CN101544430A - Secondary treatment method of coking wastewater - Google Patents
Secondary treatment method of coking wastewater Download PDFInfo
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- CN101544430A CN101544430A CN200910026610A CN200910026610A CN101544430A CN 101544430 A CN101544430 A CN 101544430A CN 200910026610 A CN200910026610 A CN 200910026610A CN 200910026610 A CN200910026610 A CN 200910026610A CN 101544430 A CN101544430 A CN 101544430A
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Abstract
The invention discloses a secondary treatment method of coking wastewater. The method comprises the following steps: reclaimed water in a raw water tank is pressed by a raw water pump to enter a multi-medium filter and then enter a fine filter; the effluent of the fine filter sequentially enters a weak acid type cationic exchanger and a strong acid type cationic exchanger and then enters a carbon dioxide cleaner; the effluent enters a middle water tank and sequentially enters a weak base type anionic exchanger, a strong base type anionic exchanger and a mixed ion exchanger by the middle water pump after dissociative carbon dioxide is removed by the carbon dioxide cleaner; and finally, obtained yielding water enters a product water tank. The effluent treated by the method has good stability and excellent water quality, and the contents of various aqueous trace elements influencing the coke quality are greatly decreased, particularly the burning refinery coke quality, thereby further ensuring the quality of produced coke. The invention has small engineering floor area, high treatment efficiency, low operation energy consumption and high operation reliability, and the treated water can also be used as water supply for other technologies or places.
Description
Technical field
The present invention relates to a kind of treatment process of coke-oven waste water, belong to water-treatment technology field.
Background technology
Coke is the basic material of steel industry, and along with the quick growth of steel industry, the demand of domestic and international market STRENGTH ON COKE also increases substantially.But the waste water that produces in process of coking can cause severe contamination to environment, so coking enterprise is the enterprise of high pollution and refractory reason always.In Constructing Water-saved Society, build in the tide of green economy development, how carry out not only economy but also handle efficiently and can not pollute environment to producing the waste water that is produced in the coke process, be the problem that coal chemical enterprise is being studied always.The coke-oven waste water after the treatment and purification, be used for the quenching treatment process considerable approach of can yet be regarded as.The coking chemical enterprise of present domestic routine will be about 90% and adopt as the coke-oven waste water after the art breading such as A-A-O method, A-O-O method and SBR method is delivered to the coking workshop and done quenching and replenish water, and all the other waste water of 10% reach in " industrial water pollution thing emission standard " through advanced treatment and efflux with the clean waste water of production behind the coking industry primary standard.The waste water that is produced when producing coke is consumed in the extinguishing technique flow process voluntarily do not efflux, not only stopped to efflux contaminate environment, also improved the recirculation efficient of waste water, thereby also reduced cost of sewage disposal and water resources taxes.
Mainly removed phenols and the ammonia nitrogen class material in the waste water through the coke-oven waste water after the method primary treatment purifications such as sewage works employing A-A-O, used as the quenching water quality of metallurgical coke and foundry coke is had only slight influence, seriously influence but can cause to the quality of calcined petroleum coke.This is because calcined petroleum coke is restricted to the content of elements requirement, and the partial organic substances that contains in the waste water, suspended particle, colloid and various ion component all can produce bigger influence to the quality of calcined petroleum coke.For example can cause in the coke corresponding quality index also higher when the sodium ion in the waste water and calcium ion content are higher, higher meeting causes CO in the electrolytic aluminum user use as sodium ion
2The reactive quickening increases production cost; The higher aluminum products purity that easily causes of calcium ion descends, and influences quality product.
Summary of the invention
The object of the present invention is to provide a kind of secondary treatment method of coke-oven waste water, utilize this method can with contained in the coke-oven waste water after purifying through primary treatment influence coke quality especially the micronutrient levels of calcined petroleum coke quality further reduce greatly, thereby the coke quality that further assurance is produced, the water after handling simultaneously also can be used as the supply water in other technologies or place.This method technology is simple, easy to operate simultaneously, is easy to management.
