of the present invention is elaborated:
1) alkaline waste water is handled; The oil-containing alkaline waste water of unit discharging flows into the alkali equalizing tank, is provided with PH instrument and liquidometer YW in equalizing tank.
PH adjusts: the water outlet of alkali equalizing tank is squeezed into the one-level neutralization tank with lift pump, in the one-level neutralization tank, react by adding sour water and alkaline waste water, the dosage of acidic and alkaline waste water is subjected to the PH instrument variable frequency control of one-level neutralization tank water outlet, dosage is confirmed through calculated with mathematical model by PLC that respectively the PLC signal derives from the pH value in alkali equalizing tank and the acid jar.
Fine setting: the water outlet of one-level neutralization tank enters the secondary neutralization tank, having other two groups of less spent acid salkali waste pumps of flow to drop into the spent acid salkali waste once more respectively at the secondary neutralization tank finely tunes pH value, secondary gives the PH instrument control of alkali number by a neutralization tank water outlet for the acid amount, through stirring and aeration accelerated reaction process, again by in the one-level and the pH value of water outlet, corrected signal is provided, after calculated with mathematical model, corresponding oil-containing alkaline waste water squeezed into by control soda acid fine setting pump or alkaline waste water enters the secondary neutralization tank, thereby guarantees that the water outlet of secondary neutral is qualified.
When in the alkali equalizing tank during salkali waste liquid level warning (ultralow liquid level), the water outlet of sour equalizing tank (spent acid) is promoted in the one-level and aerator tank with pump, drops into milk of lime in the one-level neutralization tank, and the dosage of milk of lime is subjected to the PH instrument variable frequency control of one-level neutralization tank water outlet; The water outlet of one-level neutralization tank enters the secondary neutralization tank, once more pH value is finely tuned by the less adjusting pump of another group flow in the secondary neutralization tank, and fine setting gives amount by a neutralization tank water outlet PH instrument control (Stroke Control).
2) coagulating treatment; In the secondary and water outlet detect through PH, enter coagulation basin satisfying under the condition of PH=6-9; Qualified water adds flocculation agent and coagulant aids respectively in coagulation basin, mix, flocculate; The add-on of flocculation agent and coagulant aids is controlled by turbidimeter; Described flocculation agent is selected PAC for use; Described coagulant aids is selected PAM for use.
3) oil slick and part emulsification oil handling in the water: oil slick and part oil in water emulsion are handled by air flotation pool in the water, and air-float method has 4 kinds: pressure air-dissolving air-float, the gas of loosing are floating, jet air float or cavitation air flotation.
4) secondary PH regulates and cooling: regulate through PH once more through the waste water that air supporting is handled, make it to satisfy the requirement of bottom operation; Warm cooling tower in entering by lift pump then makes the waste water cooling after the processing, makes it temperature and meets biochemical requirement; Enter the buffering pond then.
5) processing of excess oil and COD in the water: through the content of pretreated waste water oil and COD than higher, in order to remove oil content and COD in the water, pretreated waste water enters biochemical treatment tank, and in the pond aeration, with oil content in the microbiological deterioration water, biochemical reaction tank inner control temperature is 20-35 ℃, pH value 6-9.Biochemical processing method has 4 kinds, contact oxidation method, activated sludge process, SBR method or CASS method.
6) sludge settling is handled; Waste water after pre-treatment, biochemical treatment enters settling tank, removes the middle suspended substance that anhydrates, and the form of settling tank has 3 kinds: reaction settling pond, radial-flow sedimentation tank or inclined-plate clarifying basin substitute.
7) advanced treatment: in order to guarantee effluent quality, the waste water of biochemical treatment, post precipitation enters the biological filter again, and the biological filter has another name called oxidation pond (tower), bio-contact oxidation filter tank.
8) sludge dewatering treatment; Deliver to mud tank from the mud of settling tank with sludge reflux pump and concentrate, be delivered to the plate-and-frame filter press dehydration with sludge reflux pump again, the mud cake after the dehydration leaves sludge bucket in, regularly transports outward with automobile; Cleaner liquid and pressure filter wash-down water then by after collecting, drain into wastewater equalization pond with pump.
The treatment system of oil-containing alkaline waste water is made up of oil-containing alkaline waste water neutralizing treatment system, air supporting pretreatment system, cooling system, biochemical treatment system, advanced treatment system (biological filter), sludge settling system, sludge dewatering treatment system, chemical medicine system;
Oil-containing alkaline waste water neutralizing treatment system comprises alkali equalizing tank, one-level neutralization tank, secondary neutralization tank and coagulation basin, and the alkali equalizing tank is connected with the one-level neutralization tank by pipeline, is provided with lift pump on this pipeline; In one-level neutralization tank and secondary neutralization tank, aeration and stirring system are set; Also has sour dosing system with the one-level neutralization tank links to each other with the secondary neutralization tank; The secondary neutralization tank connects coagulation basin;
Coagulation basin connects PAC medicine liquid tank and PAM medicine liquid tank, is provided with volume pump on connecting pipeline; PAC medicine liquid tank and PAM medicine liquid tank, HCl acid jar and NaOH medicine liquid tank constitute chemical medicine system; HCl acid jar connection neutralization tank, secondary neutralization tank and a secondary PH equalizing tank; The NaOH medicine liquid tank connects secondary PH equalizing tank; Secondary PH equalizing tank inlet end connects air flotation pool, warm cooling tower during exit end connects;
Coagulation basin connects the air supporting pretreatment system, and facing-up oil is scraped the slag dolly on the air flotation pool equipment; The air supporting pretreatment system connects warm cooling tower in the cooling system by secondary PH equalizing tank; The connecting pipeline of secondary PH equalizing tank outlet is provided with lift pump; In warm cooling tower connect the buffering pond by connecting pipeline; The buffering pond connects biological reaction tank by connecting pipeline; Biological reaction tank connects settling tank, and settling tank connects the biological filter, and the biological filter connects the final outflow water pond; Settling tank also is connected mud tank with biological reaction tank, and mud tank connects plate-and-frame filter press, and the connecting pipeline between mud tank and the plate-and-frame filter press is provided with sludge reflux pump.Deliver to mud tank from the mud of settling tank with sludge reflux pump and concentrate, the mud that is come out by mud tank is delivered to the plate-and-frame filter press dehydration with sludge reflux pump again.
Biochemical treatment system comprises biological reaction tank, inlet and outlet pipe lines and Aeration fan, and there is biologic packing material inside; Advanced treatment system is the biological filter, comprises inner stuffing and connecting tube; The sludge settling system is made up of mud tank, sludge reflux pump; The sludge dewatering treatment system is made of sludge thickener, mud tank and plate-and-frame filter press.
In native system, add alkali pump by variable frequency control, add acid by Stroke Control, through calculated with mathematical model, the PLC signal derives from the signal of each PH instrument to dosage by PLC.
Claims (1)
1. the treatment system of oil-containing alkaline waste water, it is characterized in that, form by oil-containing alkaline waste water neutralizing treatment system, air supporting pretreatment system, cooling system, biochemical treatment system, advanced treatment system, sludge settling system, sludge dewatering treatment system and chemical medicine system;
Oil-containing alkaline waste water neutralizing treatment system comprises alkali equalizing tank, one-level neutralization tank, secondary neutralization tank and coagulation basin, and the alkali equalizing tank is connected with the one-level neutralization tank by pipeline, is provided with lift pump on this pipeline; In one-level neutralization tank and secondary neutralization tank, aeration and stirring system are set; Also has sour dosing system with the one-level neutralization tank links to each other with the secondary neutralization tank; The secondary neutralization tank connects coagulation basin;
Coagulation basin connects PAC medicine liquid tank and PAM medicine liquid tank, is provided with volume pump on connecting pipeline; PAC medicine liquid tank and PAM medicine liquid tank, HCl acid jar and NaOH medicine liquid tank constitute chemical medicine system; HCl acid jar connection neutralization tank, secondary neutralization tank and a secondary PH equalizing tank; The NaOH medicine liquid tank connects secondary PH equalizing tank; Secondary PH equalizing tank inlet end connects air flotation pool, warm cooling tower during exit end connects;
Coagulation basin connects the air supporting pretreatment system, and facing-up oil is scraped the slag dolly on the air flotation pool equipment; The air supporting pretreatment system connects warm cooling tower in the cooling system by secondary PH equalizing tank; The connecting pipeline of secondary PH equalizing tank outlet is provided with lift pump; In warm cooling tower connect the buffering pond by connecting pipeline; The buffering pond connects biological reaction tank by connecting pipeline; Biological reaction tank connects settling tank, and settling tank connects the biological filter, and the biological filter connects the final outflow water pond; Settling tank also is connected mud tank with biological reaction tank, and mud tank connects plate-and-frame filter press, and the connecting pipeline between mud tank and the plate-and-frame filter press is provided with sludge reflux pump.
