CN104891737A - Method for strengthened hydrolytic acidification of chemical industry wastewater - Google Patents
Method for strengthened hydrolytic acidification of chemical industry wastewater Download PDFInfo
- Publication number
- CN104891737A CN104891737A CN201510271977.1A CN201510271977A CN104891737A CN 104891737 A CN104891737 A CN 104891737A CN 201510271977 A CN201510271977 A CN 201510271977A CN 104891737 A CN104891737 A CN 104891737A
- Authority
- CN
- China
- Prior art keywords
- chemical industry
- acidication
- wastewater
- value
- waste water
- 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.)
- Granted
Links
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention provides a method for strengthened hydrolytic acidification of chemical industry wastewater. The method is characterized by comprising the following steps: (1) detecting the pH value of the chemical industry wastewater, directly going to the next step if the pH value is 4.5-9.5, and adjusting the pH value to 4.5-9.5 if the pH value is not 4.5-9.5; (2) injecting the chemical industry wastewater into a strengthened hydrolytic acidification reactor containing hydrolytic acidification bacteria and polymetal catalytic contact filler, and carrying out strengthened hydrolytic acidification reaction under the conditions of aerating and stirring; and (3) after the reaction ends, adding a flocculant for flocculating settling for obtaining supernatant, detecting a B/C value, returning to the step (2) if the B/C value does not reach the standards, and going to subsequent aerobic biochemical reaction after the B/C value reaches the standards. According to the method provided by the invention, a strengthened hydrolytic acidification filler bag is added into the traditional hydrolytic acidification system and can carry out micro-electrolysis under acidic conditions, so that the removal of difficultly-degradable substances is facilitated, hydrolytic acidification is facilitated, the B/C value of yielding water can reach 0.3-0.6, and the removal ratio of COD (Chemical Oxygen Demand) can reach over 35%.
Description
Technical field
The invention belongs to environmental protection technical field, particularly relate to the method that enhanced hydrolysis acidifying improves high density difficult for biological degradation wastewater from chemical industry biodegradability.
Background technology
Along with the fast development of China's industry, the waste water of discharge gets more and more, more and more serious to the pollution of water surrounding; The particularly waste water of agricultural chemicals, metallurgy, plating and dyeing, waste water has difficult for biological degradation, biodegradability is low, toxicity is large, saltiness high, and this direct discharging of waste water can cause great destruction to water surrounding.In biochemical treatment of industrial wastewater process, acidication is important removing toxic substances pretreatment stage, determines the efficiency of subsequent biochemical reaction.If effect is bad before acidication, the difficulty of follow-up process will be increased, increase wastewater treatment expense, the problem such as cause effluent quality not up to standard.Therefore the acidication efficiency strengthening high density difficult for biological degradation wastewater from chemical industry is necessary.
Wastewater from chemical industry pre-treatment at present for difficult for biological degradation adopts independent acidication method to improve limited to wastewater biodegradability, the waste water that particularly toxicity is large, the shortcomings such as microorganism not easily survives, and the biofilm time is long, and acidication efficiency is low, the residence time is long.Such as anaerobism (acidication stage) treatment of dyeing and printing, the residence time is when reaching 24h, COD removal efficiency reaches 29%, B/C is the highest just reaches 0.26 (Liu Weijing. dyeing waste water depth degradation technique and engineering Application Research. Institutes Of Technology Of Nanjing [D], 2013.6); At present, existing a lot of to the research of enhanced hydrolysis acidifying; Such as with electric microfield-Zero-valent Iron strengthening wastewater from chemical industry acidication, but its B/C bring up to 0.42 need the residence time to reach 7 days and engineer applied condition harshness (Wang Jingxin. electric microfield-Zero-valent Iron strengthening wastewater from chemical industry acidication. HeFei University of Technology [D], 2014.4); The present invention utilizes a kind of many metal catalytic contact fillers, strengthens the attachment biofilm of acidication bacterium on the one hand, provides flora to the demand of trace element; On the other hand, realize many metal catalytics reduction reaction, improve the wastewater toxicity structure of matter, improve its acidication efficiency.The technique improves the shortcoming of conventional hydrolysis acidifying, make the residence time, biofilm time shorten, water outlet B/C value brings up to 0.3-0.6, COD clearance > 35%.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide a kind of method that enhanced hydrolysis acidifying improves high density difficult for biological degradation wastewater from chemical industry biodegradability, effectively can improve the biodegradability of wastewater from chemical industry, shorten the residence time, be conducive to follow-up biological treatment.