The present invention can be achieved by the following technical programs.
A kind of secondary treatment method of coke-oven waste water, comprise the steps: the middle water in the raw water box is entered more medium filter after the raw water pump pressurization, enter accurate filter then, the water outlet of accurate filter enters weak-type, strong-acid type cation interchanger more successively, water outlet enters carbon dioxide cleaner again, water outlet after carbon dioxide cleaner is removed free carbon dioxide enters intermediate water tank again, the intermediate water tank water outlet enters weak base type, strong base anion exchanger and mixed ion exchanger successively through middle water pump, and the product water that obtains at last enters the product water tank.
Middle water in the described raw water box is the phenols mainly removed after sewage works adopts method such as A-A-O to purify through primary treatment wherein and the coke-oven waste water of ammonia nitrogen class material.
The secondary treatment method of above-mentioned a kind of coke-oven waste water, wherein, described raw water box is controlled at 45m with flooding velocity
3/ h.
The secondary treatment method of above-mentioned a kind of coke-oven waste water wherein, adds flocculation agent in the suction culvert of more medium filter, out of service when delivery turbidity reaches 0.05MPa greater than 5mg/L or inlet and outlet pressure difference, carries out backwash.The main effect of more medium filter is to remove the suspended substance in the water, the small organic molecule and the part colloid of process coagulation, and other mechanical impuritys.The flocculation agent that adds is aluminium chlorohydroxide or polyacrylamide.
The secondary treatment method of above-mentioned a kind of coke-oven waste water, wherein, described accurate filter is a Stainless Steel Filter, built-in PPF filter core, filtering accuracy 5 μ m.Can remove various solid impurities; reduce of the influence of various solid impurities to ion exchange resin; promptly the protectiveness that is used for ion-exchanger as security personnel's strainer is filtered, to prevent that the prime filter plant from breaking down or effect is carried out further filtration treatment to water when not ideal enough.
Weak-type, two cation exchanger series connection of strong acid type regeneration can reduce the acid consumption, have reduced sodium ion and other cations in the water, have improved the pH value of regeneration waste liquid.
Carbon dioxide cleaner is used for removing water free carbonic acid gas, reduces alkalinity of water.
Intermediate water tank is used to store the water outlet of carbon dioxide cleaner, and as the feed-tank of subsequent processing device, guarantees the continous-stable operation of subsequent delivery and treatment facility.
Weak base type, two anion exchanger series connection of strong base regeneration reduce alkaline consumption, have removed SO in the water
4 2-, CN
-Etc. most of negatively charged ion, reduced the pH value of regeneration waste liquid.
Mixed ion exchanger is about to anion-cation exchange resin and is placed in the same interchanger, and before operation that mixed with resin is even, and it can be regarded as by many yin and yang resins and is staggered and the multiple bed of the multi-stage type formed.Because yin and yang resin mixes, the permutoid reaction of zwitterion is almost carried out simultaneously, the SO in the water
4 2-, CN
-And Ca
2+, Na
+, Mg
2+Plasma content reduces greatly, reduced total saltiness, and the hydroxide ion that hydrogen ion that the Hydrogen cationic exchange is produced and the anionresin of hydrogen-oxygen type are produced can not form accumulation, basically eliminated Influence of Counterion, permutoid reaction is carried out very thoroughly, the pH value of producing water is 6-8, the effluent quality height.
The remarkable advantage that adopts treatment process provided by the invention to have is:
1, stable water outlet is good, and effluent quality is good, influence in the water coke quality especially each micronutrient levels of calcined petroleum coke quality reduce greatly, reached the requirement of coke production.
2, this programme is selected maturation, advanced person's Filtration Adsorption and ion exchange process flow process for use, and each process section is connected mutually, replenishes mutually, reaches omnidistance optimization; Regeneration waste liquid and backwash water are through the pipeline into waste water station circular treatment that refluxes, and the anion exchanger regeneration waste liquid discharges behind broken cyanide.
