CN103466885A - Process for treating wastewater generated in solar silicon wafer production process - Google Patents
Process for treating wastewater generated in solar silicon wafer production process Download PDFInfo
- Publication number
- CN103466885A CN103466885A CN2013104141409A CN201310414140A CN103466885A CN 103466885 A CN103466885 A CN 103466885A CN 2013104141409 A CN2013104141409 A CN 2013104141409A CN 201310414140 A CN201310414140 A CN 201310414140A CN 103466885 A CN103466885 A CN 103466885A
- Authority
- CN
- China
- Prior art keywords
- waste water
- wastewater
- solar silicon
- water
- production process
- 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
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
-
- 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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a process for treating wastewater generated in a solar silicon wafer production process and relates to wastewater treatment in the field of the electronic semiconductor industry. The process comprises the following steps of: pretreating wastewater in a preliminary sedimentation tank; carrying out Fenton and iron-carbon micro-electrolysis combined oxidization reaction on the wastewater in an iron-carbon micro-electrolysis reactor; after the reaction, feeding the wastewater into a coagulation-sedimentation integrated pool, feeding PAC (Poly Aluminium Chloride) and PAM (Poly Acryl Amide) to arouse the coagu-flocculation reaction of the wastewater, and after the reaction, performing sludge-water separation on the wastewater; causing the supernate to flow to a hydrolysis acidification pool, and then causing the wastewater to flow to a contact oxidation tank; causing the mixed liquid to flow to a secondary sedimentation tank for sludge-water separation, while causing the supernate to flow to a deflection sedimentation pool, and feeding PAC for purifying water so that the supernate is up to the stand and can be discharged after sedimentation; finally, performing concentration treatment on sludge. After non-degradable organic wastewater is treated by the process provided by the invention, the BOD5 (Biological Oxygen Demand)/CODcr (Chemical Oxygen Demand) ratio of the wastewater is obviously increased.
Description
Technical field
The present invention relates to the processing of electronic semi-conductor's industrial circle waste water, the treatment process of the waste water that specifically a kind of solar silicon wafers production process produces.
Background technology
Polysilicon is the key foundation material of manufacturing integration circuit, photovoltaic solar cell, is the important foundation stone of national development information industry and photovoltaic New Energy Industry.Yet in process of production, production of polysilicon enterprise produces the trade effluent of a large amount of complicated components, as do not processed well, the severe contamination water body that is bound to, harm environment.Therefore, how process for producing waste water becomes the production of polysilicon corporate environment is administered key subjects that must solve.
Waste water, mainly from polysilicon section waste water and organosilicon Cleaning Wastewater, owing to needing that in process of production the strong acid such as hydrofluoric acid, chromic acid, nitric acid, hydrochloric acid for silicon-containing material are carried out to suitable corrosion, therefore produces a large amount of fluoric-containing acid alkali waste waters.Such useless water ph value is low, and fluorine content is high, and contains a certain amount of colourity and suspended substance, and the vary within wide limits of the water yield, water quality, and intractability is large.After conventional process, the poisonous and harmful metal ion of water outlet, fluorine etc. can not stably reaching standards, and the pollution that water resource environment is caused is day by day serious.
Summary of the invention
The treatment process of the waste water that the object of the present invention is to provide a kind of solar silicon wafers production process to produce.
Purpose of the present invention can be achieved through the following technical solutions:
The treatment process of the waste water that a kind of solar silicon wafers production process produces, is characterized in that, comprises the following steps:
(1) waste water enters preliminary sedimentation tank, and the macrobead thing carries out preliminary precipitation, then by the preliminary sedimentation tank water side, enters equalizing tank, and homogeneous is all measured;
(2) step (1) waste water enters the iron-carbon micro-electrolysis reactor by tube mixer, adds the sulphur acid for adjusting pH at 3-3.5, then adds H2O2, and Fenton and the reaction of iron-carbon micro-electrolysis co-oxidation occur in iron carbon microreactor;
(3) the reacted waste water of step (2) enters the coagulating sedimentation integrated pond, and the feeding lime breast is regulated pH to neutral, adds successively PAC, PAM waste water is carried out to coagulating, and after reaction, waste water carries out mud-water separation;
(4) supernatant liquor of step (3) mud-water separation flow to hydrolysis acidification pool, and microorganism contacts with organism and produces the acidication reaction, and rear wastewater streams is to contact-oxidation pool, and aerobic biologic membrane carries out oxide treatment to organism in waste water;
(5) step (4) mixed solution flow to second pond and carries out mud-water separation, and supernatant liquor flow to the baffling settling tank, adds PAC and purifies water, after precipitation the supernatant liquor qualified discharge;
(6) sediment in preliminary sedimentation tank, coagulating sedimentation integrated pond, baffling settling tank all enters sludge thickener, second pond mud enters sludge thickener, the sludge thickener supernatant liquor returns the equalizing tank circulation, thickened sludge is squeezed into chamber filter press by sludge pump, press filtration mud is transported to and reclaims the unit recycling, and filtrate is returned equalizing tank.