In order to achieve the above object, the invention provides a kind of method strengthening wastewater from chemical industry acidication, it is characterized in that, comprise the following steps:
The first step: the pH value detecting wastewater from chemical industry, if pH value is 4.5-9.5, directly enters next step, otherwise, pH value is transferred to 4.5-9.5;
Second step: wastewater from chemical industry is injected the enhanced hydrolysis acidification reactor containing acidication bacterium and many metal catalytics contact filler, carry out enhanced hydrolysis acidification reaction under the condition of aeration and stirring;
3rd step: after reaction terminates, add flocculation agent and carry out flocculation sediment, obtains supernatant liquor, detects B/C value, if B/C value is not up to standard, returns second step, if B/C value up to standard after enter follow-up aerobic biochemical and react.
Preferably, the wastewater from chemical industry in the described the first step is agricultural chemicals waste water, Metallurgical Waste Water, electroplating wastewater or dyeing waste water, biodegradability index B/C < 0.2, COD > 5000mg/L.
Preferably, described pH adjusting agent is NaOH or H
2sO
4.
Preferably, described many metal catalytic contact fillers contain Fe, C, Cu, Au, Mn, Ni and Zn, wherein, Fe, C mass ratio is 2: 1-6: 1, Fe, Cu mass ratio is 6: 1-12: 1, Fe, Mn mass ratio is 5: 1-10: 1, Au, Mn, Ni, Zn mass ratio is 2: 1: 1: 1-6: 1: 1: 1, its preparation method for each element is mixed in proportion, at 200-500 DEG C, pressure is under the condition of 2.5Mpa-5Mpa, vacuum pressing 0.5-2h.
Preferably, often liter of described waste water needs many metal catalytics to contact filler 200-500g.
Preferably, the aeration rate in described second step is 0.1-1mg/L.
Preferably, the temperature of reaction of described enhanced hydrolysis acidification reaction is 10-55 DEG C, wherein 35 DEG C of the bests.
Preferably, the stirring velocity in described second step is 100rpm.
Preferably, in described second step, before carrying out enhanced hydrolysis acidification reaction, add H at enhanced hydrolysis acidification reactor
2o
2solution and persulphate.
More preferably, described H
2o
2the concentration of solution is 30%, and often liter of waste water adds 0-2.2g.
More preferably, described persulphate is Na
2s
2o
8, K
2s
2o
8or (NH
4)
2s
2o
8, the amount that often liter of waste water adds persulphate is 0-20g.
Preferably, the time of the enhanced hydrolysis acidification reaction of described second step is 4-24h.
Preferably, describedly add the concrete steps that flocculation agent carries out flocculation sediment and comprise: first add NaOH solution or Ca (OH)
2solution regulates pH to be 7-9, stirs 2-5min, then add PAM with 250rpm speed, stirs 10s with 200rpm speed, then stirs 20s with 50rpm speed, and after flocculation sediment, pH is 8.6.
More preferably, the add-on of described PAM is that every premium on currency adds 0.5-1mgPAM.
