CN104140175B - A kind of advanced treatment of city domestic sewage bio-chemical effluent and reuse method - Google Patents
A kind of advanced treatment of city domestic sewage bio-chemical effluent and reuse method Download PDFInfo
- Publication number
- CN104140175B CN104140175B CN201410413629.9A CN201410413629A CN104140175B CN 104140175 B CN104140175 B CN 104140175B CN 201410413629 A CN201410413629 A CN 201410413629A CN 104140175 B CN104140175 B CN 104140175B
- Authority
- CN
- China
- Prior art keywords
- advanced treatment
- resin
- reactor
- water outlet
- regenerated
- 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.)
- Active
Links
Abstract
The invention discloses a kind of advanced treatment and reuse method of city domestic sewage bio-chemical effluent, belong to city domestic sewage advanced treatment field.The steps include: (1) by the municipal effluent after sewage work's secondary biochemical treatment and magnetic anion exchange resin contact reacts in advanced treatment reactor; (2) solid-liquid separation is carried out to water outlet, water outlet after separation passes into electrocatalysis oxidation reaction device, resin portion after separation is back to above-mentioned advanced treatment reactor, all the other send into regenerated reactor regeneration, regenerated liquid after inefficacy is for preparing regenerator after film process or electrochemical treatment, and advanced treatment reactor sent back to by the resin regenerated; (3) advanced treatment reactor water outlet carries out catalytic oxidation process in electrocatalysis oxidation reaction device, and the water outlet processed directly is discharged or reuse.The present invention, by the combined utilization of magnetic anion exchange resin and catalytic oxidation, can remove the Dissolved Organic Matter in water efficiently, reduces the salinity of water outlet.
Description
Technical field
The invention belongs to city domestic sewage advanced treatment field, specifically, is a kind of biochemical tailrace advanced treatment process turning to core with magnetic resin ion-exchange and electrocatalytic oxidation.
Background technology
China is the country of a water resources shortage, and water resource of per capita is only 2240 cubic metres, is about 1/4 of world's per capita share.On the other hand, city domestic sewage is one of important sources of China's water pollution, and China's sewage total release in 2003 reaches 460 billion cubic meters according to statistics, and city domestic sewage accounts for wherein 53.8%.Carrying out advanced treatment and reuse to city domestic sewage, can reduce potential secondary pollution, can alleviate again the present situation of China's water resources shortage, is realize recycling economy and the effective approach of developing ecology civilization.
Further treatment technique conventional at present has the methods such as coagulating sedimentation, filtration, membrane sepn, absorption, ion-exchange, electrochemistry, sterilization, but wherein certain single method is all difficult to the treatment effect reaching expection, or reach the higher processing cost for the treatment of effect needs.
Ion-exchange resin technique has had in Industrial Wastewater Treatment, drinking water treatment field to be applied comparatively widely.Along with the water quality of sewage reuse and demand constantly rise, ion-exchange resin technique also starts to be applied among the advanced treatment of city domestic sewage.
NDMP resin is the independently developed novel magnetic acrylic acid type anion exchange resin of Nanjing University, and this resin can reduce the content of dissolved organic matter in water in a large number.But, on the one hand, resin absorption is organic while, can chlorion be discharged, make the salinity in water increase.On the other hand, if be used alone the advanced treatment that ion exchange technique carries out sewage, sewage disposal is up to standard, resin regeneration will be relatively more frequent, need higher cost.
By Electrocatalytic Oxidation is a kind of " environmentally friendly " technology, has that environment compatibility is high, non-secondary pollution, is convenient to realize the advantages such as industrial automation.At present, electrochemical process has been widely used in the process aspect of the organic waste waters such as dyestuff, papermaking, weaving, chemical industry, leather, bio-pharmaceuticals.In recent years, By Electrocatalytic Oxidation also starts to be used in advanced treatment of wastewater process.Being used alone electro-catalytic oxidation technology, to there is running cost higher, the shortcomings such as electrode vulnerable to pollution.
