CN100999366A - Coking waste water reuse treatment method - Google Patents
Coking waste water reuse treatment method Download PDFInfo
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- CN100999366A CN100999366A CN 200610170941 CN200610170941A CN100999366A CN 100999366 A CN100999366 A CN 100999366A CN 200610170941 CN200610170941 CN 200610170941 CN 200610170941 A CN200610170941 A CN 200610170941A CN 100999366 A CN100999366 A CN 100999366A
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Abstract
This invention relates to a reclaiming and processing method of charred waste water, which is used in coking industry. It utilizes method of combining physical, chemical processing and reversing osmosis membrane processing to process charring waste water. Its basic processing flow-sheet is: 1. Aerator aerates. 2. Adjust PH to 9-11, add denitrifying agent number one MgCl2.6H2O and number two Na2HPO4, mix,, add positive ion starch-dicyandiamide-formaldehyde-polymerized chloride ferric flocculating agent. 3. Filter with multi-medium filtrator. 4. Remove ammonia nitrogen with deaminizing nitrogen filtrator. 5. Reduction reaction process. 6. Carry out membrane processing by nanometer material compound membrane. Charring waste water processed by this invention has following characteristics: synthesize process cost is low. Operation is easy. Running is stable. It benefits for industrialization.
Description
(1) technical field
The present invention is a kind of method of wastewater treatment, the process for reclaiming of the coking chemical waste water in particularly a kind of coking industry.
(2) background technology
The Treatment for Reuse of coking chemical waste water is one of more scabrous difficult problem in the present domestic waste water recycling treatment industry.The normal technology that adopts of present domestic Treatment of Wastewater in Coking is A-O (anaerobic-aerobic) method or A-A-O (anaerobic-anoxic-aerobic) method, and its processing cost is higher and the water outlet effect is relatively poor, is difficult to reach national grade one discharge standard after the normal operation.It is reported that applicable cases is preferably in the present coking industry climbs steel, Shoudu Iron and Steel Co etc., the waste water after handling also can only reach national secondary or first discharge standard.As the degree of water reuse standard in wanting to reach, there is certain technical difficulty.Though other treatment processs have relevant report and corresponding patent thereof, as application (patent) number: 200510047393.2 energy-saving coking waste water treatment process, application (patent) number: 200510024373.3 1 kinds of coking chemical waste water denitrogenation methods etc., also just reach emission standard, handle specific to coking waste water reuse, do not see the report that practical application is arranged.
(3) summary of the invention
The present invention has overcome the deficiency of above technology, and a kind of coking waste water reuse treatment method is provided, and it is low that this method has running cost, and treatment effect is good, and is easy and simple to handle, stable, is beneficial to industrialized advantage.
The present invention realizes by following measure:
The coking waste water reuse treatment method of this patent, the method Treatment of Wastewater in Coking that adopts physics and chemical treatment and reverse osmosis membrane processing to combine, its base conditioning flow process is:
1, aeration tank aeration: this processing unit aeration process is conventional aeration method, in aeration process, open the dioxide peroxide that chlorine dioxide generator adds the 60-200mg/L amount, make partial impurities in its oxidized waste water, reach the effect of oxidation and decolouring, for example can with benzene class impurity generation ring-opening reaction in the water, increase the activity of benzene class impurity, be convenient to postorder and handle aeration 3-5 hour.
2, the waste water behind the aeration is pumped into agitated pool, regulate PH to 9-11, add denitrogenation reagent 1
#Reagent MgCl
2.6H
2O and 2
#Reagent N a
2HPO
4, ammonia-nitrogen, 1 in the waste water wherein
#With 2
#The mol ratio of reagent is 1: (1.0～2.0): (0.4～1.8), mix the back and add cationic starch-Dyhard RU 100-formaldehyde-poly ferric chloride flocculant agent, continue to stir 20-30 minute according to the amount adding back of 1-5 kilogram/ton water.
3, Jiang Shui carries out sedimentation, and clear liquid pumps into more medium filter and filters, and removes the soluble impurity of part solid impurity and small part.The settling tank excess sludge through sludge pump and pipe-line transportation to the mud preliminary sedimentation tank or directly to the machine room that dewaters with the pressure filter dehydration after, dried mud can be used as fertilizer.Above-mentioned more medium filter is the strainer of flyash, hard coal and quartz sand layering place mat.
4, the more medium filter water outlet is pumped into the ammonia nitrogen removal strainer and carry out the removal of ammonia and nitrogen processing, the ammonia nitrogen removal filtrate in the ammonia nitrogen removal strainer is a modified zeolite, but the ammonia nitrogen in the effective elimination waste water, and decreasing ratio is about 60-70%.