Compared with prior art, the invention has the beneficial effects as follows:
1. in the inventive method, enhanced hydrolysis acidifying filler bag is added to conventional hydrolysis acidification system, enhanced hydrolysis acidifying filler bag can carry out light electrolysis in acid condition, be conducive to the removal of hard-degraded substance, and be conducive to the carrying out of acidication, make water outlet B/C reach between 0.3-0.6, COD clearance reaches more than 35%.
2. in the inventive method, enhanced hydrolysis acidifying filler used includes the metals such as Fe, C, Cu, Au, Mn, Ni, Zn, in acidication filler bag, material is as the necessary nutritive substance of acidication bacterium, and filler bag light electrolysis consumes hydrogen ion, is conducive to acidication for acidication produces enough basicity.
3. in the inventive method, in reactor for hydrolysis and acidification, adopt micro-aeration and stirring, promote the effect of mass transmitting between microorganism, be more conducive to the synergy between facultative acidication and many metal catalysed reaction.
4. the inventive method water outlet pH stablizes, and water outlet: pH6-7, is conducive to follow-up Aerobic biological process, adds alkali readjustment amount little.
5. the inventive method hydraulic detention time 4-24h, shortens the residence time of chemical industry used water difficult to degradate acidication.
6. the inventive method adopts multistage enhanced hydrolysis acidification, is more conducive to the thorough of acidication.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the inventive method enhanced hydrolysis acidifying.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Waste water COD, BOD, filtrate cumulative volume are comprised to wastewater recycle index.Concrete measuring method is shown in [water and wastewater recycle analytical procedure (the 4th edition) China Environmental Science Press, Beijing, 2002].
PAM is cationic polyacrylamide, white granular material, from traditional Chinese medicines institutional purchase.
NaOH is white plates, from traditional Chinese medicines institutional purchase.
Many metal catalytic contact fillers in various embodiments of the present invention, are made up of Fe, C, Cu, Au, Mn, Ni and Zn, wherein, wherein Fe, C mass ratio is 2: 1, Fe, Cu mass ratio is 5: 1, Fe, Mn mass ratio is 10: 1, Au, Mn, Ni, Zn mass ratio is 2: 1: 1: 1.Its preparation method is for be mixed in proportion each element, and at 300 DEG C, pressure is under the condition of 4Mpa, vacuum pressing 1h, adopts nylon material packaging.
Acidication bacterium in various embodiments of the present invention takes from urban wastewater treatment firm second pond mud.
Embodiment one
As shown in Figure 1, a kind of method strengthening wastewater from chemical industry acidication, concrete steps are:
1. (COD is 8067mg/L to get ion exchange resin waste water 30L, B/C is 0.15, pH=8.78) in equalizing tank, wastewater pH=8.78 are within the scope of 4.5-9.5, need not pH be adjusted, directly inject the enhanced hydrolysis acidification reactor containing acidication bacterium (taking from urban wastewater treatment firm second pond) and many metal catalytics contact filler, enhanced hydrolysis acidifying filler bag 15kg in reactor, in reactor, acidication bacterium 100g (dry weight), adds 30mL H
2o
2(30%) solution, adds Sodium Persulfate 5g, micro-aeration (0.5mg/L) and stir (250rpm) condition under carry out enhanced hydrolysis acidification reaction, react and carry out at 25 DEG C.
2. after primary reinforcement acidication reaction 6h, get 500mL water and carry out flocculation sediment, water outlet pH is 6.7, first adding 11mLNaOH solution (0.5moL/L) regulates pH to be 8.2, rapid stirring 2min (250rpm), add 0.5mLPAM (1g/L) again, rapid stirring 10s (200rpm) is low rate mixing 20s (50rpm) again, and after flocculation sediment, pH is 8.2.After testing, supernatant liquor B/C=0.26 < 0.3 after flocculation.
3. the effluent recycling after flocculation sediment carries out the reaction of secondary reinforcement acidication to enhanced hydrolysis acidification reactor, the secondary reinforcement acidication residence time (i.e. reaction times) 4h.
