CN1293154A - Process for removing ammoniacal nitrogen from sewage of coking - Google Patents
Process for removing ammoniacal nitrogen from sewage of coking Download PDFInfo
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- CN1293154A CN1293154A CN00123308A CN00123308A CN1293154A CN 1293154 A CN1293154 A CN 1293154A CN 00123308 A CN00123308 A CN 00123308A CN 00123308 A CN00123308 A CN 00123308A CN 1293154 A CN1293154 A CN 1293154A
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- waste water
- coked waste
- ammonia nitrogen
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- removal method
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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
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Abstract
A process for removing ammoniacal nitrogen from sewage of coking features that denitrificating reaction and back-nitrating reaction take place in anoxic pool where NO2 is as electron receptor, nitrosating reaction of NH3-N takes place in first segment of aerobic pool to obtain NO2, the part of sewage containing NO2 flows back to anoxic pool, and rest of sewage flows into second segment of aerobic pool. Its advantages are need of less bubbling air in nitrificating reaction, high back-nitrating rate, less consumption of sodium hydroxide, and low cost.
Description
The present invention relates to a kind of treatment process of coked waste water, especially ammonia nitrogen removal method in the coked waste water.
At present, after coked waste water adopts general biochemical method to handle, the ammonia nitrogen NH in the coked waste water
3-N can't be removed, and does not reach national specified discharge standard, and further treatment process adopts biological nitration-denitrification method more, and coked waste water is introduced in the anoxic pond, and contains nitrate NO
3 -Recirculation water mix and to carry out denitrification reaction, reaction process is nitrate NO
3 -In anoxic pond, be converted into nitrite NO earlier
2 -, nitrite NO
2 -Carry out anti-nitration reaction with the organism carbon source in the coked waste water, with nitrite NO
2 -Be converted into nitrogen N
2Discharge; Coked waste water enters Aerobic Pond after the denitrogenation, in Aerobic Pond, and the ammonia nitrogen NH in the coked waste water
3-N is oxidized to nitrite NO with nitrococcus generation nitration reaction earlier
2 -, nitrite NO
2 -Be oxidized to nitrate NO with the nitrifier nitration reaction again
3 -, contain nitrate NO
3 -A sewage part be back in the anoxic pond as recirculation water, participate in denitrification reaction in the anoxic pond.In this method, because nitration reaction is a two-step reaction in Aerobic Pond, the bulging air capacity that needs is big, and power consumption is big, and the alkali number that consumes is many; Anti-nitration reaction in anoxic pond also is a two-step reaction, and the organism carbon source of consumption is many, in coked waste water under the insufficient situation of carbon-nitrogen ratio, anti-nitration reaction is restricted, and it is few that denitrification produces alkali, and it is big that whole process consumes alkali number, the process cost height, cost of sewage disposal is big; Nitrification and denitrification all is a two-step reaction, so reaction tank is big, floor space is big, and investment is high.
The purpose of this invention is to provide ammonia nitrogen removal method in the coked waste water that a kind of processing cost is low, investment is low.
The object of the present invention is achieved like this:
Coked waste water is introduced in the anoxic pond, and contains nitrite NO
2 -Recirculation water mix and to carry out denitrification reaction, denitrifier is nitrite NO
2 -As electron acceptor(EA), organism carries out anti-nitration reaction as carbon source in the coked waste water, nitrite NO
2 -In nitrogen become nitrogen and escape in the atmosphere; Coked waste water enters one section of Aerobic Pond after the denitrogenation, in one section of Aerobic Pond, and the ammonia nitrogen NH in the coked waste water
3-N and nitrococcus generation nitrosation reaction are oxidized to nitrite NO
2 -, contain nitrite NO
2 -A sewage part be back in the anoxic pond as recirculation water, participate in denitrification reaction in the anoxic pond, the remaining nitrite NO that contains
2 -Sewage enter two sections of Aerobic Ponds, in two sections of Aerobic Ponds, nitrite NO
2 -With nitrifier nitration reaction taking place is oxidized to nitrate NO
3 -, contain a small amount of nitrate NO
3 -Sewage separate the back with mud and discharge.
Above-mentioned anti-nitration reaction in anoxic pond is in PH=6～8, carries out under dissolved oxygen＜0.5mg/L condition.