3, the project occupation of land area is little, the processing efficiency height, operation energy consumption is low, working cost is low, invest lower, the serviceability height, it is strong that water quantity and quality is changed adaptability; Water after art breading of the present invention can be used as the feedwater in other technologies or place, and the specified processing power of water treatment system is 45T/H.
4, method technology of the present invention is succinct, easy to operate, is easy to management.
Description of drawings
Fig. 1 is the process flow sheet of the secondary treatment method of coke-oven waste water of the present invention.
Embodiment
As Fig. 1.
Middle water enters raw water box, and raw water box plays a part to regulate and regime flow, and flooding velocity is controlled at 45m
3/ h.The raw water box water outlet enters more medium filter after the raw water pump pressurization, in the suction culvert of more medium filter, add aluminium chlorohydroxide, play the coagulating sedimentation effect, removed suspended particulate and the colloid in the water, reduced the turbidity of water, out of service when delivery turbidity reaches 0.05MPa greater than 5mg/L or inlet and outlet pressure difference, carry out backwash.The water outlet of more medium filter enters accurate filter.Accurate filter can be removed various solid impurities, reduces the influence of various solid impurities to ion exchange resin.The water outlet of accurate filter enters the weak-type cation exchanger, enters the strong-acid type cation interchanger again, displaces most of positively charged ion.Carbon dioxide cleaner is advanced in water outlet again, removes the free carbonic acid gas, reduces alkalinity of water.The carbon dioxide cleaner water outlet enters intermediate water tank, and intermediate water tank stores the carbon dioxide cleaner water outlet and as the feed-tank of subsequent processing device, guarantees the continous-stable operation of subsequent delivery and treatment facility.The intermediate water tank water outlet is advanced weak base type anion exchanger through middle water pump, advance the strong base anion exchanger again, remove most of negatively charged ion in the water, water outlet enters mixed ion exchanger at last, reduced ion content total in the water, reduced total salinity simultaneously, the pH value of producing water at last is 6-8, make effluent quality reach service requirements, it is standby that product water advances the product water tank.
Be the water quality contrast before and after art breading of the present invention below:
| Sequence number | Pollution factor | Concentration (mg/L) before handling | Handle back concentration (mg/L) |
| 1 | Suspended substance | 85 | <55 |
| 2 | CN - | 1-10 | ≤0.5 |
| 3 | COD | 128 | 60 |
| 4 | Sodium ion | 900 | <100 |
| 5 | Calcium ion | 400 | <250 |
Claims (4)
1, a kind of secondary treatment method of coke-oven waste water, it is characterized in that, comprise the steps: the middle water in the raw water box is entered more medium filter after the raw water pump pressurization, enter accurate filter then, the water outlet of accurate filter enters weak-type, strong-acid type cation interchanger more successively, water outlet enters carbon dioxide cleaner again, water outlet after carbon dioxide cleaner is removed free carbon dioxide enters intermediate water tank again, the intermediate water tank water outlet enters weak base type, strong base anion exchanger and mixed ion exchanger successively through middle water pump, and the product water that obtains at last enters the product water tank.
2, the secondary treatment method of a kind of coke-oven waste water as claimed in claim 1 is characterized in that, described raw water box is controlled at 45m with flooding velocity
3/ h.
3, the secondary treatment method of a kind of coke-oven waste water as claimed in claim 1 is characterized in that, adds flocculation agent in the suction culvert of more medium filter, and is out of service when delivery turbidity reaches 0.05MPa greater than 5mg/L or inlet and outlet pressure difference, carries out backwash.