4. to after the waste water flocculating after secondary reinforcement acidication, get supernatant liquor and detect.
After testing, the waste water COD after flocculation sediment is that 2950mg/L, B/C=0.42, COD clearance reaches 63.4%, B/C and brings up to 0.42 by original 0.15.
Embodiment two
As shown in Figure 1, a kind of method strengthening wastewater from chemical industry acidication, concrete steps are:
1. (COD is 15670mg/L to get certain waste water from pesticide factory 30L, B/C is 0.15, pH is 8.9) in equalizing tank, pH, within the scope of 4.5-9.5, need not be adjusted in wastewater pH=8.9, direct injection contains the enhanced hydrolysis acidification reactor of acidication bacterium (taking from urban wastewater treatment firm second pond) and many metal catalytics contact filler, acidication bacterium 100g (dry weight) in reactor, in reactor, pharmaceutics wastewater filler bag 15kg, adds 30mL H
2o
2(30%) solution, adds Sodium Persulfate 8g, micro-aeration (0.8mg/L) and stir (250rpm) condition under carry out enhanced hydrolysis acidification reaction, react and carry out at 25 DEG C.
2. primary reinforcement acidication reaction 10h gets 500mL water and carries out flocculation sediment, water outlet pH is 6.3, first adding 13mLNaOH solution (0.5moL/L) regulates pH to be 8.1, rapid stirring 2min (250rpm), add 0.5mLPAM (1g/L) again, rapid stirring 10s (200rpm) is low rate mixing 20s (50rpm) again, and after flocculation sediment, pH is 8.5.After testing, supernatant liquor B/C=0.25 < 0.3 after flocculation.
3. the effluent recycling after flocculation sediment carries out the reaction of secondary reinforcement acidication to enhanced hydrolysis acidification reactor, secondary reinforcement acidication reaction time 2h.
4. to the reacted waste water flocculating of secondary reinforcement acidication, get supernatant liquor and detect.
After testing, the waste water COD after flocculation sediment is that 10028.8mg/L, B/C=0.31, COD clearance reaches 36%, B/C and brings up to 0.31 by original 0.15.
Embodiment three
As shown in Figure 1, a kind of method strengthening wastewater from chemical industry acidication, concrete steps are:
1., in equalizing tank, wastewater pH=12.75, not within the scope of 4.5-9.5, are the H of 4mol/l by concentration to get certain dye house effluents 30L (COD is 8560mg/L, B/C be 0.18, pH be 12.75)
2sO
4pH is adjusted to be 8.15, the enhanced hydrolysis acidification reactor containing acidication bacterium (taking from urban wastewater treatment firm second pond) and many metal catalytics contact filler is injected after waste water regulates, pharmaceutics wastewater filler bag 15kg in reactor, in reactor, acidication bacterium 100g (dry weight), adds 30mL H
2o
2(30%) solution, (not adding persulphate), micro-aeration (0.8mg/L) and stir (250rpm) condition under carry out enhanced hydrolysis acidification reaction, react and carry out at 25 DEG C.
2. primary reinforcement acidication reaction 5h gets 500mL water and carries out flocculation sediment, water outlet 6.8, first adding 10mLNaOH solution (0.5moL/L) regulates pH to be 8.5, rapid stirring 2min (250rpm), add 0.5mLPAM (1g/L) again, rapid stirring 10s (200rpm) is low rate mixing 20s (50rpm) again, and after flocculation sediment, pH is 8.2.
3. to the reacted waste water flocculating of primary reinforcement acidication, get supernatant liquor and detect.
After testing, the waste water COD after flocculation sediment is that 2003.8mg/L, B/C=0.38, COD clearance reaches 76.6%, B/C and brings up to 0.38 by original 0.18.
Embodiment four
As shown in Figure 1, a kind of method strengthening wastewater from chemical industry acidication, concrete steps are:
1. (COD is 26570mg/L to get certain pharmacy waste water 30L, B/C is 0.13, pH=1.23) in equalizing tank, wastewater pH=1.23 are not within the scope of 4.5-9.5, pH is adjusted to be 7.45 with the NaOH that concentration is 4mol/l, inject the enhanced hydrolysis acidification reactor containing acidication bacterium (taking from urban wastewater treatment firm second pond) and many metal catalytics contact filler, pharmaceutics wastewater filler bag 15kg in reactor, in reactor, acidication bacterium 100g (dry weight), adds 30mL H
2o
2(30%) solution, adds Sodium Persulfate 5g, micro-aeration (0.5mg/L) and stir (250rpm) condition under carry out enhanced hydrolysis acidification reaction, react and carry out at 25 DEG C.
2. after primary reinforcement acidication reaction 6h, get 500mL water and carry out flocculation sediment, water outlet pH is 6.5, first adding 13mLNaOH solution (0.5moL/L) regulates pH to be 8.6, rapid stirring 2min (250rpm), add 0.5mLPAM (1g/L) again, rapid stirring 10s (200rpm) is low rate mixing 20s (50rpm) again, and after flocculation sediment, pH is 8.6.Detect after flocculation, B/C=0.23 < 0.3.
3. the effluent recycling after flocculation sediment carries out the reaction of secondary reinforcement acidication to enhanced hydrolysis acidification reactor, secondary reinforcement acidication residence time 4h.
4. to after the waste water flocculating after secondary reinforcement acidication, get supernatant liquor and detect.
After testing, the waste water COD after flocculation sediment is that 8940mg/L, B/C=0.41, COD clearance reaches 66.4%, B/C and brings up to 0.41 by original 0.13.
Embodiment five
As shown in Figure 1, a kind of method strengthening wastewater from chemical industry acidication, concrete steps are:
1. (COD is 15600mg/L to get certain electroplating wastewater 30L, B/C is 0.16, pH=1.56) in equalizing tank, wastewater pH=1.56 are not within the scope of 4.5-9.5, pH is adjusted to be 7.23 with the NaOH that concentration is 4mol/l, inject the enhanced hydrolysis acidification reactor containing acidication bacterium (taking from urban wastewater treatment firm second pond) and many metal catalytics contact filler, pharmaceutics wastewater filler bag 15kg in reactor, in reactor, acidication bacterium 100g (dry weight), adds 30mL H
2o
2(30%) solution, adds Sodium Persulfate 10g, micro-aeration (0.5mg/L) and stir (250rpm) condition under carry out enhanced hydrolysis acidification reaction, react and carry out at 25 DEG C.
2. after primary reinforcement acidication reaction 10h, get 500mL water and carry out flocculation sediment, water outlet pH is 6.5, first adding 13mLNaOH solution (0.5moL/L) regulates pH to be 8.2, rapid stirring 2min (250rpm), add 0.5mLPAM (1g/L) again, rapid stirring 10s (200rpm) is low rate mixing 20s (50rpm) again, and after flocculation sediment, pH is 8.2.Detect after flocculation, B/C=0.25 < 0.3.
3. the effluent recycling after flocculation sediment carries out the reaction of secondary reinforcement acidication to enhanced hydrolysis acidification reactor, secondary reinforcement acidication residence time 6h.
4. to after the waste water flocculating after secondary reinforcement acidication, get supernatant liquor and detect.
After testing, the waste water COD after flocculation sediment is that 7867mg/L, B/C=0.37, COD clearance reaches 49.6%, B/C and brings up to 0.37 by original 0.16.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. strengthen a method for wastewater from chemical industry acidication, it is characterized in that, comprise the following steps:
The first step: the pH value detecting wastewater from chemical industry, if pH value is 4.5-9.5, directly enters next step, otherwise, by pH adjusting agent, pH value is transferred to 4.5-9.5;
Second step: wastewater from chemical industry is injected the enhanced hydrolysis acidification reactor containing acidication bacterium and many metal catalytics contact filler, carry out enhanced hydrolysis acidification reaction under the condition of aeration and stirring;
3rd step: after reaction terminates, add flocculation agent and carry out flocculation sediment, obtains supernatant liquor, detects B/C value, if B/C value is not up to standard, returns second step, if B/C value up to standard after enter follow-up aerobic biochemical and react.
2. the method for strengthening wastewater from chemical industry acidication as claimed in claim 1, it is characterized in that, wastewater from chemical industry in the described the first step is agricultural chemicals waste water, Metallurgical Waste Water, electroplating wastewater or dyeing waste water, biodegradability index B/C < 0.2, COD > 5000mg/L.
3. the method for strengthening wastewater from chemical industry acidication as claimed in claim 1, it is characterized in that, described pH adjusting agent is NaOH or H
2sO
4.
4. the method for strengthening wastewater from chemical industry acidication as claimed in claim 1, it is characterized in that, described many metal catalytic contact fillers contain Fe, C, Cu, Au, Mn, Ni and Zn, wherein, Fe, C mass ratio is 2: 1-6: 1, Fe, Cu mass ratio is 6: 1-12: 1, Fe, Mn mass ratio is 5: 1-10: 1, Au, Mn, Ni, Zn mass ratio is 2: 1: 1: 1-6: 1: 1: 1, its preparation method is for be mixed in proportion each element, at 200-500 DEG C, pressure is under the condition of 2.5Mpa-5Mpa, vacuum pressing 0.5-2h.
5. the method for strengthening wastewater from chemical industry acidication as claimed in claim 1, it is characterized in that, the aeration rate in described second step is 0.1-1mg/L.
6. the method for strengthening wastewater from chemical industry acidication as claimed in claim 1, it is characterized in that, the temperature of reaction of described enhanced hydrolysis acidification reaction is 10-55 DEG C.
7. the method for strengthening wastewater from chemical industry acidication as claimed in claim 1, is characterized in that, in described second step, before carrying out enhanced hydrolysis acidification reaction, add H at enhanced hydrolysis acidification reactor
2o
2solution and persulphate.
8. the method for strengthening wastewater from chemical industry acidication as claimed in claim 7, is characterized in that, described H
2o
2the concentration of solution is 30%, and often liter of waste water adds 0-2.2g.
9. the method for strengthening wastewater from chemical industry acidication as claimed in claim 7, it is characterized in that, described persulphate is Na
2s
2o
8, K
2s
2o
8or (NH
4)
2s
2o
8, the amount that often liter of waste water adds persulphate is 0-20g.
10. the method for strengthening wastewater from chemical industry acidication as claimed in claim 1, is characterized in that, described add the concrete steps that flocculation agent carries out flocculation sediment and comprises: first add NaOH solution or Ca (OH)
2solution, stirs 2-5min with 250rpm speed, then adds PAM, stirs 10s with 200rpm speed, then stirs 20s with 50rpm speed, and after flocculation sediment, pH is 8.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271977.1A CN104891737B (en) | 2015-05-25 | 2015-05-25 | A kind of method for strengthening wastewater from chemical industry hydrolysis acidification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271977.1A CN104891737B (en) | 2015-05-25 | 2015-05-25 | A kind of method for strengthening wastewater from chemical industry hydrolysis acidification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104891737A true CN104891737A (en) | 2015-09-09 |
| CN104891737B CN104891737B (en) | 2017-06-06 |
Family
ID=54024773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510271977.1A Expired - Fee Related CN104891737B (en) | 2015-05-25 | 2015-05-25 | A kind of method for strengthening wastewater from chemical industry hydrolysis acidification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104891737B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611479A (en) * | 2022-12-05 | 2023-01-17 | 中国市政工程华北设计研究总院有限公司 | Urban sewage recycling coupling multi-source energy extraction system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129595A1 (en) * | 2007-04-04 | 2008-10-30 | Syntropy Co.Ltd, . | Method of decolorizing colored wastewater |
