CN104310665A - Pretreatment method of nonionic surfactant wastewater - Google Patents
Pretreatment method of nonionic surfactant wastewater Download PDFInfo
- Publication number
- CN104310665A CN104310665A CN201410524699.1A CN201410524699A CN104310665A CN 104310665 A CN104310665 A CN 104310665A CN 201410524699 A CN201410524699 A CN 201410524699A CN 104310665 A CN104310665 A CN 104310665A
- Authority
- CN
- China
- Prior art keywords
- waste water
- nonionogenic tenside
- catalytic oxidation
- groove
- wastewater
- 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
- 239000002351 wastewater Substances 0.000 title claims abstract description 57
- 239000002736 nonionic surfactant Substances 0.000 title abstract description 4
- 238000002203 pretreatment Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 23
- 230000003197 catalytic Effects 0.000 claims abstract description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 230000003647 oxidation Effects 0.000 claims description 19
- 238000005868 electrolysis reaction Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000005189 flocculation Methods 0.000 claims description 5
- 230000016615 flocculation Effects 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K Aluminium chloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L Iron(II) sulfate Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract description 4
- 230000001105 regulatory Effects 0.000 abstract 2
- 230000003311 flocculating Effects 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 241000276438 Gadus morhua Species 0.000 description 6
- 235000019516 cod Nutrition 0.000 description 6
- 230000037250 Clearance Effects 0.000 description 5
- 230000035512 clearance Effects 0.000 description 5
- 230000001590 oxidative Effects 0.000 description 4
- 230000002829 reduced Effects 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 229910001448 ferrous ion Inorganic materials 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl radical Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001112 coagulant Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000004059 degradation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000001804 emulsifying Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000007704 wet chemistry method Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention relates to a pretreatment method of nonionic surfactant wastewater. The invention aims to provide a method which has the characteristics of high treatment efficiency, capability of full automation operation of the treatment system and lower operating cost. The technical scheme is as follows: the method sequentially comprises the following steps: a. regulating the pH value of wastewater in a wastewater regulating tank to 2.0-4.0 with sulfuric acid, and meanwhile, adding a catalyst FeSO4; b. sending the wastewater treated by the step a into an electrolytic reaction tank filled with an oxidizer to perform electrolytic treatment, sending into a catalytic oxidation reaction tank to perform sufficient oxidation reaction, and meanwhile, enabling the wastewater output after the reaction of the catalytic oxidation reaction tank to flow to the electrolytic reaction tank according to a certain internal circulation proportion; and c. sending the wastewater output by the catalytic oxidation reaction tank in the step b into a flocculating settling unit to perform settling treatment, sending the supernate into a subsequent treatment technique, and treating the waste residues according to the specifications.
Description
Technical field
The invention belongs to environment protection technical field of waste water processing, particularly relate to a kind of pretreatment process for nonionogenic tenside waste water.
Background technology
Nonionogenic tenside (non-ionic surfactant, NIS) because it has higher surfactivity, aqueous solution surface tension is lower, the micelle-forming concentration of nonionogenic tenside is general all lower than anion surfactant simultaneously, there is better emulsifying effect and washability, become the tensio-active agent that usage quantity after anion surfactant is maximum, the throughput of China's nonionogenic tenside is also in quick growth in recent years.In the market polyoxyethylene-type and polyalcohols nonionogenic tenside accounting higher, and these materials all belong to difficult for biological degradation type organic matter, and a large amount of production of nonionogenic tenside and use increase the risk of environment.
Tensio-active agent is mainly through discharge of wastewater entered environment, tensio-active agent in waste water can cause water body to bubble, produce toxicity, and tensio-active agent rises to steep oneself-meeting and reduces reoxygenation speed in water and oxygenation degree in water, and water quality is degenerated, affect hydrobiological existence, self purification of water body is obstructed.Meanwhile, tensio-active agent can also other pollution substance in emulsification water body, increases the concentration of pollution substance, causes indirect pollution.In addition, a large amount of foams also can affect the settling property of mud in waste water, thus affects the processing efficiency of waste water disposal facility.