Above-mentioned nitrosation reaction in one section of Aerobic Pond is in PH=7～8, and dissolved oxygen carries out under 1～3mg/L condition.
Above-mentioned nitration reaction in two sections of Aerobic Ponds is in PH=6～7.5, and dissolved oxygen carries out under 1～3mg/L condition.
Above-mentioned recirculation water enters in the settling tank and separates, and isolated sewage is delivered in the anoxic pond, and mud is transmitted back to one section of Aerobic Pond.
The backwater ratio of above-mentioned recirculation water is 2～5.
Above-mentioned nitrococcus is a nitrosomonus.
Above-mentioned denitrifier is the different oxygen bacillus that comprises false single Pseudomonas, Mycosphaerella, achromobacter, bacillus.
The above-mentioned anoxic pond anti-nitration reaction time is 12～20 hours.
One nitrosation reaction period of above-mentioned Aerobic Pond is 16～24 hours.
Benefit of the present invention is:
Nitration reaction and anti-nitration reaction all are single step reactions, and the bulging air capacity that nitration reaction needs in Aerobic Pond is little, and power consumption is little; Anti-nitration reaction in anoxic pond, the organism carbon source of consumption is few, denitrification rate height, it is many to produce alkali, and it is few that whole process consumes alkali number, and process cost reduces, and cost of sewage disposal reduces, and reaction tank reduces, and floor space is little, and investment reduces.
Describe particular content of the present invention in detail below in conjunction with drawings and Examples:
Ammonia nitrogen removal method flow diagram in the accompanying drawing coked waste water
In the accompanying drawing, the 1st, anoxic pond, the 2nd, one section of Aerobic Pond, the 3rd, two sections of Aerobic Ponds, the 4th, recirculation water settling tank 4,5th is handled back mud and sewage settling tank.
Embodiment 1:
Handle water yield 130m
3/ h, chemical oxygen demand cod is about 1700mg/L in the coked waste water, ammonia nitrogen NH
4-N is about 220mg/L, and coked waste water is introduced in the anoxic pond 1, and contains nitrite NO
2 -Recirculation water mix and to carry out denitrification reaction, denitrifier is nitrite NO
2 -As electron acceptor(EA), organism in PH=6～8, carries out anti-nitration reaction under dissolved oxygen＜0.5mg/L condition, nitrite NO as carbon source in the coked waste water
2 -In nitrogen become nitrogen and escape in the atmosphere, denitrifier is the different oxygen bacillus that comprises false single Pseudomonas, Mycosphaerella, achromobacter, bacillus, the anoxic pond anti-nitration reaction time is 14 hours; Coked waste water enters a section 2 of Aerobic Pond after the denitrogenation, in one section of Aerobic Pond, and the ammonia nitrogen NH in the coked waste water
3-N and nitrosomonus, in PH=7～8, nitrosation reaction takes place and is oxidized to nitrite NO under 1～3mg/L condition in dissolved oxygen
2 -, contain nitrite NO
2 -A sewage part enter in the settling tank 4 and to separate, isolated sewage is as recirculation water, be back in the anoxic pond, mud is transmitted back to a section 2 of Aerobic Pond, the backwater ratio of recirculation water is 3, backwater participates in denitrification reaction in the anoxic pond than being meant recirculation water that is back in the anoxic pond and the ratio that newly enters the coked waste water in the anoxic pond, and one nitrosation reaction period of Aerobic Pond is 15 hours; The remaining nitrite NO that contains
2 -Sewage enter two section 3 of Aerobic Pond, in two sections of Aerobic Ponds, nitrite NO
2 -With nitrifier in PH=6～7.5, dissolved oxygen issues the caliche reaction in 1～3mg/L condition, is oxidized to nitrate NO
3 -After the mud and sewage mixed solution entered settling tank 5 separation, the top clear water effluxed, and the mud of bottom is transmitted back to a section 2 of Aerobic Pond.
The total hydraulic detention time of system is about 38 hours, effluent quality NH
4-N≤15mg/L, chemical oxygen demand cod≤100mg/L.
Embodiment 2:
Handle water yield 260m
3/ h, chemical oxygen demand cod is about 1200mg/L in the coked waste water, ammonia nitrogen NH
4-N is about 130mg/L, and coked waste water is introduced in the anoxic pond 1, and contains nitrite NO
2 -Recirculation water mix and to carry out denitrification reaction, denitrifier is nitrite NO
2 -As electron acceptor(EA), organism in PH=6～8, carries out anti-nitration reaction under dissolved oxygen＜0.5mg/L condition, nitrite NO as carbon source in the coked waste water
2 -In nitrogen become nitrogen and escape in the atmosphere, denitrifier is the different oxygen bacillus that comprises false single Pseudomonas, Mycosphaerella, achromobacter, bacillus, the anoxic pond anti-nitration reaction time is 18 hours; Coked waste water enters a section 2 of Aerobic Pond after the denitrogenation, in one section of Aerobic Pond, and the ammonia nitrogen NH in the coked waste water
3-N and nitrosomonus, in PH=7～8, nitrosation reaction takes place and is oxidized to nitrite NO under 2～3mg/L condition in dissolved oxygen
2 -, contain nitrite NO
2 -A sewage part enter in the settling tank 4 and to separate, isolated sewage is as recirculation water, be back in the anoxic pond, mud is transmitted back to a section 2 of Aerobic Pond, the backwater ratio of recirculation water is 4, backwater participates in denitrification reaction in the anoxic pond than being meant recirculation water that is back in the anoxic pond and the ratio that newly enters the coked waste water in the anoxic pond, and one nitrosation reaction period of Aerobic Pond is 18 hours; The remaining nitrite NO that contains
2 -Sewage enter two section 3 of Aerobic Pond, in two sections of Aerobic Ponds, nitrite NO
2 -With nitrifier in PH=6～7.5, dissolved oxygen issues the caliche reaction in 1～3mg/L condition, is oxidized to nitrate NO
3 -After the mud and sewage mixed solution entered settling tank 5 separation, the top clear water effluxed, and the mud of bottom is transmitted back to a section 2 of Aerobic Pond.
The total hydraulic detention time of system is about 50 hours, effluent quality NH
4-N≤15mg/L, chemical oxygen demand cod≤100mg/L.
Claims (11)
1. ammonia nitrogen removal method in the coked waste water, it is characterized in that: coked waste water is introduced in the anoxic pond, and contains nitrite NO
2 -Recirculation water mix and to carry out denitrification reaction, denitrifier is nitrite NO
2 -As electron acceptor(EA), organism carries out anti-nitration reaction as carbon source in the coked waste water, nitrite NO
2 -In nitrogen become nitrogen and escape in the atmosphere; Coked waste water enters one section of Aerobic Pond after the denitrogenation, in one section of Aerobic Pond, and the ammonia nitrogen NH in the coked waste water
3-N and nitrococcus generation nitrosation reaction are oxidized to nitrite NO
2 -, contain nitrite NO
2 -A sewage part be back in the anoxic pond as recirculation water, participate in denitrification reaction in the anoxic pond, the remaining nitrite NO that contains
2 -Sewage enter two sections of Aerobic Ponds, in two sections of Aerobic Ponds, nitrite NO
2 -With nitrifier nitration reaction taking place is oxidized to nitrate NO
3 -, contain a small amount of nitrate NO
3 -Sewage separate the back and discharge.
2. ammonia nitrogen removal method in the coked waste water according to claim 1 is characterized in that: the anti-nitration reaction in anoxic pond is in PH=6～8, carries out under dissolved oxygen＜0.5mg/L condition.
3. ammonia nitrogen removal method in the coked waste water according to claim 1 is characterized in that: the nitrosation reaction in one section of Aerobic Pond is in PH=7～8, and dissolved oxygen carries out under 1～3mg/L condition.
4. ammonia nitrogen removal method in the coked waste water according to claim 1 is characterized in that: the nitration reaction in two sections of Aerobic Ponds is in PH=6～7.5, and dissolved oxygen carries out under 1～5mg/L condition.
5. ammonia nitrogen removal method in the coked waste water according to claim 1 is characterized in that: recirculation water enters in the settling tank and separates, and isolated sewage is delivered in the anoxic pond, and mud is transmitted back to one section of Aerobic Pond.
6. ammonia nitrogen removal method in the coked waste water according to claim 1 or 5 is characterized in that: the backwater of recirculation water is than 2～5.
7. ammonia nitrogen removal method in the coked waste water according to claim 1 is characterized in that: nitrococcus is a nitrosomonus.
