CN201785286U - Coking waste water complete denitrification treatment system adopting biological membrane method - Google Patents
Coking waste water complete denitrification treatment system adopting biological membrane method Download PDFInfo
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- CN201785286U CN201785286U CN2010202415020U CN201020241502U CN201785286U CN 201785286 U CN201785286 U CN 201785286U CN 2010202415020 U CN2010202415020 U CN 2010202415020U CN 201020241502 U CN201020241502 U CN 201020241502U CN 201785286 U CN201785286 U CN 201785286U
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Abstract
The utility model relates to a coking waste water complete denitrification treatment system adopting a biological membrane method, which comprises a pretreatment device, a biochemical treatment device and a coagulating sedimentation treatment device. The treatment system is characterized in that the biochemical treatment device provided with two stages of oxygen deficit/aerobic devices comprises a primary oxygen deficit tank, a primary aerobic tank, a backflow sedimentation tank, a secondary oxygen deficit tank and a secondary aerobic tank which are sequentially connected, a backflow water channel is arranged between the backflow sedimentation tank and the primary oxygen deficit tank, a backflow mud channel is arranged between the backflow sedimentation tank and the primary aerobic tank, the secondary aerobic tank is connected with a secondary clarifier, and a backflow mud channel is arranged between the secondary clarifier and the secondary aerobic tank. The coking waste water complete denitrification treatment system has the advantages that total denitrification rate can be effectively increased by adopting two stages of oxygen deficit (facultative)/aerobic (A-O/A-O) biological denitrification treatment technique for treating coking waste water, and nitrogen in the coking waste water is converted into a gas state to be discharged from the water so as to achieve the purpose of complete denitrification and lead total nitrogen in treated waste water to be lower than 15mg/l of the new standard requirement.
Description
Technical field
The utility model relates to a kind of coking chemical waste water denitrification system, the particularly a kind of full denitrogenation processing of coking chemical waste water system that adopts biomembrance process.
Background technology
At present, coked waste water is handled and is generally adopted A/O biological denitrificaion treatment technology, handles back sewage and reaches the existing integrated wastewater discharge standard of country, and the ammonia nitrogen in the waste water can be controlled at below the 10mg/l, and total denitrogenation clearance is not high, and part nitrogen is discharged in the water body with water with the form of nitric nitrogen.The coking chemical waste water standard that effluxes that the part city and state are about to put into effect has proposed new requirement to total nitrogen, requires less than 15mg/l, and is the most desirable to deviating from of total nitrogen, most economical effective treatment process or biological process.
The coking chemical waste water that is about to put into effect at country effluxes the requirement of standard to total nitrogen, how to improve denitrification percent, is industry problem demanding prompt solution.
Summary of the invention
The purpose of this utility model provides a kind of full denitrogenation processing of coking chemical waste water system that adopts biomembrance process, utilize two-stage to lack (holding concurrently) oxygen/aerobic (A-O/A-O) biological denitrificaion treatment process and handle coked waste water, can effectively improve the extrusion rate of total nitrogen, with the nitrogen transformation in the coking chemical waste water is that gaseous state is discharged from water, thereby reaches the purpose of complete denitrogenation.
For achieving the above object, the utility model is achieved through the following technical solutions:
Adopt the full denitrogenation processing of the coking chemical waste water system of biomembrance process, comprise pretreatment unit, biochemical treatment apparatus, coagulating sedimentation treatment unit, it is characterized in that, it is characterized in that, biochemical treatment apparatus adopts two-stage anoxic/aerobic device, comprise that one-level anoxic pond, one-level Aerobic Pond, reflux sedimentation tank, secondary anoxic pond, secondary Aerobic Pond connect to form successively, be provided with the recirculation water passage between reflux sedimentation tank and the one-level anoxic pond, be provided with the returned sluge passage between reflux sedimentation tank and the one-level Aerobic Pond; The secondary Aerobic Pond connects second pond, is provided with the returned sluge passage between second pond and the secondary Aerobic Pond.
Compared with prior art, the beneficial effects of the utility model are:
The utility model utilizes two-stage to lack (holding concurrently) oxygen/aerobic (A-O/A-O) biological denitrificaion treatment process and handles coked waste water, improve the extrusion rate of total nitrogen, with the nitrogen transformation in the coking chemical waste water is that gaseous state is discharged from water, thereby reach the purpose of complete denitrogenation, total nitrogen in the processed waste water is reached below the 15mg/l that new standard requires.
Description of drawings
Fig. 1 adopts the full denitrogenation processing system flowchart of the coking chemical waste water of biomembrance process.
Embodiment
See Fig. 1, adopt the full denitrogenation processing of the coking chemical waste water system of biomembrance process, comprise that pretreatment unit, biochemical treatment apparatus, coagulating sedimentation treatment unit, biochemical treatment apparatus adopt two-stage anoxic/aerobic device, comprise that one-level anoxic pond, one-level Aerobic Pond, reflux sedimentation tank, secondary anoxic pond, secondary Aerobic Pond connect to form successively, be provided with the recirculation water passage between reflux sedimentation tank and the one-level anoxic pond, be provided with the returned sluge passage between reflux sedimentation tank and the one-level Aerobic Pond; The secondary Aerobic Pond connects second pond, is provided with the returned sluge passage between second pond and the secondary Aerobic Pond.
Anoxic adopts biomembrance process, and filler is set in the reaction tank, adopts the water distributor water distribution, and microbial film is attached on the filler; Behind the one-level Aerobic Pond reflux sedimentation tank is set, the recirculation water of reflux sedimentation tank is back to the one-level anoxic pond, and the returned sluge of reflux sedimentation tank is back to the one-level Aerobic Pond; Water after the secondary aerobic treatment precipitates through second pond, and returned sluge is back to the secondary Aerobic Pond.
The raw waste water amount is 100m
3/ h, raw water quality COD 4500mg/l, ammonia nitrogen 100mg/l, organonitrogen are about 120mg/l, the pre-treatment oil removing, enter biochemical section, the biochemical two-stage that adopts lacks (holding concurrently) oxygen/aerobic (A-O/A-O) biological denitrificaion treatment process, first step A/O adopts the internal recycle biological denitrification process, lacks (holding concurrently) oxygen pond employing biomembrance process, in establish combined stuffing, lack 40 hours (holding concurrently) oxygen residence time, aerobic employing micro-hole aerator, 80 hours aerobic residence time, supernatant liquor reflux ratio 600%, return sludge ratio 600%, denitrification rate≤80%, water outlet ammonia nitrogen＜5mg/l, nitre attitude hydrochlorate nitrogen≤60mg/l, the reflux sedimentation tank water outlet enters the second stage and lacks (holding concurrently) oxygen pond, secondary lacks 24 hours (holding concurrently) oxygen residence time, adds methyl alcohol 250mg/l, 5 hours aerobic residence time of secondary, handle back water outlet ammonia nitrogen less than 1mg/l, total nitrogen＜15mg/l.
Technological principle is: the first step lacks organism in (holding concurrently) oxygen/former water of aerobic (A/O) process makes full use as the denitrification organic carbon source, make the denitrification rate reach～80%, utilizing the second stage to lack (holding concurrently) oxygen (A) again handles, replenish the required carbon source of denitrification by in scarce (holding concurrently) oxygen pond, adding organism such as methyl alcohol, making residue nitric nitrogen denitrification in scarce (holding concurrently) oxygen pond, the second stage is gaseous state, to reach the purpose of the complete denitrogenation of coking chemical waste water; For preventing that excessive methanol from effluxing, guarantee that outer draining COD does not exceed standard, the second stage adds one section Aerobic Pond after lacking (holding concurrently) oxygen pond.Characteristics of the present utility model are: first step A/O utilizes the organism in the former water, reduce the consumption of organic carbon source, the second stage lacks (holding concurrently) oxygen denitrification and adds methyl alcohol, and the water outlet total nitrogen can be controlled at below the 15mg/l, the aerobic excessive methanol that prevents in the second stage effluxes, and guarantees that outer draining COD does not exceed standard.
Claims (1)
1. adopt the full denitrogenation processing of the coking chemical waste water system of biomembrance process, comprise pretreatment unit, biochemical treatment apparatus, coagulating sedimentation treatment unit, it is characterized in that, biochemical treatment apparatus adopts two-stage anoxic/aerobic device, comprise that one-level anoxic pond, one-level Aerobic Pond, reflux sedimentation tank, secondary anoxic pond, secondary Aerobic Pond connect to form successively, be provided with the recirculation water passage between reflux sedimentation tank and the one-level anoxic pond, be provided with the returned sluge passage between reflux sedimentation tank and the one-level Aerobic Pond; The secondary Aerobic Pond connects second pond, is provided with the returned sluge passage between second pond and the secondary Aerobic Pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202415020U CN201785286U (en) | 2010-06-30 | 2010-06-30 | Coking waste water complete denitrification treatment system adopting biological membrane method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202415020U CN201785286U (en) | 2010-06-30 | 2010-06-30 | Coking waste water complete denitrification treatment system adopting biological membrane method |
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| CN201785286U true CN201785286U (en) | 2011-04-06 |
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| CN2010202415020U Expired - Lifetime CN201785286U (en) | 2010-06-30 | 2010-06-30 | Coking waste water complete denitrification treatment system adopting biological membrane method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630149A (en) * | 2017-01-12 | 2017-05-10 | 机械工业第六设计研究院有限公司 | Biomembrance two-stage A/O denitrification system and biomembrance two-stage A/O denitrification process |
| CN108558134A (en) * | 2018-04-11 | 2018-09-21 | 宝钢工程技术集团有限公司 | A kind of processing system of coking wastewater removing total nitrogen |
| CN112110606A (en) * | 2020-09-07 | 2020-12-22 | 山东东岳高分子材料有限公司 | Treatment system and method for removing total nitrogen in polytetrafluoroethylene dispersion resin wastewater |
-
2010
- 2010-06-30 CN CN2010202415020U patent/CN201785286U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630149A (en) * | 2017-01-12 | 2017-05-10 | 机械工业第六设计研究院有限公司 | Biomembrance two-stage A/O denitrification system and biomembrance two-stage A/O denitrification process |
| CN108558134A (en) * | 2018-04-11 | 2018-09-21 | 宝钢工程技术集团有限公司 | A kind of processing system of coking wastewater removing total nitrogen |
| CN112110606A (en) * | 2020-09-07 | 2020-12-22 | 山东东岳高分子材料有限公司 | Treatment system and method for removing total nitrogen in polytetrafluoroethylene dispersion resin wastewater |
| CN112110606B (en) * | 2020-09-07 | 2022-06-07 | 山东东岳高分子材料有限公司 | Treatment system and method for removing total nitrogen in polytetrafluoroethylene dispersion resin wastewater |
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Granted publication date: 20110406 |