4, the secondary treatment method of a kind of coke-oven waste water as claimed in claim 1 is characterized in that, described accurate filter is a Stainless Steel Filter, built-in PPF filter core, filtering accuracy 5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100266108A CN101544430B (en) | 2009-05-05 | 2009-05-05 | Secondary treatment method of coking wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100266108A CN101544430B (en) | 2009-05-05 | 2009-05-05 | Secondary treatment method of coking wastewater |
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| Publication Number | Publication Date |
|---|---|
| CN101544430A true CN101544430A (en) | 2009-09-30 |
| CN101544430B CN101544430B (en) | 2011-06-08 |
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ID=41191842
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100266108A Expired - Fee Related CN101544430B (en) | 2009-05-05 | 2009-05-05 | Secondary treatment method of coking wastewater |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011452A (en) * | 2012-12-07 | 2013-04-03 | 上海瑞勇实业有限公司 | High efficiency ion exchange electroplating wastewater reuse treatment system |
| WO2013078639A1 (en) * | 2011-11-30 | 2013-06-06 | Rohm And Haas Company | Coking wastewater treatment |
| CN103739114A (en) * | 2013-12-27 | 2014-04-23 | 陕西大唐新能电力设计有限公司 | Boiler water treatment system |
| CN104276711A (en) * | 2014-10-29 | 2015-01-14 | 上海水合环境工程有限公司 | Reverse osmosis membrane treatment process for recycling industrial sewage and realizing zero release |
| CN106587450A (en) * | 2016-12-15 | 2017-04-26 | 贵州芭田生态工程有限公司 | Treatment system and treatment method for calcium ammonium nitrate production wastewater |
| CN107235533A (en) * | 2017-06-27 | 2017-10-10 | 郑泽 | A kind of method that resin combination chromatography removes heavy metal in waste water |
| CN107500446A (en) * | 2016-06-14 | 2017-12-22 | 贵州芭田生态工程有限公司 | The processing system and processing method of Phosphate Fertilizer Production waste water |
-
2009
- 2009-05-05 CN CN2009100266108A patent/CN101544430B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013078639A1 (en) * | 2011-11-30 | 2013-06-06 | Rohm And Haas Company | Coking wastewater treatment |
| CN104024168A (en) * | 2011-11-30 | 2014-09-03 | 罗门哈斯公司 | Coking wastewater treatment |
| JP2015504368A (en) * | 2011-11-30 | 2015-02-12 | ローム アンド ハース カンパニーＲｏｈｍ Ａｎｄ Ｈａａｓ Ｃｏｍｐａｎｙ | Coke wastewater treatment |
| RU2577379C1 (en) * | 2011-11-30 | 2016-03-20 | Ром Энд Хаас Компани | Treatment of sewage water from coking |
| CN103011452A (en) * | 2012-12-07 | 2013-04-03 | 上海瑞勇实业有限公司 | High efficiency ion exchange electroplating wastewater reuse treatment system |
| CN103011452B (en) * | 2012-12-07 | 2014-05-28 | 上海瑞勇实业有限公司 | High efficiency ion exchange electroplating wastewater reuse treatment system |
| CN103739114A (en) * | 2013-12-27 | 2014-04-23 | 陕西大唐新能电力设计有限公司 | Boiler water treatment system |
| CN104276711A (en) * | 2014-10-29 | 2015-01-14 | 上海水合环境工程有限公司 | Reverse osmosis membrane treatment process for recycling industrial sewage and realizing zero release |
| CN107500446A (en) * | 2016-06-14 | 2017-12-22 | 贵州芭田生态工程有限公司 | The processing system and processing method of Phosphate Fertilizer Production waste water |
| CN106587450A (en) * | 2016-12-15 | 2017-04-26 | 贵州芭田生态工程有限公司 | Treatment system and treatment method for calcium ammonium nitrate production wastewater |
| CN107235533A (en) * | 2017-06-27 | 2017-10-10 | 郑泽 | A kind of method that resin combination chromatography removes heavy metal in waste water |
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| Publication number | Publication date |
|---|---|
| CN101544430B (en) | 2011-06-08 |
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Address after: 212114 Gao Zhen, Dantu Economic Development Zone, Zhenjiang, Jiangsu Patentee after: SINOCHEM ZHENJIANG COKING CO., LTD. Address before: 212114 Gao Zhen, Dantu Economic Development Zone, Zhenjiang, Jiangsu Patentee before: Sinochem Zhenjiang Coking Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20110608 Termination date: 20170505 |