Be provided with the iron carbon filler in described iron-carbon micro-electrolysis reactor, described iron-carbon micro-electrolysis reactor bottom arranges aerating apparatus.
In described second pond, sludge part enters sludge thickener, and a part enters hydrolysis acidification pool and circulated in addition.
Be provided with filler and aerating apparatus in described contact-oxidation pool, increase oxygen content in contact-oxidation pool, aerobic biologic membrane fully and organism carry out oxidizing reaction.
Described coagulating sedimentation integrated pond front end arranges the coagulating groove, rear end arranges tilted plate separator, regulate pH value at coagulating groove feed-water end feeding lime breast and be neutral, and add PAC successively, PAM mixes flocculation reaction to waste water, reacted waste water carries out mud-water separation from flowing to tilted plate separator.
In described step (2), sulfuric acid concentration is 50%, and described H2O2 concentration is 30%.
In described step (2), PAC, PAM concentration are 0.1～0.3%.
PAC dosage 3-6mg/L in described step (5).
Beneficial effect of the present invention:
1, have advantages of be swift in response, the temperature and pressure reaction conditions relaxes and non-secondary pollution etc. is outstanding.
2, after treatment, BOD5/CODcr ratio, be significantly improved the organic waste water of difficult degradation.
3, do not need strict anaerobic condition, process operation is more stable, to envrionment temperature between 15-35 ℃, not very sensitive in the variation range of pH between 6.5～9.0, convenient operation is controlled.
4, relative anaerobic treatment, hydraulic detention time is short, and to the organic pollutant in sewage, hydrolysis reaction generally just can complete at 4-12h.Required reactor volume is less, and construction investment is few.
5, the reproduction speed of hydrolysis and acid-producing bacteria is faster than methanogen, and the domestication incubation time is shorter.
6, there is diversity of organism.Biomass is many, and the biomass in unit volume reaches 5～20 times than mud fado, so the processing power of equipment is large; Surplus sludge volume is few, and operational management is more convenient.
7, because oxygenation is direct aeration under filler, bubble again breaks and has improved oxygen-transfer efficiency by filler, therefore its power consumption wants specific activity mud method little.
The accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
The waste water quality index that certain solar energy production factory discharges: pH:7.56; CODcr:3000 mg/l; SS:650mg/l.
Treatment process of the present invention is:
As shown in Figure 1, the factory effluent gravity flow enters preliminary sedimentation tank, the particulate matter that proportion is larger than water is carried out preliminary precipitation, then waste water is squeezed into equalizing tank in the preliminary sedimentation tank water side by pump, waste water is after in equalizing tank, homogeneous is all measured, by pump, promoted via entering the iron-carbon micro-electrolysis reactor after tube mixer, add the sulfuric acid that concentration is 50% and count the regulating and controlling pH value in 3.5 left and right by online digital display PH at the tube mixer front end, rear end adds the H2O2 that concentration is 30%, Fenton and the reaction of iron-carbon micro-electrolysis co-oxidation as catalyzer by Fe2+ occur in the iron-carbon micro-electrolysis reactor, the iron carbon filler is set in the iron-carbon micro-electrolysis reactor, bottom arranges aerating apparatus, prevent Fe-C plate knot in reactor by aeration, it is integrated that reacted waste water enters coagulating sedimentation, the integrated front end of coagulating sedimentation arranges the coagulating groove, rear end arranges tilted plate separator, regulate pH value at coagulating groove feed-water end feeding lime breast and be neutral, and add successively the PAC that concentration is 0.1～0.3%, PAM mixes flocculation reaction to waste water, reacted waste water carries out mud-water separation from flowing to tilted plate separator, supernatant liquor is from flowing into hydrolysis acidification pool.
The built-in diving mixer of hydrolysis acidification pool and active sludge, produce the acidication reaction by microorganism with organic the contact, then waste water gravity flow enters contact-oxidation pool, establish elastic filler and aerating apparatus in contact-oxidation pool, pass through aeration, utilize aerobic biologic membrane to carry out oxide treatment to the organism in waste water, reacted mixed solution carries out mud-water separation from flowing into second pond, supernatant liquor is from flowing into the baffling settling tank, add PAC at feed-water end, PAC dosage 3-6mg/L, further to purify effluent quality, supernatant liquor qualified discharge after precipitation.
Sediment in preliminary sedimentation tank, coagulation integrated pond, baffling settling tank enters sludge thickener, in second pond, mud enters sludge thickener, the sludge thickener supernatant liquor loops back equalizing tank, thickened sludge is squeezed into chamber filter press by sludge pump, press filtration mud is transported to and reclaims the unit recycling, and filtrate is returned equalizing tank.
Effluent quality after the present invention processes: PH=6～9; CODcr≤350 mg/l; SS≤400 mg/l.
BOD5/CODCr ratio has been brought up to 0.472-0.538 by 0.311-0.366, and 16.1-17.2 percentage point has risen.
Table 1 is each section effluent quality index of the present invention (unit is all with mg/L)
Above content is only to technique example of the present invention and explanation; affiliated those skilled in the art make various modifications to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the technique of invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (8)
1. the treatment process of the waste water of a solar silicon wafers production process generation, is characterized in that, comprises the following steps:
(1) waste water enters preliminary sedimentation tank, and the macrobead thing carries out preliminary precipitation, then by the preliminary sedimentation tank water side, enters equalizing tank, and homogeneous is all measured;
(2) step (1) waste water enters the iron-carbon micro-electrolysis reactor by tube mixer, adds the sulphur acid for adjusting pH at 3-3.5, then adds H2O2, and Fenton and the reaction of iron-carbon micro-electrolysis co-oxidation occur in iron carbon microreactor;
(3) the reacted waste water of step (2) enters the coagulating sedimentation integrated pond, and the feeding lime breast is regulated pH to neutral, adds successively PAC, PAM waste water is carried out to coagulating, and after reaction, waste water carries out mud-water separation;
(4) supernatant liquor of step (3) mud-water separation flow to hydrolysis acidification pool, and microorganism contacts with organism and produces the acidication reaction, and rear wastewater streams is to contact-oxidation pool, and aerobic biologic membrane carries out oxide treatment to organism in waste water;
(5) step (4) mixed solution flow to second pond and carries out mud-water separation, and supernatant liquor flow to the baffling settling tank, adds PAC and purifies water, after precipitation the supernatant liquor qualified discharge;
(6) sediment in preliminary sedimentation tank, coagulating sedimentation integrated pond, baffling settling tank all enters sludge thickener, second pond mud enters sludge thickener, the sludge thickener supernatant liquor returns the equalizing tank circulation, thickened sludge is squeezed into chamber filter press by sludge pump, press filtration mud is transported to and reclaims the unit recycling, and filtrate is returned equalizing tank.
2. the treatment process of the waste water that solar silicon wafers production process according to claim 1 produces is characterized in that be provided with the iron carbon filler in described iron-carbon micro-electrolysis reactor, described iron-carbon micro-electrolysis reactor bottom arranges aerating apparatus.
3. the treatment process of the waste water that solar silicon wafers production process according to claim 1 produces is characterized in that in described second pond, sludge part enters sludge thickener, and a part enters hydrolysis acidification pool and circulated in addition.
4. the treatment process of the waste water that solar silicon wafers production process according to claim 1 produces, it is characterized in that, be provided with filler and aerating apparatus in described contact-oxidation pool, increase oxygen content in contact-oxidation pool, aerobic biologic membrane fully and organism carry out oxidizing reaction.
5. the treatment process of the waste water that solar silicon wafers production process according to claim 1 produces, it is characterized in that, described coagulating sedimentation integrated pond front end arranges the coagulating groove, rear end arranges tilted plate separator, regulate pH value at coagulating groove feed-water end feeding lime breast and be neutral, and add PAC successively, PAM mixes flocculation reaction to waste water, reacted waste water carries out mud-water separation from flowing to tilted plate separator.
6. the treatment process of the waste water that solar silicon wafers production process according to claim 1 produces is characterized in that in described step (2), sulfuric acid concentration is 50%, and described H2O2 concentration is 30%.
7. the treatment process of the waste water that solar silicon wafers production process according to claim 1 produces is characterized in that in described step (2), PAC, PAM concentration are 0.1～0.3%.
8. the treatment process of the waste water that solar silicon wafers production process according to claim 1 produces, is characterized in that, PAC dosage 3-6mg/L in described step (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104141409A CN103466885A (en) | 2013-09-12 | 2013-09-12 | Process for treating wastewater generated in solar silicon wafer production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104141409A CN103466885A (en) | 2013-09-12 | 2013-09-12 | Process for treating wastewater generated in solar silicon wafer production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103466885A true CN103466885A (en) | 2013-12-25 |
Family
ID=49791973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104141409A Pending CN103466885A (en) | 2013-09-12 | 2013-09-12 | Process for treating wastewater generated in solar silicon wafer production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103466885A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104058553A (en) * | 2014-06-24 | 2014-09-24 | 中国石油集团工程设计有限责任公司 | Treatment process of mercury-containing production waste water from exploitation of natural gas field |
| CN104355503A (en) * | 2014-11-21 | 2015-02-18 | 普帝龙集成房屋科技有限公司 | Domestic wastewater treatment method without need of repeatedly adding microbial strain and domestic wastewater treatment system using same |
| CN104961304A (en) * | 2015-07-15 | 2015-10-07 | 大连世达特环保科技有限公司 | High-concentration fluorine chemical wastewater treatment technology |
| CN105084514A (en) * | 2015-08-12 | 2015-11-25 | 刘姝 | Sewage treatment system based on organic-matter photocatalytic oxidative decomposition |
| CN105293842A (en) * | 2015-12-04 | 2016-02-03 | 新蔡县青奎环保设备能源工程有限公司 | Process for treating fecal sewage in culture pond |
| CN105347549A (en) * | 2015-11-09 | 2016-02-24 | 中油辽河工程有限公司 | Device for processing thickened oil produced water by utilization of composite advanced oxidation process and technology |
| CN105923925A (en) * | 2016-06-24 | 2016-09-07 | 江苏中宜金大环保产业技术研究院有限公司 | High-COD (Chemical Oxygen Demand) fine-silicon-powder-containing wastewater treatment device and method |
| CN106396294A (en) * | 2016-12-06 | 2017-02-15 | 大同新成新材料股份有限公司 | Treatment method of lithium battery electrolyte cask washing wastewater |
| CN106865880A (en) * | 2015-12-14 | 2017-06-20 | 中南大学 | The materialization of high concentration pyrosulfurous acid salt organic waste water-bio combined processing method |
| CN107698098A (en) * | 2017-10-11 | 2018-02-16 | 浙江新安化工集团股份有限公司 | A kind of organic silicon wastewater processing system and its processing method |
| CN108238699A (en) * | 2016-12-24 | 2018-07-03 | 东莞市金羽丰知识产权服务有限公司 | A kind of processing method that organic wastewater is electroplated |
| CN109399867A (en) * | 2018-12-11 | 2019-03-01 | 江西蓝星星火有机硅有限公司 | A kind of biochemical processing method of organic silicon wastewater |
| CN109516634A (en) * | 2017-09-15 | 2019-03-26 | 南京美克斯精密机械有限公司 | A kind of processing method of intermetallic composite coating fluoride waste |
| CN110563197A (en) * | 2019-08-30 | 2019-12-13 | 上海洗霸科技股份有限公司 | Recycling and reusing treatment system and process for polycrystalline silicon cleaning wastewater |
| CN111039511A (en) * | 2019-12-30 | 2020-04-21 | 何亚婷 | Modularized integrated process method for treating chemical recovered wastewater |
| CN113548773A (en) * | 2021-08-09 | 2021-10-26 | 东华工程科技股份有限公司 | Industrial park wastewater pretreatment method and system |
| CN113816561A (en) * | 2021-08-26 | 2021-12-21 | 杭州永邦环保科技有限公司 | Treatment method of quaternary ammonium salt production wastewater |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030077198A (en) * | 2002-03-25 | 2003-10-01 | 한상배 | Advanced Waste Water Treatment System with Intermittent Aeration, Biofilm and Bio Absorption |
| CN1587111A (en) * | 2004-09-10 | 2005-03-02 | 徐冰珍 | Discharging technology for livestock feces sewage treatment to reach standard |
| CN1631818A (en) * | 2003-12-23 | 2005-06-29 | 何义亮 | Organic waste water treatment process |
| CN1830845A (en) * | 2006-03-17 | 2006-09-13 | 江阴市倪家巷化工有限公司 | Treatment technology of p-aminotoluene waste water |
| CN101381185A (en) * | 2008-07-21 | 2009-03-11 | 北京桑德环保集团有限公司 | Denitrification processing method of coking wastewater and processing arrangement |
| CN101602564A (en) * | 2009-07-21 | 2009-12-16 | 南京大学 | A kind of treatment process of coking chemical waste water |
| CN102173539A (en) * | 2011-03-15 | 2011-09-07 | 浙江环科环境研究院有限公司 | Device and process for processing high-salt non-biodegradable toxic industrial waste water |
| CN102627374A (en) * | 2012-03-29 | 2012-08-08 | 安徽省天虹绿洲环保科技有限公司 | Treatment process for high-concentration methanol and ammonia nitrogen wastewater produced in production process of quaternary ammonium salt |
| CN103112994A (en) * | 2013-02-06 | 2013-05-22 | 上海问鼎环保科技有限公司 | Method for treating pesticide wastewater |
-
2013
- 2013-09-12 CN CN2013104141409A patent/CN103466885A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030077198A (en) * | 2002-03-25 | 2003-10-01 | 한상배 | Advanced Waste Water Treatment System with Intermittent Aeration, Biofilm and Bio Absorption |
| CN1631818A (en) * | 2003-12-23 | 2005-06-29 | 何义亮 | Organic waste water treatment process |
| CN1587111A (en) * | 2004-09-10 | 2005-03-02 | 徐冰珍 | Discharging technology for livestock feces sewage treatment to reach standard |
| CN1830845A (en) * | 2006-03-17 | 2006-09-13 | 江阴市倪家巷化工有限公司 | Treatment technology of p-aminotoluene waste water |
| CN101381185A (en) * | 2008-07-21 | 2009-03-11 | 北京桑德环保集团有限公司 | Denitrification processing method of coking wastewater and processing arrangement |
| CN101602564A (en) * | 2009-07-21 | 2009-12-16 | 南京大学 | A kind of treatment process of coking chemical waste water |
| CN102173539A (en) * | 2011-03-15 | 2011-09-07 | 浙江环科环境研究院有限公司 | Device and process for processing high-salt non-biodegradable toxic industrial waste water |
| CN102627374A (en) * | 2012-03-29 | 2012-08-08 | 安徽省天虹绿洲环保科技有限公司 | Treatment process for high-concentration methanol and ammonia nitrogen wastewater produced in production process of quaternary ammonium salt |
| CN103112994A (en) * | 2013-02-06 | 2013-05-22 | 上海问鼎环保科技有限公司 | Method for treating pesticide wastewater |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104058553A (en) * | 2014-06-24 | 2014-09-24 | 中国石油集团工程设计有限责任公司 | Treatment process of mercury-containing production waste water from exploitation of natural gas field |
| CN104355503B (en) * | 2014-11-21 | 2016-03-02 | 普帝龙集成房屋科技有限公司 | A kind of without the need to repeating domestic sewage processing method and the treatment system thereof of adding bacterial classification |
| CN104355503A (en) * | 2014-11-21 | 2015-02-18 | 普帝龙集成房屋科技有限公司 | Domestic wastewater treatment method without need of repeatedly adding microbial strain and domestic wastewater treatment system using same |
| CN104961304A (en) * | 2015-07-15 | 2015-10-07 | 大连世达特环保科技有限公司 | High-concentration fluorine chemical wastewater treatment technology |
| CN105084514A (en) * | 2015-08-12 | 2015-11-25 | 刘姝 | Sewage treatment system based on organic-matter photocatalytic oxidative decomposition |
| CN105347549A (en) * | 2015-11-09 | 2016-02-24 | 中油辽河工程有限公司 | Device for processing thickened oil produced water by utilization of composite advanced oxidation process and technology |
| CN105293842A (en) * | 2015-12-04 | 2016-02-03 | 新蔡县青奎环保设备能源工程有限公司 | Process for treating fecal sewage in culture pond |
| CN106865880A (en) * | 2015-12-14 | 2017-06-20 | 中南大学 | The materialization of high concentration pyrosulfurous acid salt organic waste water-bio combined processing method |
| CN105923925A (en) * | 2016-06-24 | 2016-09-07 | 江苏中宜金大环保产业技术研究院有限公司 | High-COD (Chemical Oxygen Demand) fine-silicon-powder-containing wastewater treatment device and method |
| CN105923925B (en) * | 2016-06-24 | 2019-03-05 | 江苏中宜金大环保产业技术研究院有限公司 | A kind of high COD wastewater treatment equipment containing fine silica powder and processing method |
| CN106396294A (en) * | 2016-12-06 | 2017-02-15 | 大同新成新材料股份有限公司 | Treatment method of lithium battery electrolyte cask washing wastewater |
| CN108238699A (en) * | 2016-12-24 | 2018-07-03 | 东莞市金羽丰知识产权服务有限公司 | A kind of processing method that organic wastewater is electroplated |
| CN109516634A (en) * | 2017-09-15 | 2019-03-26 | 南京美克斯精密机械有限公司 | A kind of processing method of intermetallic composite coating fluoride waste |
| CN107698098A (en) * | 2017-10-11 | 2018-02-16 | 浙江新安化工集团股份有限公司 | A kind of organic silicon wastewater processing system and its processing method |
| CN109399867A (en) * | 2018-12-11 | 2019-03-01 | 江西蓝星星火有机硅有限公司 | A kind of biochemical processing method of organic silicon wastewater |
| CN109399867B (en) * | 2018-12-11 | 2022-01-28 | 江西蓝星星火有机硅有限公司 | Biochemical treatment method of organic silicon wastewater |
| CN110563197A (en) * | 2019-08-30 | 2019-12-13 | 上海洗霸科技股份有限公司 | Recycling and reusing treatment system and process for polycrystalline silicon cleaning wastewater |
| CN111039511A (en) * | 2019-12-30 | 2020-04-21 | 何亚婷 | Modularized integrated process method for treating chemical recovered wastewater |
| CN111039511B (en) * | 2019-12-30 | 2022-07-22 | 深圳市睿维盛环保科技有限公司 | Modularized integrated process method for treating chemical recovered wastewater |
| CN113548773A (en) * | 2021-08-09 | 2021-10-26 | 东华工程科技股份有限公司 | Industrial park wastewater pretreatment method and system |
| CN113816561A (en) * | 2021-08-26 | 2021-12-21 | 杭州永邦环保科技有限公司 | Treatment method of quaternary ammonium salt production wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103466885A (en) | Process for treating wastewater generated in solar silicon wafer production process | |
| CN108017223A (en) | A kind of steroid pharmacy wastewater treatment method | |
| CN106315977B (en) | A kind of printing-dyeing waste water treatment process | |
| CN109205954A (en) | Light electrolysis catalysis oxidation, biochemical treatment high-concentration waste hydraulic art | |
| CN202089870U (en) | Biological treatment device for hydroxyethyl cellulose industrial waste water | |
| CN102786184A (en) | Two-stage A / O-MBR denitrification and dephosphorization apparatus | |
| CN110818036A (en) | Method for advanced treatment of papermaking wastewater by combining reinforced iron-carbon micro-electrolysis with persulfate | |
| CN103435233A (en) | Equipment and method for recycling chemical fiber continuous-spinning wastewater | |
| CN104016550B (en) | Sewage water treatment method in Apparel Manufacturing | |
| CN109912145B (en) | Aerobic granular sludge power generation device | |
| CN101693576B (en) | Technology for rapidly treating domestic sewage discharged without residual mud by second-stage adsorption | |
| CN113955899A (en) | Efficient paint production wastewater treatment system and process | |
| CN104261561A (en) | Sequencing batch reactor activated sludge process (SBR) with low yield of sludge and low energy consumption | |
| CN109437447A (en) | A kind of preprocess method of guanine waste water | |
| CN105600930A (en) | Nitrogen and phosphorus removal electricity generator | |
| CN116693112A (en) | Treatment method of landfill leachate with low carbon nitrogen ratio | |
| CN105984991B (en) | A kind of sewerage advanced treatment process | |
| CN116495923A (en) | System and process for treating high ammonia nitrogen wastewater in pharmaceutical industry | |
| CN103304076A (en) | Catalytic micro-electrolysis water treatment equipment and process method thereof | |
| CN115477388A (en) | Ammonium nitrate wastewater treatment device and method | |
| CN102910771B (en) | Treatment method for high-concentration phosphorous waste water | |
| CN203295291U (en) | Catalytic micro-electrolysis water treatment equipment | |
| CN204958650U (en) | Hydrolytic acidification -AO - deposits integration reaction tank | |
| CN205328795U (en) | Wet spinning acrylic fibres production polymerization effluent disposal system | |
| CN210261261U (en) | Efficient nitrogen and phosphorus removal system for treating aquaculture tail 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: 20131225 |