5, water outlet pumps into reduction reactor, and reduction reactor is filled with the mixture of quartz sand and gac, macroporous resin, can effectively remove the heavy metal in the waste water, impurity such as chlorine residue in sulfide, the water.
6, the reduction reactor water outlet inserts security personnel's strainer, and security personnel's strainer is that filter core is the micro-filtration of the pp spray fusing cotton of 5um, but the impurity of effectively catching particle diameter＞5um ensures the safety that the postorder film is handled.
7, filtering water outlet is carried out film through nano material complex film and is handled, and the pressure of dense water one side of control composite membrane is at 1.3-1.5Mpa.Above-mentioned composite membrane is the nano material complex film of the patent No.: ZL02136000.6, this composite membrane is different from common reverse osmosis membrane and nanofiltration membrane, it has that ultralow pressure operation (1.3-1.5MPa), height are measured thoroughly, high interception rate, high resistance to crocking and characteristics such as long lifetime more, makes the comprehensive treating process cost greatly reduce than normal film technology.After film is handled, ammonia-nitrogen content≤9mg/L in the waste water, CODcr≤35mg/L reaches enterprise's reuse standard fully.
8, in order further to remove the simple decolouring of impurity and do, the operation that the postorder film is handled is safer, and waste water can carry out ultrafiltration membrance filter earlier behind security personnel's strainer, and then carries out next step composite membrane processing.
Adopt the art of this patent Treatment of Wastewater in Coking, have following characteristics:
1, the comprehensive treating process cost is low, and economic benefit is obvious.Adopt the art of this patent, a ton Treatment of Coking Effluent cost only is about 5 yuan, adopts biochemical treatment then to need about 10 yuan, and the mud that produces can make fertilizer, and the middle water of output can directly use as the water supply of coke-oven plant, save water rate, funds such as effluent charge.Save water resources simultaneously, promoted the development of recycling economy.
2, adopt the art of this patent, can really realize the zero release of waste water, stopped pollution environment.
3, easy and simple to handle, stable, be beneficial to industrialization.The art of this patent is passed through pilot plant test as can be known, and whole technological operation is got up simple and feasible, and control is simple, and can realize automatization control as required.
(4) embodiment
Below in conjunction with specific examples the present invention is made specific description.
Get 1.5 tons of coking chemical waste waters (the about 3000-10000mg/L of COD content, the about 600-1200mg/L of ammonia-nitrogen content) in the aeration tank, aeration 4 hours.Open chlorine dioxide generator in the aeration process, with the amount adding dioxide peroxide of 60-200mg/L water.Discard the floating foam in surface.
Waste water behind the aeration is pumped into agitated pool to be stirred.Regulate waste water PH to 9-11 with caustic soda or lime, add denitrogenation 1
#Reagent MgCl
2.6H
2O and 2
#Reagent N a
2HPO
4, wherein the mol ratio of ammonia-nitrogen content and 1# reagent, 2# reagent is 1: (1.0～2.0): (0.4～1.8), continue stirring and add flocculation agent (add-on 1-5 kilogram/ton water) after 10--20 minute, stirred 20-30 minute.Slowly flow into the inclined plate sedimentation pond and carry out sedimentation (dominant discharge 1.0-5.0 ton/hour).Mud after the sedimentation dewaters after collecting.Dried mud is as fertilizer, and sewage returns the aeration tank and handles once more.
Supernatant liquor after the sedimentation pumps into more medium filter and the ammonia nitrogen removal strainer is handled.The control flow velocity is not more than 2 tons/hour.Water outlet pumps into the MDF reduction reactor, and the water outlet of MDF reduction reactor inserts security personnel's strainer and ultra-filtration membrane device.Described more medium filter is the strainer of flyash, hard coal and quartz sand layering place mat; The ammonia nitrogen removal filtrate of described ammonia nitrogen removal strainer is a modified zeolite; Described MDF reduction reactor is filled with the mixture of quartz sand and gac, macroporous resin; Described security personnel's strainer is that filter core is the micro-filtration of the pp spray fusing cotton of 5um.
The ultra-filtration membrane water outlet enters after with the topping-up pump supercharging and obtains national patent (patent No.: nano material complex film ZL02136000.6) carries out film to be handled.The pressure of dense water one side of controlling diaphragm assembly is at 1.4MPa.This moment, the dense water that produced was approximately 1 with the ratio of output discharge: 2-4, output water COD content at 30-35mg/L, ammonia-nitrogen content at 5-9mg/L.Get back to water unit as reuse water; Dense water returns the aeration tank and handles or be used for handling stack gas with waste water.
Adopt above-mentioned art breading coking chemical waste water.The COD that can make waste water by original 3000-10000mg/L drop to 30-35mg/L, ammonia nitrogen drops to 5-9mg/L by original 600-1200mg/L, processing cost only is 5 yuan of/ton water.The water purification of institute's output meets the relevant criterion of water reuse in the country fully.
Claims (3)
1. coking waste water reuse treatment method is characterized in that adopting following steps:
(1) aeration tank aeration: add the dioxide peroxide of 60-200mg/L in the aeration tank, aeration 3-5 hour;
(2) waste water behind the aeration is pumped into agitated pool, regulate PH to 9-11, according to ammonia-nitrogen, 1 in the waste water
#Reagent and 2
#The mol ratio of reagent is 1: (1.0～2.0): the ratio of (0.4～1.8) adds denitrogenation reagent 1
#Reagent MgCl
2.6H
2O and 2
#Reagent N a
2HPO
4, after mixing, adding cationic starch-Dyhard RU 100-formaldehyde-poly ferric chloride flocculant agent, the add-on of flocculation agent is 1-5 kilogram/ton water, continues to stir 20-30 minute;
(3) waste water after the stirring carries out sedimentation, and clear liquid pumps into more medium filter and filters;
(4) waste water with more medium filter pumps in the ammonia nitrogen removal strainer, carries out ammonia nitrogen removal and handles, and the ammonia nitrogen removal filtrate of ammonia nitrogen removal strainer is a modified zeolite;
(5) water outlet pumps into reduction reactor and carries out reduction reaction, and reduction reactor is filled with the mixture of quartz sand, gac and macroporous resin;
(6) waste water behind the reduction reactor inserts security personnel's strainer, and security personnel's strainer is that filter core is the micro-filtration of the pp spray fusing cotton of 5um;
(7) water outlet after the filtration is carried out nano material complex film again and is carried out the film processing, and the pressure of dense water one side of control composite membrane is at 1.3-1.5MPa.
2. coking waste water reuse treatment method according to claim 1 is characterized in that: waste water behind ultrafiltration membrance filter, carries out composite membrane again and handles behind security personnel's strainer.
3. coking waste water reuse treatment method according to claim 1 and 2 is characterized in that:
Described more medium filter is the strainer of flyash, hard coal and quartz sand layering place mat.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101709415A CN100465110C (en) | 2006-12-30 | 2006-12-30 | Coking waste water reuse treatment method |
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|---|---|---|---|
| CNB2006101709415A CN100465110C (en) | 2006-12-30 | 2006-12-30 | Coking waste water reuse treatment method |
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| CN100999366A true CN100999366A (en) | 2007-07-18 |
| CN100465110C CN100465110C (en) | 2009-03-04 |
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| CNB2006101709415A Expired - Fee Related CN100465110C (en) | 2006-12-30 | 2006-12-30 | Coking waste water reuse treatment method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559349B (en) * | 2009-05-08 | 2011-04-27 | 济南大学 | Calcination-free zeolite filter material and preparation method thereof |
| CN102167477A (en) * | 2011-03-17 | 2011-08-31 | 开滦能源化工股份有限公司 | Recycle system and recycle method of coked wastewater |
| CN102173542A (en) * | 2011-03-21 | 2011-09-07 | 开滦能源化工股份有限公司 | Centralized water supply method integrating sewage reuse and sea water desalination |
| CN102718363A (en) * | 2012-06-21 | 2012-10-10 | 浙江晶泉水处理设备有限公司 | Coking wastewater comprehensive treatment method and system thereof |
| CN102745839A (en) * | 2012-07-31 | 2012-10-24 | 韦秋平 | Treatment method for removing ammonia nitrogen in waste water |
| CN102964003A (en) * | 2012-11-22 | 2013-03-13 | 中节能六合天融环保科技有限公司 | Method for treating ammonia nitrogen in wastewater by using integrated process |
| CN104150624A (en) * | 2014-07-01 | 2014-11-19 | 霖创环保科技(上海)有限公司 | Treatment method for recycling silicon wafer grinding wastewater in semiconductor industry |
| CN105236681A (en) * | 2015-10-13 | 2016-01-13 | 沈阳建筑大学 | Modularization treatment system and method for reinforcing quality of secondary effluent through active sludge backflow |
| CN106387908A (en) * | 2016-08-29 | 2017-02-15 | 王少琼 | Canned mesona chinensis and processing technology thereof |
| CN109626623A (en) * | 2017-10-09 | 2019-04-16 | 上海集承环保技术有限公司 | A kind for the treatment of process of cupric and ammonia nitrogen waste water |
| CN111517591A (en) * | 2020-06-11 | 2020-08-11 | 北京工业大学 | Device and method for treating oxidized nitrogen wastewater by using ferroalloy in combination with anaerobic ammonium oxidation bacteria |
| CN111573970A (en) * | 2020-05-06 | 2020-08-25 | 中南大学 | Method for treating coking wastewater by physicochemical and biochemical combination |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101767912B (en) * | 2010-01-20 | 2013-01-09 | 昆明钢铁控股有限公司 | Method for treating coking biochemical effluent by microwave-oxidation-coagulation technology |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1245146A (en) * | 1999-07-30 | 2000-02-23 | 山西省科林环境保护技术中心 | Process for treating waste water |
| CN1215996C (en) * | 2002-03-05 | 2005-08-24 | 陈平 | High-concentration ammonia nitrogen waste water treatment method |
| RU2261893C2 (en) * | 2003-07-17 | 2005-10-10 | Казанское открытое акционерное общество "Органический синтез" (КОАО "Органический синтез") | Method of realization of a process of a pyrolysis with recycling of a waste condensate of a steam of dilution |
| CN100526236C (en) * | 2004-07-15 | 2009-08-12 | 中国科学院成都有机化学有限公司 | Process for treating and recovering wastewater of coking |
| CN1803651A (en) * | 2006-01-12 | 2006-07-19 | 陈启松 | Zero-discharge coked wastewater treatment system |
-
2006
- 2006-12-30 CN CNB2006101709415A patent/CN100465110C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559349B (en) * | 2009-05-08 | 2011-04-27 | 济南大学 | Calcination-free zeolite filter material and preparation method thereof |
| CN102167477A (en) * | 2011-03-17 | 2011-08-31 | 开滦能源化工股份有限公司 | Recycle system and recycle method of coked wastewater |
| CN102173542A (en) * | 2011-03-21 | 2011-09-07 | 开滦能源化工股份有限公司 | Centralized water supply method integrating sewage reuse and sea water desalination |
| CN102718363B (en) * | 2012-06-21 | 2014-05-07 | 浙江晶泉水处理设备有限公司 | Coking wastewater comprehensive treatment method and system thereof |
| CN102718363A (en) * | 2012-06-21 | 2012-10-10 | 浙江晶泉水处理设备有限公司 | Coking wastewater comprehensive treatment method and system thereof |
| CN102745839A (en) * | 2012-07-31 | 2012-10-24 | 韦秋平 | Treatment method for removing ammonia nitrogen in waste water |
| CN102964003A (en) * | 2012-11-22 | 2013-03-13 | 中节能六合天融环保科技有限公司 | Method for treating ammonia nitrogen in wastewater by using integrated process |
| CN104150624A (en) * | 2014-07-01 | 2014-11-19 | 霖创环保科技(上海)有限公司 | Treatment method for recycling silicon wafer grinding wastewater in semiconductor industry |
| CN105236681A (en) * | 2015-10-13 | 2016-01-13 | 沈阳建筑大学 | Modularization treatment system and method for reinforcing quality of secondary effluent through active sludge backflow |
| CN106387908A (en) * | 2016-08-29 | 2017-02-15 | 王少琼 | Canned mesona chinensis and processing technology thereof |
| CN109626623A (en) * | 2017-10-09 | 2019-04-16 | 上海集承环保技术有限公司 | A kind for the treatment of process of cupric and ammonia nitrogen waste water |
| CN111573970A (en) * | 2020-05-06 | 2020-08-25 | 中南大学 | Method for treating coking wastewater by physicochemical and biochemical combination |
| CN111517591A (en) * | 2020-06-11 | 2020-08-11 | 北京工业大学 | Device and method for treating oxidized nitrogen wastewater by using ferroalloy in combination with anaerobic ammonium oxidation bacteria |
| CN111517591B (en) * | 2020-06-11 | 2022-05-24 | 北京工业大学 | Device and method for treating oxidized nitrogen wastewater by using ferroalloy and anaerobic ammonium oxidation bacteria |
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| CN100465110C (en) | 2009-03-04 |
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Granted publication date: 20090304 Termination date: 20101230 |