8. ammonia nitrogen removal method in the coked waste water according to claim 1 is characterized in that: denitrifier is the different oxygen bacillus that comprises false single Pseudomonas, Mycosphaerella, achromobacter, bacillus.
9. ammonia nitrogen removal method in the coked waste water according to claim 1 and 2 is characterized in that: the anoxic pond anti-nitration reaction time is 12～20 hours.
10. according to ammonia nitrogen removal method in claim 1 or the 3 described coked waste waters, it is characterized in that: one nitrosation reaction period of Aerobic Pond is 15～24 hours.
11. ammonia nitrogen removal method in the coked waste water according to claim 1 is characterized in that: contain a small amount of nitrate NO
3 -Sewage enter in the settling tank and separate, mud is transmitted back to one section of Aerobic Pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00123308A CN1116235C (en) | 2000-11-23 | 2000-11-23 | Process for removing ammoniacal nitrogen from sewage of coking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00123308A CN1116235C (en) | 2000-11-23 | 2000-11-23 | Process for removing ammoniacal nitrogen from sewage of coking |
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|---|---|
| CN1293154A true CN1293154A (en) | 2001-05-02 |
| CN1116235C CN1116235C (en) | 2003-07-30 |
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| CN00123308A Expired - Lifetime CN1116235C (en) | 2000-11-23 | 2000-11-23 | Process for removing ammoniacal nitrogen from sewage of coking |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361909C (en) * | 2005-10-20 | 2008-01-16 | 彭永臻 | Adjusting method for A/O biological denitrification reactor and nitrification process, its on-line fuzzy controller and control thereof |
| CN100402444C (en) * | 2006-08-29 | 2008-07-16 | 湖南大学 | Operation mode and apparatus of short distance nitration-anaerobic ammoxidation batched biomembrane denitrogenation |
| CN100404436C (en) * | 2005-06-03 | 2008-07-23 | 清华大学 | Culture method of aerobic nitrosated granular sludge |
| CN100457655C (en) * | 2005-08-18 | 2009-02-04 | 同济大学 | Integrated sewage treating process in flocculant biological flow bed |
| CN1926072B (en) * | 2004-03-01 | 2010-04-14 | 栗田工业株式会社 | Method of nitrifying ammonium-nitrogen-containing water and method of treating the same |
| CN101817617A (en) * | 2010-02-27 | 2010-09-01 | 韦旺 | Comprehensive treatment process for coking wastewater |
| CN101085693B (en) * | 2006-06-08 | 2011-12-14 | 韩国建设技术研究院 | Biological removal method of phosphorus and nitrogen using granulated methan-oxidizing bacteria and apparatus therefor |
| CN102336501A (en) * | 2011-08-12 | 2012-02-01 | 联众（广州）不锈钢有限公司 | Cold rolled steel coil wastewater treatment method |
| CN102642980A (en) * | 2012-03-30 | 2012-08-22 | 河北钢铁股份有限公司唐山分公司 | Coking wastewater total nitrogen removal method |
| US8273246B2 (en) | 2008-12-29 | 2012-09-25 | Industrial Technology Research Institute | System and method for treating ammonia-based wastewater |
| CN102718371A (en) * | 2012-07-13 | 2012-10-10 | 神华集团有限责任公司 | Treatment method and treatment equipment for coal chemical industry wastewater |
| CN102774985A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Method for treating high-concentration ammonia-nitrogen in coal chemical wastewater |
| CN102791641A (en) * | 2010-03-10 | 2012-11-21 | 齐克拉-斯图尔茨污水处理技术有限公司 | Method for the biological purification of ammonium-containing wastewater |
| CN102826656A (en) * | 2012-09-19 | 2012-12-19 | 上海水合环境工程有限公司 | Industrial sewage deep denitrifying and recycling process |
| CN102976497A (en) * | 2011-09-02 | 2013-03-20 | 北京昊海天际科技有限公司 | Method for treating high-concentration organic waste water by bacilli |
| CN105645665A (en) * | 2014-12-05 | 2016-06-08 | 中国石油化工股份有限公司 | Processing method of hardly degradable organic waste water |
-
2000
