CN1803651A - Zero-discharge coked wastewater treatment system - Google Patents
Zero-discharge coked wastewater treatment system Download PDFInfo
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- CN1803651A CN1803651A CN 200610005557 CN200610005557A CN1803651A CN 1803651 A CN1803651 A CN 1803651A CN 200610005557 CN200610005557 CN 200610005557 CN 200610005557 A CN200610005557 A CN 200610005557A CN 1803651 A CN1803651 A CN 1803651A
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Abstract
The zero-discharge treatment system for coking sewage comprises an advanced treatment technique and a film device to remove ammonia nitrogen. Based on original foundation, it recovers the treated fresh water for circulation and the condensed water (riched in ammonia nitrogen) for coke quenching water. This invention is a new treatment way for coking sewage.
Description
Affiliated technical field
The present invention relates to a kind of Zero-discharge coked wastewater system, it belongs to the environmental engineering class, specifically is a kind of wastewater treating technology class.
Background technology
Coking chemical waste water mainly contains heterogeneous ring compound of phenols, polycyclc aromatic compound and nitrogenous, oxygen, sulphur etc., is a kind of typical refractory organic industrial sewage.In recent decades, China has carried out a large amount of research explorations and has developed some improvement technology also having some problems simultaneously to coking chemical waste water, as two sections biochemistry, add growth hormone and back coagulation technology etc. to reducing COD in the water and all having obtained certain effect but handle the COD in the water of back about 300mg/l, can only reach secondary discharge standard; Bio-denitrification technology greatly reduces ammonia-nitrogen content in the water but wants very difficulty up to standard; A lot of coke-oven plants have also considered comprehensive utilization, and the portion water reuse is done quenching, dedusting make up water, coal works watering etc. to reduce total amount of sewage discharge to greatest extent but the water yield of reuse is limited by each side, account for the proportion of Total Water and little.
Summary of the invention
The invention provides a kind of Zero-discharge coked wastewater treatment system, on the basis of original biochemical treatment, coking chemical waste water is carried out advanced treatment, and the advanced ammonia nitrogen removal membrane separation technique of employing, the fresh water part of handling caudacoria can reach the cycle water requirement, circulating condensing water is made in reuse, dense water section can be used as coke quenching water, thereby realizes the zero release of coking chemical waste water, is the new outlet that solves the coking chemical waste water pollution problem.
The technical solution adopted for the present invention to solve the technical problems is: on former biochemical basis of handling coking chemical waste water is done advanced treatment, after adopting oxidisability active flocculant coagulation air-float and hybrid ionic strainer, reduce COD and SS, reduce the probability that film pollutes to greatest extent, and the advanced ammonia nitrogen removal membrane technique of employing, can realize separating of ammonia nitrogen and water, the fresh water part of handling caudacoria can reach the cycle water requirement, circulating condensing water is made in reuse, dense water section can be used as coke quenching water, realizes the zero release of coking chemical waste water.
The invention has the beneficial effects as follows, realized Zero-discharge coked wastewater, significantly reduced the disposal of pollutants total amount, saved water of productive use, thoroughly solved the coking chemical waste water pollution problem, reclaimed precious water resource, belong to the recycling economy category.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples:
Fig. 1 is a process flow diagram of the present invention
Fig. 2 is the fundamental diagram of ammonia nitrogen removal film
Among the figure 1, oxidizing, flocculating pond 2, efficient air-floating pond 3, degassing pond 4, hybrid ionic strainer 5, middle pond 6, pump 7, ammonia nitrogen removal membrane separation unit 8, low pure water pond 9, afterbay 10, oxidisability active flocculant 11, coagulant aids 12, water quality stabilizer 13, water quality stabilizer supplemental tank
Embodiment
In Fig. 1, the water outlet (general COD about 300mg/1) of coking chemical waste water after former biochemical the processing enters oxidizing, flocculating pond 1, behind oxidisability active flocculant 10 and coagulant aids 11 coagulations, enter efficient air-floating pond 2, (COD enters hybrid ionic strainer 4 (special type filler) 80～100mg/1) after 3 degassings of degassing pond in water outlet, organism can further be adsorbed, SS in the while trap water, water outlet is as clear as crystal, pond 5 in the middle of entering.At this moment mainly contain ammonia nitrogen in the water, add water quality stabilizer 12 (ammonia nitrogen complexing agent), enter ammonia nitrogen removal membrane separation unit 7 (modification pollution-resistant membrane) after pump 6 superchargings, the fresh water part of film can reach cycle water and require to be stored in the low pure water pond 8, and circulating condensing water is made in reuse; Dense water section is stored in the afterbay 9 and can be used as coke quenching water.