If by ion exchange technique and electro-catalytic oxidation technology coupling, the chlorion discharged in ion exchange process generates chlorine by catalytic oxidation, chlorine and water react and generate free chlorine, can effectively kill bacterium and intestinal bacteria, and the organic content removed further in water, reduce the salinity raised in ion exchange process simultaneously.Not only can reduce the resin regeneration frequency, slow down the electrode contaminated time, overall cost can also be reduced.Other advanced oxidization method, as although Fenton oxidation, ozone oxidation etc. also can play the effect of organics removal, but the chlorion in resin water outlet cannot be utilized as catalytic oxidation, play the effect to bio-chemical effluent sterilization, also cannot reduce the chloride ion content of water outlet.By ion exchange technique and electro-catalytic oxidation technology coupling, advanced treatment is carried out to bio-chemical effluent, have not been reported in this area.The resin used in the present invention is Nanjing University's independent research, extremely important to the effect of control to resin water outlet of the condition that it uses.
Summary of the invention
1. technical problem to be addressed by invention
Be difficult to effectively remove with single advanced treatment process for the Dissolved Organic Matter in city domestic sewage secondary effluent and the higher problem of cost, the invention provides a kind of city domestic sewage advanced treatment process.It, by the combined utilization of magnetic anion exchange resin and catalytic oxidation, not only can remove the Dissolved Organic Matter in water efficiently, reduces the salinity of water outlet, can also play disinfection simultaneously, and sterilisation effect is stable and lasting.
2. technical scheme
Object of the present invention is achieved through the following technical solutions.
The advanced treatment of city domestic sewage bio-chemical effluent and a reuse method, the steps include:
(1) contact reacts in advanced treatment reactor by the municipal effluent after sewage work's secondary biochemical treatment and magnetic anion exchange resin, this advanced treatment reactor can realize liquid-solid mixing, water flowing multiple is 100-3000 times, and sewage hydraulic detention time is in the reactor 10-60min;
(2) water outlet in step (1) is carried out to the solid-liquid separation of resin and water, water outlet after separation passes into electrocatalysis oxidation reaction device, resin portion after separation is back to the advanced treatment reactor in step (1), and all the other send into regenerated reactor; Regenerate resin in this regenerated reactor, the regenerated liquid after inefficacy is for preparing regenerator recycle in addition after film process or electrochemical treatment, and this advanced treatment reactor sent back to by the resin regenerated;
(3) the advanced treatment reactor water outlet described in carries out catalytic oxidation process in electrocatalysis oxidation reaction device, and current density is 2-10mA/cm
2, the reaction times is 15-60min, and interelectrode distance is 2cm, and the water outlet processed directly is discharged or reuse.
Preferably, the magnetic anion exchange resin described in step (1) is magnetic acrylic acid series strongly basic anionite-exchange resin.Application for a patent for invention (the application number: resin structure 201010017687.1) that the resin that this place adopts is Nanjing University.
Preferably, the liquid-solid hybrid mode in step (1) comprises mechanical stirring, pneumatic agitation or hydraulic mixing.
Preferably, the regenerator described in step (2) is the composite regenerant based on inorganic salt, and in composite regenerant, Inorganic salt is 15% to saturation concentration, and the recovery time is 30-60min.
Preferably, the negative electrode that the electrocatalysis oxidation reaction device in step (3) is used is one of following three kinds: graphite cake, titanium plate, the titanium plate of load ru oxide or iridium oxide; Anode used is the steady electrode of titanium base shape, and coating is ru oxide or iridium oxide.