- 2000-11-23 CN CN00123308A patent/CN1116235C/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1926072B (en) * | 2004-03-01 | 2010-04-14 | 栗田工业株式会社 | Method of nitrifying ammonium-nitrogen-containing water and method of treating the same |
| CN100404436C (en) * | 2005-06-03 | 2008-07-23 | 清华大学 | Culture method of aerobic nitrosated granular sludge |
| CN100457655C (en) * | 2005-08-18 | 2009-02-04 | 同济大学 | Integrated sewage treating process in flocculant biological flow bed |
| CN100361909C (en) * | 2005-10-20 | 2008-01-16 | 彭永臻 | Adjusting method for A/O biological denitrification reactor and nitrification process, its on-line fuzzy controller and control thereof |
| CN101085693B (en) * | 2006-06-08 | 2011-12-14 | 韩国建设技术研究院 | Biological removal method of phosphorus and nitrogen using granulated methan-oxidizing bacteria and apparatus therefor |
| CN100402444C (en) * | 2006-08-29 | 2008-07-16 | 湖南大学 | Operation mode and apparatus of short distance nitration-anaerobic ammoxidation batched biomembrane denitrogenation |
| US8273246B2 (en) | 2008-12-29 | 2012-09-25 | Industrial Technology Research Institute | System and method for treating ammonia-based wastewater |
| CN101817617A (en) * | 2010-02-27 | 2010-09-01 | 韦旺 | Comprehensive treatment process for coking wastewater |
| CN102791641B (en) * | 2010-03-10 | 2014-10-29 | 达蒙有限公司 | Method for the biological purification of ammonium-containing wastewater |
| CN102791641A (en) * | 2010-03-10 | 2012-11-21 | 齐克拉-斯图尔茨污水处理技术有限公司 | Method for the biological purification of ammonium-containing wastewater |
| CN102336501A (en) * | 2011-08-12 | 2012-02-01 | 联众（广州）不锈钢有限公司 | Cold rolled steel coil wastewater treatment method |
| CN102976497A (en) * | 2011-09-02 | 2013-03-20 | 北京昊海天际科技有限公司 | Method for treating high-concentration organic waste water by bacilli |
| CN102976497B (en) * | 2011-09-02 | 2014-03-26 | 北京昊海天际科技有限公司 | Method for treating high-concentration organic waste water by bacilli |
| CN102642980A (en) * | 2012-03-30 | 2012-08-22 | 河北钢铁股份有限公司唐山分公司 | Coking wastewater total nitrogen removal method |
| CN102718371A (en) * | 2012-07-13 | 2012-10-10 | 神华集团有限责任公司 | Treatment method and treatment equipment for coal chemical industry wastewater |
| CN102718371B (en) * | 2012-07-13 | 2014-07-09 | 神华集团有限责任公司 | Treatment method and treatment equipment for coal chemical industry wastewater |
| CN102774985A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Method for treating high-concentration ammonia-nitrogen in coal chemical wastewater |
| CN102826656B (en) * | 2012-09-19 | 2013-09-25 | 上海水合环境工程有限公司 | Industrial sewage deep denitrifying and recycling process |
| CN102826656A (en) * | 2012-09-19 | 2012-12-19 | 上海水合环境工程有限公司 | Industrial sewage deep denitrifying and recycling process |
| CN105645665A (en) * | 2014-12-05 | 2016-06-08 | 中国石油化工股份有限公司 | Processing method of hardly degradable organic waste water |
Also Published As
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|---|---|
| CN1116235C (en) | 2003-07-30 |
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Owner name: ZHONGYE COKE RESISTANCE ENGINEERING TECHNOLOGY CO. Free format text: FORMER NAME OR ADDRESS: ANSHAN GENERAL DESIGN INST. OF COKING REFRACTORY MATERIALS, CHINESE METALLURGICA |
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Address after: 114002 No. 27 Shengli Road, Tiedong District, Liaoning, Anshan Co-patentee after: Chemical Co., Ltd. of Baoshan Iron and Steel Group, Shanghai Patentee after: ACRE Coking and Refractory Engineering Consulting Corporation, MCC Address before: 114002 No. 27 Shengli Road, Tiedong District, Liaoning, Anshan Co-patentee before: Chemical Co., Ltd. of Baoshan Iron and Steel Group, Shanghai Patentee before: Anshan General Design Inst. of Coking Refractory Materials, Chinese Metallurgica |
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Granted publication date: 20030730 |