In Fig. 2, ammonia nitrogen forms stable complex compound in water inlet adding water quality stabilizer 12 and the water, enters the ammonia nitrogen removal membrane separation unit after pump 6 superchargings, and permeate water can be done recirculated water for low pure water.Ammonia nitrogen complex compound, salt and remaining water quality stablizer tunicle are retained in dense end, dope partly can be recycled the utilization ratio with the stablizer of increasing water quality, and rest part enters in the afterbay 9.Simultaneously by constantly mending new water quality stabilizer in the water quality stabilizer supplemental tank 13, with its consumption of balance.
Application example of the present invention is: certain coke-oven plant, the daily output green coke waste water water yield is 2400 tons/day, water outlet COD after the raw waste water treatment system is handled is 300mg/l, ammonia nitrogen 100mg/l adopts the present invention, and it is water of condensation that wherein 1800 tons/day are handled reuses, all the other 600 tons/day are back to quenching, the coking chemical waste water of full factory can reach zero release, saves a large amount of water of productive use, produces favorable economic benefit.
Claims (4)
1, a kind of Zero-discharge coked wastewater treatment system, mainly form by advanced treatment process and ammonia nitrogen removal film device, it is characterized in that: adopt the oxidisability active flocculant to handle in conjunction with efficient air-floating, remove COD and SS in the water through hybrid ionic strainer (special type filler) again, make water quality reach the water inlet requirement of extraordinary pollution-resistant membrane, and adopt advanced ammonia nitrogen removal membrane technique to realize separating of ammonia nitrogen and water, handle back water fully recovering.
2, Zero-discharge coked wastewater treatment system according to claim 1 is characterized in that: hybrid ionic strainer (special type filler) work security personnel processing is handled and was adopted in air supporting behind the advanced treatment employing oxidisability active flocculant coagulation before advancing film.
3, Zero-discharge coked wastewater treatment system according to claim 1 is characterized in that: ammonia nitrogen removal membrane sepn process adopts adds water quality stabilizer and ammonia nitrogen formation stable comple.
4, Zero-discharge coked wastewater treatment system according to claim 1 is characterized in that: the recycle of water quality stabilizer part is to save running cost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610005557 CN1803651A (en) | 2006-01-12 | 2006-01-12 | Zero-discharge coked wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610005557 CN1803651A (en) | 2006-01-12 | 2006-01-12 | Zero-discharge coked wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1803651A true CN1803651A (en) | 2006-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610005557 Pending CN1803651A (en) | 2006-01-12 | 2006-01-12 | Zero-discharge coked wastewater treatment system |
Country Status (1)
| Country | Link |
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| CN (1) | CN1803651A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412011C (en) * | 2006-09-15 | 2008-08-20 | 合肥工业大学 | Coking Wastewater Treatment Method Combining Tetravalent Manganese Compound Oxidation, Chemical Precipitation and Biochemistry |
| CN100465110C (en) * | 2006-12-30 | 2009-03-04 | 山东大隆实业有限公司 | Coking waste water reuse treatment method |
| CN103846010A (en) * | 2012-11-29 | 2014-06-11 | 沈阳工业大学 | Preparation method of self-assembly nanofiltration separation membrane for high salinity and high ammonia nitrogen wastewater |
-
2006
- 2006-01-12 CN CN 200610005557 patent/CN1803651A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412011C (en) * | 2006-09-15 | 2008-08-20 | 合肥工业大学 | Coking Wastewater Treatment Method Combining Tetravalent Manganese Compound Oxidation, Chemical Precipitation and Biochemistry |
| CN100465110C (en) * | 2006-12-30 | 2009-03-04 | 山东大隆实业有限公司 | Coking waste water reuse treatment method |
| CN103846010A (en) * | 2012-11-29 | 2014-06-11 | 沈阳工业大学 | Preparation method of self-assembly nanofiltration separation membrane for high salinity and high ammonia nitrogen wastewater |
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