Certainly, at present also not for ambient quality standard and the emission standard of nonionogenic tenside, but consider its disadvantageous effect to environment, develop removal technology targetedly and treatment facility is still very necessary.In view of the special physicochemical property of nonionogenic tenside, be different from anion surfactant class waste water, the treatment effect of conventional coagulating sedimentation+biochemical processing process is all undesirable; Though the physical removal methods such as foam separation can reach the object isolating nonionogenic tenside from water, fundamentally do not destroy the structure of nonionogenic tenside, remove not thorough.The high-level oxidation technologies such as traditional wet oxidation can destroy the structure of nonionogenic tenside, eliminate the toxicity of nonionogenic tenside, but cost are relatively high, and the problem of foam control under facing vigorous reaction condition.
Summary of the invention
Technical problem to be solved by this invention is the deficiency overcoming above-mentioned background technology, a kind of pretreatment process for nonionogenic tenside waste water is provided, the method should be able to effectively process nonionogenic tenside waste water, has the advantages that processing efficiency is high, treatment system can realize full-automatic operation and working cost is lower.
Technical scheme provided by the invention is:
For a pretreatment process for nonionogenic tenside waste water, carry out according to following steps successively:
A. with pH regulator to 2.0 ~ 4.0 of sulfuric acid by waste water in wastewater regulation tank, add catalyst Fe SO simultaneously
4;
B. first the waste water of step a process enter the electrolytic reaction groove adding oxygenant and carry out electrolysis treatment, then enter catalytic oxidation groove and carry out fully oxidized reaction, the waste water simultaneously exported after the reaction of catalytic oxidation groove is back to the process of electrolytic reaction groove according to certain internal recycle ratio;
C. the waste water that in step b, catalytic oxidation groove exports enters flocculation sediment unit and carries out precipitation process, and supernatant liquor enters subsequent treatment process, and waste residue separately deals with by regulation.
In described step a, the pH value of waste water is preferably 2.0 ~ 3.5;
In described step a, catalyst Fe SO
4dosage is 400mg/L ~ 600mg/L;
In described step b, the oxygenant added in electrolytic reaction groove is H
2o
2, dosage is 7.5mg/L ~ 45mg/L;
In described step b, received current during electrolytic reaction groove electrolysis treatment is 10-20A.
In described step b, the waste water exported after completing catalytic oxidation in catalytic oxidation groove, is back in electrolytic reaction groove in the internal recycle ratio (namely reflux waste water and the volume ratio transporting to subsequent processing waste water) of 1:1;
In described step b, the residence time of waste water in electrolytic reaction groove and catalytic oxidation groove is 30min ~ 60min;
Flocculation agent in described step c is polymerize aluminum chloride (PAC).
The present invention has following significant advantage:
(1) whole treatment system is reliable and stable, and backflow design had not only reduced running cost but also waste water reaction system is mixed stable;
(2) processing efficiency is high, and in waste water, the clearance of NIS can reach 50% ~ 80%.；
(3) working cost is lower, and relative conventional wet chemical oxidation significantly reduces medicament usage quantity;
(4) full-automatic operation can be realized, be applicable to industrial applications and promote.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of catalytic and oxidative electrolysis technology reactive system of the present invention.
Number in the figure: wastewater regulation tank 1, electrolytic reaction groove 2, catalytic oxidation groove 3, power supply 4.
Specific embodiment
Pretreatment process provided by the invention, is first adjusted to applicable scope by nonionogenic tenside (non-ionic surfactant, the NIS) waste water ph in wastewater regulation tank 1, adds catalyzer simultaneously; Then waste water enters catalytic and oxidative electrolysis technology reactor (being made up of electrolytic reaction groove 2 and catalytic oxidation groove 3), after electrolysis (power supply 4 received current) catalytic oxidation, destroy the structure of the NIS in waste water, eliminate toxicity, part also may be degraded by permineralization; Between reactive tank, internal recycle is set according to a certain percentage, with recycle catalyzer, plays the function stablizing whole reactive system simultaneously; Waste water enters flocculation sediment cell processing after catalytic and oxidative electrolysis technology process, and supernatant liquor enters subsequent treatment process, and waste residue then does other disposal by regulation.The method combines the advantage of electrolytics and wet chemistry oxidation, with hydroxyl radical free radical chain reaction for theoretical basis, substantially increase oxidation capacity and processing efficiency, the internal recycle design simultaneously adopted, decrease the dosage of medicament, improve the stability of utilising efficiency and system cloud gray model.In present method processed waste water, the clearance of NIS can reach 50% ~ 80%.The comprehensive advantages such as it is reliable and stable that present method has treatment effect, and energy consumption medicine consumption is low, and operating process can realize automatic management, is easy to industrial applications.