3. beneficial effect
Compared to prior art, the invention has the advantages that:
(1) method of the present invention solves with the method for catalytic oxidation the problem that resin goes out salinity water rising, electrocatalysis process utilizes the chlorion increased in resin ion exchange process to generate the oxygenant such as chlorine, hypochlorous acid, organism in further removal sewage, and playing disinfection, sterilisation effect continues and stablizes.By the coupling of two kinds of techniques, reduce the resin regeneration frequency, extend electrode life, reduce overall processing cost, the water outlet after process can direct reuse, greatly alleviates the problem of shortage of water resources;
(2) the magnetic acrylic acid series strongly basic anionite-exchange resin used in the present invention compares traditional polystyrene strongly basic anion exchange resin, due to its hydrophilic back bone structure, less grain diameter, loading capacity, adsorption rate, desorption rate all have significant advantage;
(3) the present invention uses inorganic salt for main composite regenerant, while ensureing good resin regeneration effect, does not introduce acid, alkali, makes the disposal of resin desorption liquid comparatively simple;
(4) the present invention adopt negative electrode and anode be all industrial widely used electrode, electrode life is longer, result of use stablize, price is lower, and cost performance is high;
(5) adopt method of the present invention, the water outlet after process can direct reuse, greatly alleviates the problem of shortage of water resources, and present method technique is simple, can realize automatic operating, is applicable to extensive sewage disposal;
(6) the present invention is compared with conventional depth treatment process, have technique simple, easy to operate, without adding of agent, non-secondary pollution, high treating effect.The serialization of city domestic sewage advanced treatment, automatic operating can be realized;
(7) present method technique is simple, has evaded the shortcoming that single further treatment technique exists separately, reduces overall processing cost, can be applied in the treatment of domestic sewage advanced process for regenerating, recovering and reutilizing of large-scale city.
Embodiment
Below in conjunction with specific embodiment the present invention done and describe further.
Embodiment 1
Certain 150,000 tons of sewage work's secondary biochemical effluent index: COD ≈ 60-80mg/L, colourity ≈ 55-60 degree (platinum-cobalt method), NH
3-N ≈ 15-20mg/L, Cl
-≈ 50-60mg/L.
Adopt the advanced treatment of city domestic sewage bio-chemical effluent of the present invention and reuse method to process above-mentioned sewage, the steps include:
(1) in upflowing pneumatic agitation advanced treatment reactor, (Nanjing University develops with magnetic acrylic acid series strongly basic anionite-exchange resin, the performance of this resin and preparation method's visible patent application 201010017687.1 content) contact reacts, this advanced treatment reactor can realize liquid-solid mixing, water flowing multiple 100 times, hydraulic detention time 60min;
(2) resin and water are carried out solid-liquid separation, the water outlet after separation passes into electrocatalysis oxidation reaction device; Resin after separation 90% is back to advanced treatment reactor, and 10% passes into regenerated reactor, regenerates in this regenerated reactor to resin, with 15%NaCl regeneration of waste liquor 30min, sends into advanced treatment reactor after regeneration; Regenerated liquid after inefficacy after film process or electrochemical treatment for preparing regenerator recycle in addition;
(3) water outlet after being separated passes in electrocatalysis oxidation reaction device and processes, current density 10mA/cm
2, reaction times 60min, interelectrode distance 2cm, anode adopts the steady electrode of ru oxide coated titanium base shape, and negative electrode adopts titanium plate.
Above-mentioned effluent quality: COD < 40mg/L, colourity < 5 degree (platinum-cobalt method), NH
3-N < 5mg/L, Cl
-< 20mg/L.
Embodiment 2
Certain 50,000 tons of sewage work's secondary biochemical effluent index: COD ≈ 60-70mg/L, colourity ≈ 50-55 degree (platinum-cobalt method), NH
3-N ≈ 10-12mg/L, Cl
-≈ 45-50mg/L.
Adopt the advanced treatment of city domestic sewage bio-chemical effluent of the present invention and reuse method to process above-mentioned sewage, the steps include:
(1) in steel mechanical stirring advanced treatment reactor, (Nanjing University develops with magnetic acrylic acid series strongly basic anionite-exchange resin, the performance of this resin and preparation method's visible patent application 201010017687.1 content) contact reacts, water flowing multiple 1000 times, hydraulic detention time 10min;
(2) water outlet in step (1) is carried out to the solid-liquid separation of resin and water, water outlet after separation passes into electrocatalysis oxidation reaction device, resin after separation 90% is back to the advanced treatment reactor in step (1), 10% passes into regenerated reactor 15%NaCl regeneration of waste liquor 30min, sends into advanced treatment reactor after regeneration; Regenerated liquid after inefficacy after film process or electrochemical treatment for preparing regenerator recycle in addition;
(3) water outlet after being separated passes in electrocatalysis oxidation reaction device and processes, current density 5mA/cm
2, reaction times 20min, interelectrode distance 2cm, anode adopts the steady electrode of iridium oxide coated titanium base shape, and negative electrode adopts graphite cake.
