CN101885560A - Coking wastewater full-denitrifying treatment process by adopting activated sludge method - Google Patents
Coking wastewater full-denitrifying treatment process by adopting activated sludge method Download PDFInfo
- Publication number
- CN101885560A CN101885560A CN201010212709XA CN201010212709A CN101885560A CN 101885560 A CN101885560 A CN 101885560A CN 201010212709X A CN201010212709X A CN 201010212709XA CN 201010212709 A CN201010212709 A CN 201010212709A CN 101885560 A CN101885560 A CN 101885560A
- Authority
- CN
- China
- Prior art keywords
- treatment
- aerobic
- stage
- pond
- anoxic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 45
- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- 238000004939 coking Methods 0.000 title claims abstract description 21
- 239000010802 sludge Substances 0.000 title claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 66
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 63
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000010865 sewage Substances 0.000 claims abstract description 9
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000001112 coagulating effect Effects 0.000 claims abstract description 4
- 238000004062 sedimentation Methods 0.000 claims abstract description 4
- 206010002660 Anoxia Diseases 0.000 claims abstract 2
- 241000976983 Anoxia Species 0.000 claims abstract 2
- 206010021143 Hypoxia Diseases 0.000 claims abstract 2
- 230000007953 anoxia Effects 0.000 claims abstract 2
- 238000006396 nitration reaction Methods 0.000 claims description 9
- 230000009189 diving Effects 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 53
- 229910052760 oxygen Inorganic materials 0.000 abstract description 53
- 239000001301 oxygen Substances 0.000 abstract description 53
- 239000000126 substance Substances 0.000 abstract 1
- 239000002894 chemical waste Substances 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000005276 aerator Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to a coking wastewater full-denitrifying treatment process by adopting an activated sludge method, which comprises the processes of pretreatment, biochemical treatment, coagulating sedimentation treatment and advanced treatment. A two-stage anoxic (facultatively anaerobic)/aerobic biological denitrifying process is adopted in the biochemical treatment; pretreated sewage is refluxed to first stage anoxia (facultative anaerobism) for carrying out denitrifying treatment after subjected to first stage aerobic pond denitrifying treatment, and the ammonia nitrogen content of the treated sewage is smaller than 5mg/l; discharge water after the first stage anoxic (facultatively anaerobic)/aerobic treatment enters second stage anoxic (facultatively anaerobic) treatment; a carbon source needed by denitrifying reaction is supplemented by adding methanol into a second stage anoxic (facultatively anaerobic) pond so as to ensure that residual nitric nitrogen is denitrified into gaseous nitrogen in the second stage anoxic (facultatively anaerobic) pond; and in order to prevent excessive methanol discharge and ensure that the COD (Chemical Oxygen Demand) of discharge water does not exceed the standard, a second stage aerobic pond is arranged behind the second stage anoxic (facultatively anaerobic) pond. The invention has the advantages that the removal rate of total nitrogen can be effectively improved by treating the coking wastewater through utilizing the two-stage anoxic (facultatively anaerobic)/aerobic (A-O/A-O) biological denitrifying treatment process, and nitrogen in the coking wastewater is converted into a gaseous state for being discharged from the water, thereby achieving the aim of full denitrification; and the total nitrogen in the treated wastewater reaches below 15mg/l as required by a new standard.
Description
Technical field
The present invention relates to a kind of coking waste-water denitrification, particularly a kind of coking wastewater full-denitrifying treatment process that adopts activated sludge process.
Background technology
At present, coked waste water is handled and is generally adopted A/O biological denitrificaion treatment technology, handle back sewage and reach the existing integrated wastewater discharge standard of country, ammonia nitrogen in the waste water can be controlled at below the 5mg/l, and total denitrogenation clearance is not high, and the form with nitric nitrogen about the about 70mg/l of part nitrogen is discharged in the water body with water.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, to the most desirable, most economical effective treatment process of removing of total nitrogen 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 invention is to provide a kind of coking wastewater full-denitrifying treatment process that adopts activated sludge 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 decreasing ratio 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.
For achieving the above object, the present invention is achieved through the following technical solutions:
Adopt the coking wastewater full-denitrifying treatment process of activated sludge process, comprise that pre-treatment, biochemical treatment, coagulating sedimentation are handled, advanced treatment process, biochemical treatment adopts two-stage to lack (holding concurrently) oxygen/aerobic biological denitrification process, pretreated sewage is after first step Aerobic Pond nitration treatment, be back to scarce (holding concurrently) oxygen of the first step and carry out the denitrification processing, handle back sewage ammonia nitrogen＜5mg/l; The water outlet that one-level lacks after (holding concurrently) oxygen/aerobic treatment enters scarce (holding concurrently) oxygen processing in the second stage, replenish the required carbon source of anti-nitration reaction by in scarce (holding concurrently) oxygen pond, the second stage, adding methyl alcohol, making remaining nitric nitrogen lack (holding concurrently) oxygen pond denitrification in the second stage is gaseous nitrogen, for preventing that excessive methanol from effluxing, guarantee that outer draining COD does not exceed standard, after the second stage lacks (holding concurrently) oxygen pond, be provided with second stage Aerobic Pond.
Lack (holding concurrently) oxygen and adopt activated sludge process, diving mixer is set in the reaction tank; Mixed-liquor return after the one-level Aerobic Pond nitration treatment to one-level lacks (holding concurrently) oxygen pond and carries out the denitrification processing, and the water after the secondary aerobic treatment precipitates through second pond, and returned sluge is back to one-level and lacks (holding concurrently) oxygen pond.
At raw waste water COD at 2000～5000mg/l, NH
4 +-N concentration is at 70～150mg/l, and organonitrogen is under the raw water quality condition of 50～120mg/l, and described methyl alcohol dosage is that every liter of waste water adds methyl alcohol 150～250mg according to nitric nitrogen concentration.
One-level lacks 18～40 hours (holding concurrently) oxygen residence time, 36～80 hours aerobic residence time of one-level; Secondary lacks 10～30 hours (holding concurrently) oxygen residence time, 3～5 hours aerobic residence time of secondary.
The aerobic mixed-liquor return of the above-mentioned first step lacks (holding concurrently) oxygen to the first step, and internal circulating load is 5～10 times; The above-mentioned first step is aerobic/and lack (holding concurrently) oxygen denitrification rate and reach 70～80%; The above-mentioned second stage lacks (holding concurrently) oxygen (A) handles, and realizes by add 150～250mg/l methyl alcohol in scarce (holding concurrently) oxygen pond.Above-mentioned two-stage lacks (holding concurrently) oxygen/aerobic (A/O) biological denitrificaion processing total nitrogen extrusion rate and reaches 90～95%.Above-mentioned processed waste water total nitrogen is less than 15mg/l.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention 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.
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 70～80%, 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 invention 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.
Description of drawings
Fig. 1 is the coking wastewater full-denitrifying treatment process schema that adopts activated sludge process.
Embodiment
See Fig. 1, adopt the coking wastewater full-denitrifying treatment process of activated sludge process, comprise that pre-treatment, biochemical treatment, coagulating sedimentation are handled, advanced treatment process, biochemical treatment adopts two-stage to lack (holding concurrently) oxygen/aerobic biological denitrification process, pretreated sewage is after first step Aerobic Pond nitration treatment, be back to scarce (holding concurrently) oxygen of the first step and carry out the denitrification processing, handle back sewage ammonia nitrogen＜5mg/l; The water outlet that one-level lacks after (holding concurrently) oxygen/aerobic treatment enters scarce (holding concurrently) oxygen processing in the second stage, replenish the required carbon source of anti-nitration reaction by in scarce (holding concurrently) oxygen pond, the second stage, adding methyl alcohol, making remaining nitre attitude ammonia lack (holding concurrently) oxygen pond denitrification in the second stage is gaseous nitrogen, for preventing that excessive methanol from effluxing, guarantee that outer draining COD does not exceed standard, after the second stage lacks (holding concurrently) oxygen pond, be provided with second stage Aerobic Pond.
Lack (holding concurrently) oxygen and handle the employing activated sludge process, diving mixer is set in the reaction tank; Water after the one-level Aerobic Pond nitration treatment is back to scarce (holding concurrently) oxygen pond of one-level and carries out the denitrification processing, and the water after the secondary aerobic treatment precipitates through second pond, and returned sluge is back to one-level and lacks (holding concurrently) oxygen pond.
Example:
The raw waste water amount is 100m
3/ h, raw water quality COD 2000mg/l, ammonia nitrogen 60mg/l, organonitrogen is 80mg/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 outer circulation biological denitrification process, lack (holding concurrently) oxygen, the aerobic activated sludge process that all adopts lacks in (holding concurrently) oxygen and establishes diving mixer, and one-level lacks 18 hours (holding concurrently) oxygen residence time, aerobic employing micro-hole aerator, 36 hours aerobic residence time of one-level, return current ratio of the mixed liquid 300%, denitrification rate 70～80%, water outlet ammonia nitrogen＜5mg/l, nitre attitude hydrochlorate nitrogen≤60mg/l, the one-level outputted aerobic water enters secondary and lacks (holding concurrently) oxygen pond, and secondary lacks 12 hours (holding concurrently) oxygen residence time, add methyl alcohol 150mg/l, 5 hours aerobic residence time of secondary, handle back water outlet ammonia nitrogen less than 1mg/l, total nitrogen＜15mg/l.
One-level is aerobic, the temperature of secondary aerobic reaction is 25～30 ℃; Dissolved oxygen DO＞4mg/l; The temperature of reaction that one-level lacks (holding concurrently) oxygen, scarce (holding concurrently) oxygen of secondary is 30～38 ℃; Dissolved oxygen DO＜0.5mg/l; PH=7.
This embodiment is in numerous examples, here enumerates no longer one by one.Be through repeatedly testing the conclusion that draws below.
At raw waste water COD at 2000～5000mg/l, NH
4 +-N concentration is at 70～150mg/l, and organonitrogen is under the raw water quality condition of 50～120mg/l, and the methyl alcohol dosage is that every liter of waste water adds methyl alcohol 150～250mg according to nitric nitrogen concentration.
One-level lacks 18～40 hours (holding concurrently) oxygen residence time, 36～80 hours aerobic residence time of one-level; Secondary lacks 10～30 hours (holding concurrently) oxygen residence time, 3～5 hours aerobic residence time of secondary.
The aerobic mixed-liquor return of the above-mentioned first step lacks (holding concurrently) oxygen to the first step, and internal circulating load is 3～10 times; The above-mentioned first step is aerobic/and lack (holding concurrently) oxygen denitrification rate and reach 70～80%; The above-mentioned second stage lacks (holding concurrently) oxygen (A) handles, and realizes by add 150～250mg/l methyl alcohol in scarce (holding concurrently) oxygen pond.Above-mentioned two-stage lacks (holding concurrently) oxygen/aerobic (A/O) biological denitrificaion processing total nitrogen extrusion rate and reaches 90～95%.Above-mentioned processed waste water total nitrogen is less than 15mg/l.
Claims (5)
1. adopt the coking wastewater full-denitrifying treatment process of activated sludge process, comprise that pre-treatment, biochemical treatment, coagulating sedimentation are handled, advanced treatment process, it is characterized in that, two-stage anoxia/aerobic biological denitrification process is adopted in biochemical treatment, pretreated sewage is after first step Aerobic Pond nitration treatment, be back to first step anoxic and carry out the denitrification processing, handle back sewage ammonia nitrogen＜5mg/l; Water outlet after one-level anoxic/aerobic treatment enters second stage anaerobic treatment, replenish the required carbon source of anti-nitration reaction by in the anoxic pond of the second stage, adding methyl alcohol, making remaining nitric nitrogen is gaseous nitrogen at second stage anoxic pond denitrification, for preventing that excessive methanol from effluxing, guarantee that outer draining COD does not exceed standard, and is provided with second stage Aerobic Pond after the anoxic pond of the second stage.
2. the coking wastewater full-denitrifying treatment process of employing activated sludge process according to claim 1 is characterized in that, described anoxic adopts activated sludge process, and diving mixer is set in the reaction tank; Water after the one-level Aerobic Pond nitration treatment is back to the one-level anoxic pond and carries out the denitrification processing, and the water after the secondary aerobic treatment precipitates through second pond, and returned sluge is back to the one-level anoxic pond.
3. the coking wastewater full-denitrifying treatment process of employing activated sludge process according to claim 1 and 2 is characterized in that, at raw waste water COD at 2000～5000mg/l, NH
4 +-N concentration is at 70～150mg/l, and organonitrogen is under the raw water quality condition of 50～120mg/l, and described methyl alcohol dosage is that every liter of waste water adds methyl alcohol 150～250mg according to nitric nitrogen concentration.
4. the coking wastewater full-denitrifying treatment process of employing activated sludge process according to claim 1 and 2 is characterized in that, 18～40 hours one-level anoxic residence time, 36～80 hours aerobic residence time of one-level, 3～10 times of aerobic return current ratio of the mixed liquid; 10～30 hours secondary anoxic residence time, 3～5 hours aerobic residence time of secondary.
5. the coking wastewater full-denitrifying treatment process of employing activated sludge process according to claim 1 and 2 is characterized in that, the waste water total nitrogen is less than 15mg/l after the described art breading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010212709XA CN101885560A (en) | 2010-06-30 | 2010-06-30 | Coking wastewater full-denitrifying treatment process by adopting activated sludge method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010212709XA CN101885560A (en) | 2010-06-30 | 2010-06-30 | Coking wastewater full-denitrifying treatment process by adopting activated sludge method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101885560A true CN101885560A (en) | 2010-11-17 |
Family
ID=43071684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010212709XA Pending CN101885560A (en) | 2010-06-30 | 2010-06-30 | Coking wastewater full-denitrifying treatment process by adopting activated sludge method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101885560A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126811A (en) * | 2011-01-21 | 2011-07-20 | 北京建工环境发展有限责任公司 | Double-anoxic denitrification method and equipment for enhanced denitrification of sewage |
| CN105967445A (en) * | 2016-06-22 | 2016-09-28 | 北京桑德环境工程有限公司 | Biochemical treatment system and method of waste water through conny pressure gasification |
| CN106186533A (en) * | 2016-08-08 | 2016-12-07 | 北京润宇环保工程有限公司 | Processing equipment and percolation liquid treatment method for waste landfill site leachate |
| CN106915861A (en) * | 2015-12-24 | 2017-07-04 | 中国科学院过程工程研究所 | A kind of coal chemical industrial waste water biological treatment system and its processing method based on sludge ozone catalysis oxidation |
| CN109626746A (en) * | 2019-01-14 | 2019-04-16 | 中原环保郑州设备工程科技有限公司 | The middle-size and small-size multipoint water feeding advanced nitrogen dephosphorization sewage disposal system of integration and processing method |
| CN110498569A (en) * | 2019-08-30 | 2019-11-26 | 四川达兴能源股份有限公司 | A kind of advanced treatment system and processing method of coking wastewater |
| CN111675326A (en) * | 2020-05-21 | 2020-09-18 | 浙江海元环境科技有限公司 | High-concentration biological enrichment reactor and method for treating manual yellow wine wastewater by using same |
| 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 |
| CN114790065A (en) * | 2021-01-25 | 2022-07-26 | 山东瑞赛克环保有限公司 | A kind of treatment process of slaughter sewage |
| CN116903140A (en) * | 2023-08-24 | 2023-10-20 | 国家能源集团宁夏煤业有限责任公司 | Device and method for treating high-salt wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514069A (en) * | 2009-04-03 | 2009-08-26 | 北京首钢国际工程技术有限公司 | Biological denitrification treatment process for coking wastewater |
| CN101654300A (en) * | 2008-08-18 | 2010-02-24 | 刘晓宇 | Biological full-denitrification treatment technology for 'F/O/F' coking wastewater |
-
2010
- 2010-06-30 CN CN201010212709XA patent/CN101885560A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654300A (en) * | 2008-08-18 | 2010-02-24 | 刘晓宇 | Biological full-denitrification treatment technology for 'F/O/F' coking wastewater |
| CN101514069A (en) * | 2009-04-03 | 2009-08-26 | 北京首钢国际工程技术有限公司 | Biological denitrification treatment process for coking wastewater |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126811A (en) * | 2011-01-21 | 2011-07-20 | 北京建工环境发展有限责任公司 | Double-anoxic denitrification method and equipment for enhanced denitrification of sewage |
| CN102126811B (en) * | 2011-01-21 | 2013-04-24 | 北京建工环境发展有限责任公司 | Double-anoxic denitrification method and equipment for enhanced denitrification of sewage |
| CN106915861A (en) * | 2015-12-24 | 2017-07-04 | 中国科学院过程工程研究所 | A kind of coal chemical industrial waste water biological treatment system and its processing method based on sludge ozone catalysis oxidation |
| CN105967445A (en) * | 2016-06-22 | 2016-09-28 | 北京桑德环境工程有限公司 | Biochemical treatment system and method of waste water through conny pressure gasification |
| CN106186533A (en) * | 2016-08-08 | 2016-12-07 | 北京润宇环保工程有限公司 | Processing equipment and percolation liquid treatment method for waste landfill site leachate |
| CN109626746A (en) * | 2019-01-14 | 2019-04-16 | 中原环保郑州设备工程科技有限公司 | The middle-size and small-size multipoint water feeding advanced nitrogen dephosphorization sewage disposal system of integration and processing method |
| CN110498569A (en) * | 2019-08-30 | 2019-11-26 | 四川达兴能源股份有限公司 | A kind of advanced treatment system and processing method of coking wastewater |
| CN111675326A (en) * | 2020-05-21 | 2020-09-18 | 浙江海元环境科技有限公司 | High-concentration biological enrichment reactor and method for treating manual yellow wine wastewater by using same |
| CN111675326B (en) * | 2020-05-21 | 2022-08-09 | 浙江海元环境科技有限公司 | High-concentration biological enrichment reactor and method for treating manual yellow wine wastewater by using same |
| CN115159680A (en) * | 2020-05-21 | 2022-10-11 | 浙江海元环境科技有限公司 | Composite sludge strain for yellow rice wine wastewater treatment and wastewater treatment method |
| CN115159680B (en) * | 2020-05-21 | 2024-02-13 | 浙江海元环境科技有限公司 | Composite sludge strain for yellow wine wastewater treatment and wastewater treatment method |
| 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 |
| CN114790065A (en) * | 2021-01-25 | 2022-07-26 | 山东瑞赛克环保有限公司 | A kind of treatment process of slaughter sewage |
| CN116903140A (en) * | 2023-08-24 | 2023-10-20 | 国家能源集团宁夏煤业有限责任公司 | Device and method for treating high-salt wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101885560A (en) | Coking wastewater full-denitrifying treatment process by adopting activated sludge method | |
| CN101880109A (en) | Full-denitrification treatment process of coked wastewater by adopting biological membrane method | |
| CN108483655B (en) | A method for deep denitrification of short-range nitrification and denitrification coupled with anaerobic ammonia oxidation and sulfur autotrophic denitrification | |
| WO2020220922A1 (en) | Method and apparatus for treating urban sewage by coupling anaerobic ammonia oxidation with endogenous short-range denitrification of anoxic zone of aoa process | |
| CN102190398B (en) | Coking wastewater treatment method | |
| CN102633359B (en) | Method for treating total nitrogen of nitrogen-containing chemical wastewater | |
| Wu et al. | Advanced nitrogen removal using bio-refractory organics as carbon source for biological treatment of landfill leachate | |
| US11919790B2 (en) | Anaerobic-AO-SACR combined advanced nitrogen removal system and technology for high ammonia-nitrogen wastewater | |
| US20170066668A1 (en) | Highly effective sewage treatment based on regulation and control of directed electron flow and apparatus thereof | |
| CN102010102A (en) | Method for treating electroplating wastewater | |
| CN111039500A (en) | Short-range and full-range coupled biological denitrification process for treating electroplating wastewater | |
| CN104445833B (en) | A kind of method of wastewater biochemical denitrogenation | |
| CN110759593A (en) | Process for treating coking wastewater by multistage A/O (anoxic/oxic) through sectional water inflow | |
| CN106032295A (en) | Enhanced nitrogen and phosphorus removal method for efficient treatment of high-concentration organic wastewater by complex microorganisms | |
| CN201665583U (en) | Garbage percolate biological denitrogenation device | |
| CN107840550B (en) | Method for treating garbage leachate | |
| CN104108794A (en) | Wastewater treatment device and method of sequencing batch A/O (Anaerobic/Oxic) linked system for realizing partial nitrification of wastewater | |
| CN110563267B (en) | A kind of industrial wastewater denitrification treatment method | |
| CN205442947U (en) | Coking wastewater treatment system | |
| CN107381958A (en) | Carbon nitrogen divergence type denitrification process | |
| CN105668949A (en) | Biological nitrogen removal system and method for high ammonia-nitrogen coal gasification waste water | |
| CN201785285U (en) | Coking Wastewater Total Denitrification Treatment System Using Activated Sludge Process | |
| CN202643438U (en) | Two-section type jet flow biological nitrogen removal reactor | |
| CN107010794B (en) | Dye wastewater treatment device and method | |
| KR100322947B1 (en) | Method for removing nitrogen in waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101117 |