The above-mentioned pretreatment process for nonionogenic tenside waste water, core is catalytic and oxidative electrolysis technology reaction, and concrete reaction equation is as follows:
Solution: H
2o
2+ Fe
2+→ OH+Fe
3+
Negative electrode: Fe
3++ e
-→ Fe
2+
Reaction system take ferrous ion as catalyzer, H
2o
2produce hydroxyl radical free radical (OH) as oxygenant, be aided with electric field dissociation, greatly improve oxygenant to organic capacity of decomposition; Simultaneous reactions System Design inner circulating reflux, can utilize the reductive action of negative electrode by Fe
3+be reduced to Fe
2+, can continuous recycle ferrous ion, significantly reduce the amount of coming into operation of catalyzer.Meanwhile, because of continuous recycle ferrous ion, iron mud generation also can be greatly reduced.
Operation steps of the present invention and process is further described below according to embodiment.
Embodiment 1
Certain simulated wastewater COD measured value is 21782mg/L, and adjust ph is 2.0, FeSO4 addition is 600mg/L, H
2o
2dosage is 75mg/L, and received current is set as 19.2A, and nitrate recirculation ratio is set as 1:1, and the residence time is 30min, and water outlet COD measured value is 10073mg/L, and clearance is 53.8%.
Embodiment 2
Certain simulated wastewater COD measured value is 11036mg/L, and adjust ph is 2.5, FeSO4 addition is 500mg/L, H
2o
2dosage is 30mg/L, and received current is set as 9.7A, and nitrate recirculation ratio is set as 1:1, and the residence time is 60min, and water outlet COD measured value is 2106mg/L, and clearance is 80.9%.
Embodiment 3
Certain simulated wastewater COD measured value is 5367mg/L, and adjust ph is 3.0, FeSO4 addition is 400mg/L, H
2o
2dosage is 7.5mg/L, and received current is set as 9.7A, and nitrate recirculation ratio is set as 1:1, and the residence time is 60min, and water outlet COD measured value is 2553mg/L, and clearance is 52.4%.
Above-described embodiment is used for explaining and the present invention is described, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (8)
1., for a pretreatment process for nonionogenic tenside waste water, carry out according to following steps successively:
A. with pH regulator to 2.0 ~ 4.0 of sulfuric acid by waste water in wastewater regulation tank (1), add catalyst Fe SO4 simultaneously;
B. first the waste water of step a process enter the electrolytic reaction groove (2) adding oxygenant and carry out electrolysis treatment, then enter catalytic oxidation groove (3) and carry out fully oxidized reaction, the waste water simultaneously exported after the reaction of catalytic oxidation groove is back to the process of electrolytic reaction groove according to certain internal recycle ratio;
C. the waste water that in step b, catalytic oxidation groove exports enters flocculation sediment unit and carries out precipitation process, and supernatant liquor enters subsequent treatment process, and waste residue separately deals with by regulation.
2. the pretreatment process for nonionogenic tenside waste water according to claim 1, is characterized in that: in described step a, and the pH value of waste water is 2.0 ~ 3.5.
3. the pretreatment process for nonionogenic tenside waste water according to claim 1, is characterized in that: in described step a, catalyst Fe SO4 dosage is 400mg/L ~ 600mg/L.
4. the pretreatment process for nonionogenic tenside waste water according to claim 1, it is characterized in that: in described step b, the oxygenant added in electrolytic reaction groove is H2O2, dosage is 7.5mg/L ~ 45mg/L.
5. the pretreatment process for nonionogenic tenside waste water according to claim 1 or 2 or 3 or 4, it is characterized in that: in described step b, received current during electrolytic reaction groove electrolysis treatment is 10-20A.
6. the pretreatment process for nonionogenic tenside waste water according to claim 5, it is characterized in that: in described step b, the waste water exported after completing catalytic oxidation in catalytic oxidation groove, is back in electrolytic reaction groove in the internal recycle ratio of 1:1.
7. the pretreatment process for nonionogenic tenside waste water according to claim 6, is characterized in that: in described step b, and the residence time of waste water in electrolytic reaction groove and catalytic oxidation groove is 30min ~ 60min.