Effluent quality: COD < 30mg/L, colourity < 5 degree (platinum-cobalt method), NH
3-N < 5mg/L, Cl
-< 25mg/L.
Embodiment 3
Certain 300,000 tons of sewage work's secondary biochemical effluent index: COD ≈ 40-50mg/L, colourity ≈ 55-60 degree (platinum-cobalt method), NH
3-N ≈ 15-20mg/L, Cl
-≈ 180-200mg/L.
Adopt the advanced treatment of city domestic sewage bio-chemical effluent of the present invention and reuse method to process above-mentioned sewage, the steps include:
(1) in hydraulic mixing advanced treatment reactor, (Nanjing University develops with magnetic acrylic acid series strongly basic anionite-exchange resin, the performance of this resin and preparation method's visible patent application 201010017687.1 content) contact reacts, water flowing multiple 3000 times, hydraulic detention time 15min;
(2) solid-liquid separation is carried out to the water outlet in step (1), water outlet after separation passes into electrocatalysis oxidation reaction device, resin after separation 90% is back to advanced treatment reactor, 10% passes into regenerated reactor 15%NaCl regeneration of waste liquor 60min, sends into advanced treatment reactor after regeneration; Regenerated liquid after inefficacy is for preparing regenerator recycle in addition after film process or electrochemical treatment, and this advanced treatment reactor sent back to by the resin regenerated;
(3) water outlet after being separated passes into electrocatalysis oxidation apparatus process, current density 2mA/cm
2, reaction times 30min, interelectrode distance 2cm, anode adopts the steady electrode of iridium oxide coated titanium base shape, and negative electrode adopts the titanium plate of load ru oxide.
Effluent quality: COD < 30mg/L, colourity < 10 degree (platinum-cobalt method), NH
3-N < 5mg/L, Cl
-< 60mg/L.
Embodiment 4
Certain 200,000 tons of sewage work's secondary biochemical effluent index: COD ≈ 30-35mg/L, colourity ≈ 35-45 degree (platinum-cobalt method), NH
3-N ≈ 10-12mg/L, Cl
-≈ 80-100mg/L.
Adopt the advanced treatment of city domestic sewage bio-chemical effluent of the present invention and reuse method to process above-mentioned sewage, the steps include:
(1) in steel mechanical stirring advanced treatment reactor, (Nanjing University develops with magnetic acrylic acid series strongly basic anionite-exchange resin, the performance of this resin and preparation method's visible patent application 201010017687.1 content) contact reacts, water flowing multiple 2000 times, hydraulic detention time 40min;
(2) water outlet in step (1) is carried out to the solid-liquid separation of resin and water, water outlet after separation passes into electrocatalysis oxidation reaction device, resin after separation 90% is back to advanced treatment reactor, 10% passes into regenerated reactor 15%NaCl regeneration of waste liquor 40min, sends into advanced treatment reactor after regeneration; Regenerated liquid after inefficacy is for preparing regenerator recycle in addition after film process or electrochemical treatment, and this advanced treatment reactor sent back to by the resin regenerated;
(3) water outlet after being separated passes into electrocatalysis oxidation apparatus process, current density 6mA/cm
2, reaction times 15min, interelectrode distance 2cm, anode adopts the steady electrode of iridium oxide coated titanium base shape, and negative electrode adopts the titanium plate of load iridium oxide.
Effluent quality: COD < 20mg/L, colourity < 5 degree (platinum-cobalt method), NH
3-N < 5mg/L, Cl
-< 40mg/L.
Embodiment 5
Strong alkali resin in embodiment 4 is changed into Australian ORICA Products MIEX (Cl) magnetic powder resin, all the other conditions are identical.Effluent quality: COD < 25mg/L, colourity < 5 degree (platinum-cobalt method), NH
3-N < 8mg/L, Cl
-< 45mg/L.
Embodiment 6
Water flowing multiple in embodiment 3 is reduced to 1000 times, and hydraulic detention time lengthens as 25min, and all the other conditions are identical.Effluent quality: COD < 20mg/L, colourity < 5 degree (platinum-cobalt method), NH
3-N < 5mg/L, Cl
-< 60mg/L.