| CN102765855A (en) * | 2012-07-16 | 2012-11-07 | 煤炭工业济南设计研究院有限公司 | Coating wastewater processing method and device |
| CN104556556A (en) * | 2014-12-03 | 2015-04-29 | 东华大学 | Method for deep treatment of printing and dyeing chemical comprehensive wastewater |
-
2015
- 2015-05-25 CN CN201510271977.1A patent/CN104891737B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129595A1 (en) * | 2007-04-04 | 2008-10-30 | Syntropy Co.Ltd, . | Method of decolorizing colored wastewater |
| CN102765855A (en) * | 2012-07-16 | 2012-11-07 | 煤炭工业济南设计研究院有限公司 | Coating wastewater processing method and device |
| CN104556556A (en) * | 2014-12-03 | 2015-04-29 | 东华大学 | Method for deep treatment of printing and dyeing chemical comprehensive wastewater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611479A (en) * | 2022-12-05 | 2023-01-17 | 中国市政工程华北设计研究总院有限公司 | Urban sewage recycling coupling multi-source energy extraction system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104891737B (en) | 2017-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104891719A (en) | Method for pre-treating organic industrial wastewater based on ferric-carbon micro-electrolysis activated persulfate | |
| CN102295382B (en) | Treatment method of two-step wet acrylic fiber production wastewater | |
| CN101423313B (en) | Fluorescent whitening agent production waste water treatment process | |
| CN101391851B (en) | Treatment process of p toluidine-containing high concentration refractory organic wastewater | |
| CN100402441C (en) | Method for treating sewage by catalytic iron internal electrogravimetry and its filler | |
| CN103641230B (en) | Method for carrying out organic wastewater pretreatment by using an iron-carbon-Fenton-integrated reactor | |
| CN103896401A (en) | Water treatment device for remaining sludge decrement and enhanced biological denitrification and dephosphorization and method | |
| CN102616979B (en) | Treatment method for surface treatment liquid wastewater of metal processing | |
| CN204022629U (en) | The treatment system of tetrahydrofuran (THF) waste water and pyridines waste water | |
| CN101774690A (en) | Device for improving AAO treated dyeing wastewater and method thereof | |
| CN102126780B (en) | Application of efficient COD (chemical oxygen demand) remover to wastewater treatment | |
| CN105668887A (en) | Standard discharge method applied to oil and gas field fracturing flow-back fluid deep treatment | |
| CN106673277A (en) | Technical scheme applied to advanced treatment for fracturing flow-back fluid of oil-gas field to achieve standard discharge | |
| CN105366871A (en) | Processing method of landfill leachate | |
| CN102020384A (en) | Method for handling organic wastewater based on Fenton reaction | |
| CN101955279B (en) | Advanced treatment method of industrial waste water by combining catalysis internal electrolysis, coupling, oxidization and flocculation | |
| CN102259964A (en) | In-situ enhanced treatment composite agent synergic with inherent pollutant components in printing and dyeing wastewater | |
| CN101973659A (en) | Device and method for refining waste water by treating vitamin B12 by means of co-use of micro-electrolysis and physicochemical method | |
| CN209872704U (en) | Device for low-energy-consumption high-efficiency enhanced treatment of printing and dyeing wastewater | |
| CN204779239U (en) | High-efficiency treatment system for coking wastewater | |
| CN106467349B (en) | High-concentration acidic organic wastewater treatment system and method | |
| CN104891737A (en) | Method for strengthened hydrolytic acidification of chemical industry wastewater | |
| CN204298126U (en) | A kind of catalyst oxidation reactor | |
| CN105254116A (en) | Chemical waste water processing method | |
| CN103708658B (en) | Iron aluminium Aerated micro-electrolysis sewage treatment process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20200525 |