Biochemical treatment system comprises biological reaction tank, inlet and outlet pipe lines and Aeration fan, and there is biologic packing material inside; Advanced treatment system is the biological filter, comprises inner stuffing and connecting tube; The sludge settling system is made up of mud tank, sludge reflux pump; The sludge dewatering treatment system is made of sludge thickener, mud tank and plate-and-frame filter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101580822A CN101182090B (en) | 2007-11-12 | 2007-11-12 | Apparatus for treating oil-containing alkaline waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101580822A CN101182090B (en) | 2007-11-12 | 2007-11-12 | Apparatus for treating oil-containing alkaline waste water |
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| Publication Number | Publication Date |
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| CN101182090A CN101182090A (en) | 2008-05-21 |
| CN101182090B true CN101182090B (en) | 2011-02-09 |
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| CN101638283B (en) * | 2009-08-11 | 2011-09-28 | 中冶南方工程技术有限公司 | Two-stage biochemical treatment technique of cold rolling and silicon steel alkaline waste water |
| CN103086584A (en) * | 2013-02-25 | 2013-05-08 | 周海波 | Sludge treatment system and method |
| CN103373796A (en) * | 2013-08-14 | 2013-10-30 | 中国科学院成都生物研究所 | Method for treating oil refining wastewater |
| CN103739107B (en) * | 2013-11-14 | 2015-10-28 | 安徽省绿巨人环境技术有限公司 | A kind for the treatment of process of household appliances degreasing process waste water |
| CN104085931B (en) * | 2014-06-27 | 2016-04-06 | 河南易成新能源股份有限公司 | Industrial Wastewater Treatment integrated control and control method |
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| CN105384284A (en) * | 2015-12-21 | 2016-03-09 | 本钢板材股份有限公司 | Method and system for treating acid-alkali wastewater in wastewater station |
| CN105776762A (en) * | 2016-04-25 | 2016-07-20 | 北京斯凯特达科技开发有限公司 | Device and method for treating methanol-to-olefin waste alkali solution |
| CN105923819A (en) * | 2016-05-10 | 2016-09-07 | 宝钢工程技术集团有限公司 | Cold rolling acid wastewater and diluent alkali wastewater treatment and recovery method and system |
| CN107857425A (en) * | 2017-10-25 | 2018-03-30 | 河北德龙环境工程股份有限公司 | A kind of handling process of coke-oven waste water |
| CN109020087A (en) * | 2018-09-06 | 2018-12-18 | 苏伊士水务工程有限责任公司 | Comprehensive treatment process for high-sewage wastewater by mixing ethylene waste alkali liquor and desulfurization wastewater |
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| CN113636710A (en) * | 2020-04-27 | 2021-11-12 | 宝山钢铁股份有限公司 | Cold rolling alkaline wastewater treatment method and system |
| CN113845265B (en) * | 2020-06-25 | 2024-03-12 | 宝山钢铁股份有限公司 | Efficient alkaline wastewater treatment method and system |
| CN112661361B (en) * | 2020-12-29 | 2022-04-12 | 大连知微生物科技有限公司 | Oily sewage treatment method, treatment system and construction method of treatment system |
| CN114275972A (en) * | 2021-12-28 | 2022-04-05 | 中冶南方工程技术有限公司 | Low-cost resource utilization process for acidic wastewater |
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