Embodiment 7
Current density in embodiment 3 is strengthened as 5mA/cm
2, all the other conditions are identical.Effluent quality: COD < 25mg/L, colourity < 5 degree (platinum-cobalt method), NH
3-N < 5mg/L, Cl
-< 50mg/L.
Embodiment 8
Current density in embodiment 2 is strengthened as 10mA/cm
2, the reaction times lengthens as 30min, and all the other conditions are identical.Effluent quality: COD < 20mg/L, colourity < 5 degree (platinum-cobalt method), NH
3-N < 5mg/L, Cl
-< 15mg/L.
Claims (3)
1. the advanced treatment of city domestic sewage bio-chemical effluent and a reuse method, the steps include:
(1) contact reacts in advanced treatment reactor by the municipal effluent after sewage work's secondary biochemical treatment and magnetic anion exchange resin, this advanced treatment reactor can realize liquid-solid mixing, water flowing multiple is 100-3000 times, and sewage hydraulic detention time is in the reactor 10-60min;
(2) water outlet in step (1) is carried out to the solid-liquid separation of resin and water, water outlet after separation passes into electrocatalysis oxidation reaction device, resin portion after separation is back to the advanced treatment reactor in step (1), and all the other send into regenerated reactor; Regenerate resin in this regenerated reactor, the regenerated liquid after inefficacy is for preparing regenerator recycle in addition after film process or electrochemical treatment, and this advanced treatment reactor sent back to by the resin regenerated;
In this step, by ion exchange technique and electro-catalytic oxidation technology coupling, the chlorion discharged in ion exchange process generates chlorine by catalytic oxidation, chlorine and water react and generate free chlorine, can effectively kill bacterium and intestinal bacteria, and the organic content removed further in water, reduce the salinity raised in ion exchange process simultaneously;
(3) the advanced treatment reactor water outlet described in carries out catalytic oxidation process in electrocatalysis oxidation reaction device, and current density is 2-10mA/cm
2, the reaction times is 1560min, and interelectrode distance is 2cm, and the water outlet processed directly is discharged or reuse;
Wherein, the magnetic anion exchange resin described in step (1) is magnetic acrylic acid series strongly basic anionite-exchange resin;
Wherein, the liquid-solid hybrid mode in step (1) comprises mechanical stirring, pneumatic agitation or hydraulic mixing.
2. the advanced treatment of a kind of city domestic sewage bio-chemical effluent according to claim 1 and reuse method, it is characterized in that, regenerator described in step (2) is the composite regenerant based on inorganic salt, in composite regenerant, Inorganic salt is 15% to saturation concentration, and the recovery time is 30-60min.
3. the advanced treatment of a kind of city domestic sewage bio-chemical effluent according to claim 1 and reuse method, it is characterized in that, electrocatalysis oxidation reaction device in step (3) negative electrode used is one of following three kinds: graphite cake, titanium plate, the titanium plate of load ru oxide or iridium oxide; Anode used is the steady electrode of titanium base shape, and coating is ru oxide or iridium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413629.9A CN104140175B (en) | 2014-08-20 | 2014-08-20 | A kind of advanced treatment of city domestic sewage bio-chemical effluent and reuse method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413629.9A CN104140175B (en) | 2014-08-20 | 2014-08-20 | A kind of advanced treatment of city domestic sewage bio-chemical effluent and reuse method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104140175A CN104140175A (en) | 2014-11-12 |
| CN104140175B true CN104140175B (en) | 2016-04-13 |
Family
ID=51849530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410413629.9A Active CN104140175B (en) | 2014-08-20 | 2014-08-20 | A kind of advanced treatment of city domestic sewage bio-chemical effluent and reuse method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104140175B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651815A (en) * | 2017-11-17 | 2018-02-02 | 南京大学 | A kind of magnetic resin promotes the method that denitrification removes nitrate nitrogen in water removal |
| CN110038647B (en) * | 2019-05-13 | 2021-06-11 | 南京大学 | Method for efficiently regenerating resin by using electrolytic salt solution |