8. the pretreatment process for nonionogenic tenside waste water according to claim 7, is characterized in that: the flocculation agent in described step c is polymerize aluminum chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410524699.1A CN104310665A (en) | 2014-10-08 | 2014-10-08 | Pretreatment method of nonionic surfactant wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410524699.1A CN104310665A (en) | 2014-10-08 | 2014-10-08 | Pretreatment method of nonionic surfactant wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104310665A true CN104310665A (en) | 2015-01-28 |
Family
ID=52366018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410524699.1A Pending CN104310665A (en) | 2014-10-08 | 2014-10-08 | Pretreatment method of nonionic surfactant wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104310665A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110422A (en) * | 2015-08-27 | 2015-12-02 | 上海五伦化工科技有限公司 | Separating method and device of wool scouring wastewater |
| CN106630052A (en) * | 2016-10-13 | 2017-05-10 | 江南大学 | Alkali metal cleaning effluent treatment method |
| CN107902828A (en) * | 2017-11-21 | 2018-04-13 | 四川理工学院 | The recovery method of Coal Gas Washing Cycling Water nonionic surfactant |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004181329A (en) * | 2002-12-02 | 2004-07-02 | Kurita Water Ind Ltd | Wastewater treatment method and apparatus therefor |
| CN2806437Y (en) * | 2005-05-19 | 2006-08-16 | 武汉大学 | Waste water treatment apparatus |
| KR20100003528A (en) * | 2008-07-01 | 2010-01-11 | 회명산업 주식회사 | Non-degradable waste water treatment apparatus using electrolysis and photo-fenton oxidation process |
| CN201932937U (en) * | 2011-02-23 | 2011-08-17 | 南京赛佳环保实业有限公司 | Waste water treatment device using electro-Fenton reaction |
| CN202246327U (en) * | 2011-10-20 | 2012-05-30 | 武汉大学 | Improved electric Fenton wastewater treatment equipment |
| CN202499737U (en) * | 2012-02-02 | 2012-10-24 | 广州市环境保护工程设计院有限公司 | Multi-stage multi-phase advanced oxidation internal circulation tower coupled with Fenton electrolysis fluidized bed |
| CN102992453A (en) * | 2012-10-09 | 2013-03-27 | 南京中衡元环保设备有限公司 | Two-phase circulating catalytic oxidation device |
| CN103613229A (en) * | 2013-08-07 | 2014-03-05 | 煤科集团杭州环保研究院有限公司 | Reinforced electrochemical coupling catalytic oxidation device and technology |
| CN103708657A (en) * | 2013-08-07 | 2014-04-09 | 煤科集团杭州环保研究院有限公司 | Deep oxidation treatment method and apparatus for difficultly-degraded organic chemical industry wastewater |
-
2014
- 2014-10-08 CN CN201410524699.1A patent/CN104310665A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004181329A (en) * | 2002-12-02 | 2004-07-02 | Kurita Water Ind Ltd | Wastewater treatment method and apparatus therefor |
| CN2806437Y (en) * | 2005-05-19 | 2006-08-16 | 武汉大学 | Waste water treatment apparatus |
| KR20100003528A (en) * | 2008-07-01 | 2010-01-11 | 회명산업 주식회사 | Non-degradable waste water treatment apparatus using electrolysis and photo-fenton oxidation process |
| CN201932937U (en) * | 2011-02-23 | 2011-08-17 | 南京赛佳环保实业有限公司 | Waste water treatment device using electro-Fenton reaction |
| CN202246327U (en) * | 2011-10-20 | 2012-05-30 | 武汉大学 | Improved electric Fenton wastewater treatment equipment |
| CN202499737U (en) * | 2012-02-02 | 2012-10-24 | 广州市环境保护工程设计院有限公司 | Multi-stage multi-phase advanced oxidation internal circulation tower coupled with Fenton electrolysis fluidized bed |
| CN102992453A (en) * | 2012-10-09 | 2013-03-27 | 南京中衡元环保设备有限公司 | Two-phase circulating catalytic oxidation device |
| CN103613229A (en) * | 2013-08-07 | 2014-03-05 | 煤科集团杭州环保研究院有限公司 | Reinforced electrochemical coupling catalytic oxidation device and technology |
| CN103708657A (en) * | 2013-08-07 | 2014-04-09 | 煤科集团杭州环保研究院有限公司 | Deep oxidation treatment method and apparatus for difficultly-degraded organic chemical industry wastewater |
Non-Patent Citations (2)
| Title |
|---|
| 刘发强: "铁碳微电解-Fenton试剂法处理高浓度表面活性剂废水研究", 《中外能源》, vol. 14, no. 09, 15 September 2009 (2009-09-15), pages 99 - 103 * |
| 景长勇等: "电催化氧化法处理阴离子表面活性剂废水", 《化工环保》, vol. 25, no. 05, 30 October 2005 (2005-10-30), pages 368 - 371 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110422A (en) * | 2015-08-27 | 2015-12-02 | 上海五伦化工科技有限公司 | Separating method and device of wool scouring wastewater |
| CN106630052A (en) * | 2016-10-13 | 2017-05-10 | 江南大学 | Alkali metal cleaning effluent treatment method |
| CN107902828A (en) * | 2017-11-21 | 2018-04-13 | 四川理工学院 | The recovery method of Coal Gas Washing Cycling Water nonionic surfactant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103771625B (en) | Device and method for treating pulping wastewater by Fenton catalytic oxidation method | |
| CN104291506B (en) | A kind of method of microwave reinforced light electrolysis combination oxide treatment rubber ingredients waste water | |
| CN202089870U (en) | Biological treatment device for hydroxyethyl cellulose industrial waste water | |
| CN106830467B (en) | Fenton method sewage treatment integrated device based on iron mud recycling and method thereof | |
| CN103922521B (en) | Method used for chrome tanning waste water treatment and chrome recovery | |
| CN109721187A (en) | A kind of chemical nickel plating waste solution processing method | |
| CN107162287A (en) | A kind of advanced treating technology for industrial sewage recycled based on activated carbon | |
| CN105776738A (en) | Method and device for pre-treating organic wastewater | |
| CN110002639A (en) | A kind of processing unit and method of middle and advanced stage aged refuse in MSW landfill percolate | |
| CN106007080A (en) | Method for gradient oxidation deep purification of biochemical tail water | |
| CN104192964B (en) | A kind of sewage water treatment method based on the backflow of flocculation sedimentation tank supernatant liquor | |
| CN104129875A (en) | Cyanated wastewater treatment method | |
| CN104310665A (en) | Pretreatment method of nonionic surfactant wastewater | |
| CN103641230A (en) | Method for carrying out organic wastewater pretreatment by using an iron-carbon-Fenton-integrated reactor | |
| CN208762301U (en) | A kind of depth removes the device of cyanide in coking wastewater | |
| CN109019999A (en) | A kind of processing method of the low concentration containing strong complexing nickel waste water | |
| CN106673277A (en) | Technical scheme applied to advanced treatment for fracturing flow-back fluid of oil-gas field to achieve standard discharge | |
| CN104986898B (en) | A kind of method and device of normal temperature ferrite circular treatment heavy metal containing sewage | |
| CN101973659A (en) | Device and method for refining waste water by treating vitamin B12 by means of co-use of micro-electrolysis and physicochemical method | |
| CN203295291U (en) | Catalytic micro-electrolysis water treatment equipment | |
| CN202924851U (en) | Fenton oxidization reaction-based fluoride waste water treatment device | |
| CN114634265A (en) | photo-Fenton process for treating refractory organic wastewater | |
| CN210457809U (en) | Advanced treatment device for printing and dyeing wastewater | |
| CN104058557A (en) | Non-ferrous metal mine wastewater treatment process | |
| CN103304076A (en) | Catalytic micro-electrolysis water treatment equipment and process method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 701, room 310004, three times square, Shaoxing Road, 536 Zhejiang Road, Xiacheng District, Zhejiang, Hangzhou Applicant after: Zhejiang Zhuo Jin environmental protection Science and Technology Co., Ltd. Address before: 7 building, three times square, 538 Shaoxing Road, Xiacheng Road, Xiacheng District, Hangzhou, Zhejiang, Zhejiang, 310004 Applicant before: Zhejiang Zone King Engineering Technology Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: JIANG ZHUO JIN ENGINEERING TECHNOLOGY CO.,LTD. TO: ZHEJIANG ZHUOJIN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |