CN204211605U - A kind of wastewater of caprolactam production treatment unit - Google Patents
A kind of wastewater of caprolactam production treatment unit Download PDFInfo
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- CN204211605U CN204211605U CN201420637546.3U CN201420637546U CN204211605U CN 204211605 U CN204211605 U CN 204211605U CN 201420637546 U CN201420637546 U CN 201420637546U CN 204211605 U CN204211605 U CN 204211605U
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Abstract
A kind of wastewater of caprolactam production treatment unit, it comprises bio-chemical effluent pond 1, strainer 2, catalyzed oxidation pond 3, intermediate pool 4, BAF 5 and clean water basin 6, and is connected by pipeline successively, and ozone generating-device 7 is connected with catalyzed oxidation pond 3; Its advantage is by BAF, remaining in water capable of being fast degraded can biochemical organism; By the combination of catalytic ozonation and BAF, the function that the two is respective can be given full play to, reduce the utilization ratio of ozone simultaneously, shorten oxidization time, saved investment and running cost; This arranges rationally, and technical process is simple, good to pollutant removal, is conducive to the qualified discharge of wastewater of caprolactam production.
Description
Technical field
The present invention relates to one and process efficient, the simple wastewater of caprolactam production treatment unit of technical process, belong to Treatment of Industrial Water technical field.
Background technology
Hexanolactam is a kind of important Organic Chemicals, the main raw material being used as production polyamide 6 engineering plastics and daiamid-6 fiber.Its common production method is mainly divided into benzene method and toluene method two class.In wastewater of caprolactam production, the pollutant load such as organism, ammonia nitrogen is higher, and environmental hazard is large, and its principal pollutant are pimelinketone, hexanaphthene, benzene, hexalin, cyclohexanone-oxime, organic acid, hexanolactam, ammonia nitrogen etc.From the ratio of BOD/COD, the BOD/COD>0.5 of caprolactam wastewater, belongs to the sewage of good biodegradability.The treatment process that this waste water is the most frequently used at present mainly contains up-flow anaerobic sludge blanket, A/O biochemical process etc.Sewage, after biochemical treatment, although ammonia nitrogen wherein and organism obtain the removal of the overwhelming majority, still can not reach emission standard, remain more Persistent organic pollutants in water, and water body color is darker.Adopt biochemical method process if continue, have little effect, be therefore necessary to seek a kind of method beyond biochemistry or combination process carries out modification to sewage, remove colourity, organic pollutent is degraded further, finally realizes the object of discharged wastewater met the national standard.
Patent CN 102219327 discloses a kind of membrane method treating process of caprolactam wastewater, this technical scheme is: the suspended substance etc. of caprolactam wastewater first in coagulation-Sand Filtration System removing waste water, then the most of pollutent such as metal ion, organism in waste water is retained through nanofiltration and reverse osmosis system, although this technique treatment effect is high, also exist one-time investment costly, the problem such as operation is unstable; Patent CN103011527 A discloses a kind of oxidation-MBR treatment process of wastewater of caprolactam production, comprise the following steps: a, wastewater of caprolactam production is regulated pH after introduce enhanced reactor, in enhanced reactor, waste water and oxygenant react, and organic concentration declines and biodegradability improves; B, enhanced reactor water outlet enter MBR Biochemistry Reaction System after pH regulator, depositing technology process, and Biochemistry Reaction System is used for removing organic pollutant and denitrogenation further.This invention can improve the utilising efficiency of oxygenant, but this invention oxidation stage process condition control overflow high (as adopt supercritical water make oxygenant time), catalyzer easily run off (as adopt catalyst solution) etc. problem, water outlet just can enter Biochemistry Reaction System after need regulating pH and precipitation, and Biochemistry Reaction System also exists the high deficiency of investment cost.
Summary of the invention
The utility model provides a kind of and processes efficient, the simple wastewater of caprolactam production treatment unit of technical process.
The utility model device comprises bio-chemical effluent pond 1, strainer 2, catalyzed oxidation pond 3, intermediate pool 4, BAF 5 and clean water basin 6, and is connected by pipeline successively, and ozone generating-device 7 is connected with catalyzed oxidation pond 3.It is characterized in that bio-chemical effluent pond 1 is connected with strainer 2, strainer 2 is connected with catalyzed oxidation pond 3, and catalyzed oxidation pond 3 is connected with intermediate pool 4, and intermediate pool 4 is connected with BAF 5, BAF 5 is connected with clean water basin 6, and wherein ozone generating-device 7 is connected with catalyzed oxidation pond 3.
The concrete treating processes of the utility model device is: bio-chemical effluent pond 1 water outlet is after filter 2 filters, enter catalyzed oxidation pond 3, catalyzed oxidation pond 3 water outlet enters intermediate pool 4, and intermediate pool 4 water outlet enters BAF 5, and BAF 5 water outlet enters the rear qualified discharge of clean water basin 6.Ozone generating-device 7 is connected with catalyzed oxidation pond 3, for catalyzed oxidation pond 3 provides ozonated air.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the utility model device.
In figure: 1-bio-chemical effluent pond, 2-strainer, 3-catalyzed oxidation pond, 4-intermediate pool, 5-BAF, 6-clean water basin, 7-ozone generating-device.
Embodiment
First, make all parts, then each parts are connected by pipeline, concrete mode of connection is: bio-chemical effluent pond 1 is connected with strainer 2, strainer 2 is connected with catalyzed oxidation pond 3, and catalyzed oxidation pond 3 is connected with intermediate pool 4, and intermediate pool 4 is connected with BAF 5, BAF 5 is connected with clean water basin 6, and wherein ozone generating-device 7 is connected with catalyzed oxidation pond 3.
Concrete treating processes is: bio-chemical effluent pond 1 water outlet is after filter 2 filters, and enter catalyzed oxidation pond 3, catalyzed oxidation pond 3 water outlet enters intermediate pool 4, and intermediate pool 4 water outlet enters BAF 5, and BAF 5 water outlet enters the rear qualified discharge of clean water basin 6.Ozone generating-device 7 is connected with catalyzed oxidation pond 3, for catalyzed oxidation pond 3 provides ozonated air.
The utility model is positioned at the transition section of the Changjiang river and Dongting Lake at Hunan petroleum chemical enterprise Sewage outlet, and draining water body belongs to national III class waters, by GB8978-1996, requires to perform first discharge standard to Equations of The Second Kind pollutent.This enterprise's wastewater of caprolactam production adopts A-O to be main biochemical process process, and standard water discharge rate is low.Through multi-argument, adopt the technique of this utility model can realize the stably reaching standard discharge of waste water, reduction water pollutions is had great importance.
The beneficial effects of the utility model are:
By filtering, removing the suspended substance in bio-chemical effluent, being conducive to the ozone dosage reducing follow-up catalytic ozonation process section, improve the utilising efficiency of ozone, ensure oxidation effectiveness simultaneously;
By catalytic ozonation, effect and the stability of oxide treatment can not only be ensured, and easy and simple to handle, can according to water quality and quantity flexible processing parameter;
Residual ozone can be eliminated in water to the toxic action of microorganism in aeration biological filter device by intermediate pool;
By BAF, remaining in water capable of being fast degraded can biochemical organism;
By the combination of catalytic ozonation and BAF, the function that the two is respective can be given full play to, reduce the utilization ratio of ozone simultaneously, shorten oxidization time, saved investment and running cost.
In sum, the utility model device arranges rationally, and technical process is simple, good to pollutant removal, is conducive to the qualified discharge of wastewater of caprolactam production.
Claims (1)
1. a wastewater of caprolactam production treatment unit, it comprises bio-chemical effluent pond (1), strainer (2), catalyzed oxidation pond (3), intermediate pool (4), BAF (5) and clean water basin (6), and be connected by pipeline successively, ozone generating-device (7) is connected with catalyzed oxidation pond (3); It is characterized in that bio-chemical effluent pond (1) is connected with strainer (2), strainer (2) is connected with catalyzed oxidation pond (3), catalyzed oxidation pond (3) is connected with intermediate pool (4), intermediate pool (4) is connected with BAF (5), BAF (5) is connected with clean water basin (6), and wherein ozone generating-device (7) is connected with catalyzed oxidation pond 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420637546.3U CN204211605U (en) | 2014-10-30 | 2014-10-30 | A kind of wastewater of caprolactam production treatment unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420637546.3U CN204211605U (en) | 2014-10-30 | 2014-10-30 | A kind of wastewater of caprolactam production treatment unit |
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| CN204211605U true CN204211605U (en) | 2015-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174423A (en) * | 2019-10-11 | 2021-01-05 | 福建天辰耀隆新材料有限公司 | Method for treating caprolactam production wastewater |
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2014
- 2014-10-30 CN CN201420637546.3U patent/CN204211605U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174423A (en) * | 2019-10-11 | 2021-01-05 | 福建天辰耀隆新材料有限公司 | Method for treating caprolactam production wastewater |
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