| CN114380424B (en) * | 2022-01-28 | 2022-10-25 | 哈尔滨工业大学 | System and method for treating alkalescent secondary effluent by coupling magnetic ion exchange resin with catalytic ozone oxidation circulating reflux |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905931A (en) * | 2010-02-11 | 2010-12-08 | 南京大学 | Advanced treating method of biochemical tail water based on magnetic resin |
| CN102583849A (en) * | 2012-02-28 | 2012-07-18 | 天津工业大学 | Treatment technique of tetrabromobisphenol A production wastewater |
| CN103922534A (en) * | 2014-04-28 | 2014-07-16 | 南京大学 | Reclaimed water treatment method based on magnetic resin adsorption coupled electric adsorption |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339313C (en) * | 2003-06-19 | 2007-09-26 | 关西涂料株式会社 | Method for clarifying waste water containing organic material |
-
2014
- 2014-08-20 CN CN201410413629.9A patent/CN104140175B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905931A (en) * | 2010-02-11 | 2010-12-08 | 南京大学 | Advanced treating method of biochemical tail water based on magnetic resin |
| CN102583849A (en) * | 2012-02-28 | 2012-07-18 | 天津工业大学 | Treatment technique of tetrabromobisphenol A production wastewater |
| CN103922534A (en) * | 2014-04-28 | 2014-07-16 | 南京大学 | Reclaimed water treatment method based on magnetic resin adsorption coupled electric adsorption |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104140175A (en) | 2014-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lin et al. | Synergistic effects of oxidation, coagulation and adsorption in the integrated fenton-based process for wastewater treatment: A review | |
| CN101781054B (en) | Method for utilizing three-dimensional electrode coagulation combination to carry out advanced treatment on coking wastewater | |
| CN102992523B (en) | Reverse osmosis concentrated wastewater treatment method | |
| CN106277591A (en) | Percolate nanofiltration concentrated solution processing method | |
| WO2020228638A1 (en) | Method for efficiently regenerating resin by using electrolytic salt solution | |
| CN101092262A (en) | Preparation method of treating wastewater from middle stage of straw pulp papermaking | |
| CN103613254B (en) | The deep treatment method of fine chemistry industry garden sewage work organic wastewater with difficult degradation thereby | |
| CN105948343A (en) | Method for conducting dynamic three-dimensional electro-catalysis and purification on dyeing wastewater through nanometer microbubbles | |
| WO2015165234A1 (en) | Method for decontamination treatment and utilization as resource of ion exchange resin desorption solution | |
| CN108423893A (en) | Secondary effluent of municipal sewage plant regeneration treatment system and its secondary effluent regeneration treating method | |
| CN104140175B (en) | A kind of advanced treatment of city domestic sewage bio-chemical effluent and reuse method | |
| CN109626672A (en) | Based on nitrate nitrogen method in electrochemistry and resin combination technique advanced treatment of waste water | |
| CN102502946A (en) | Method for treating chemical wastewater by utilizing three-dimensional electrode-biological membrane process | |
| CN105347625A (en) | Method for removing nitrate in underground water and reactor | |
| CN108862472A (en) | A kind of advanced waste treatment method of ion exchange resin and the integrated removing nitrate nitrogen of electrochemistry | |
| CN102381787B (en) | Decoloration method for fermentation wastewater biochemical treatment tail water | |
| CN202865053U (en) | Processing device for wastewater form circulating cooling water and reverse osmosis concentrated water | |
| CN106745536A (en) | The method that electrolysis electrocatalytic oxidation binding resin exchanges the dirty Organic substance in water of removing | |
| CN103435181B (en) | A kind of efficient process of chemical wastewater biochemical water outlet and reuse method | |
| CN101973659A (en) | Device and method for refining waste water by treating vitamin B12 by means of co-use of micro-electrolysis and physicochemical method | |
| CN111333235A (en) | Landfill leachate treatment system and process | |
| CN108640417A (en) | A kind of new method of electrochemistry and microbiological fuel cell combined treatment waste water from dyestuff | |
| CN102372337B (en) | Method for advanced treatment and recycle of papermaking wastewater | |
| CN106554128B (en) | A kind of processing method of amine liquid regenerating unit spent lye | |
| CN211198890U (en) | Industrial wastewater treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |