CN108249704A - The treatment process of brown oxide waste liquid produced by a kind of printing PCB circuit board - Google Patents
The treatment process of brown oxide waste liquid produced by a kind of printing PCB circuit board Download PDFInfo
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- CN108249704A CN108249704A CN201810101940.8A CN201810101940A CN108249704A CN 108249704 A CN108249704 A CN 108249704A CN 201810101940 A CN201810101940 A CN 201810101940A CN 108249704 A CN108249704 A CN 108249704A
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0084—Treating solutions
- C22B15/0089—Treating solutions by chemical methods
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
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- 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
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- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- 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
- C02F1/722—Oxidation by peroxides
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a kind for the treatment of process of brown oxide waste liquid produced by printing PCB circuit board, and the copper of complex state in brown oxide waste liquid is changed into the copper of ionic state by being chemically treated；After electrolysis processing mode is taken to extract elemental copper valuable in brown oxide waste liquid；Biological treatment mode is taken, realizes that each pollutant index of brown oxide waste liquid is greatly reduced, brown oxide waste liquid caused by printing PCB circuit board is made to realize qualified discharge, flow is ingenious, easy to operate, has a good application prospect.
Description
Technical field
The present invention relates to PCB circuit board manufacturing technology fields, and in particular to brown produced by a kind of printing PCB circuit board is given up
The treatment process of liquid.
Background technology
In the manufacturing process of printing PCB circuit board, need to promote copper foil surface and polymer using brown treatment technology
The bonding of inorganic/organic interface is realized between resin.The essence of brown treatment technology is that copper is oxidized to oxidation in acid condition
Cuprous (Cu2O), the surface film that cuprous oxide is formed is completely fine and close, and the combination of fluoropolymer resin is extremely secured, ensures PCB
Electric conductivity between circuit board multilayer is good.
At present, common brown treatment technology, including following process：Pickling → alkali cleaning → preimpregnation → brown, wherein, brown
Reaction is an erosion copper reaction, and with the progress of browning reaction, the copper ion constantly accumulation in brown liquid causes brown to fail, when
The copper ion of brown liquid needs the method by overflow that new liquid is continuously replenished after reaching limit standard, it is ensured that brown effect, still, together
When can generate a large amount of brown oxide waste liquids.
Due to the main component of, brown oxide waste liquid be the sulfuric acid of high concentration, hydrogen peroxide, copper micro-etching agent, stabilizer with it is a large amount of
Product after the compound of the Various Complexes such as copper ion and reaction, brown oxide waste liquid contain a large amount of harmful substance, direct emission meeting
It destroys the ecological balance, be detrimental to health.At present, common brown oxide waste liquid disposal plant, including chemical settling device, electrolysis dress
It puts, extraction equipment, electrodialysis plant and adsorbent equipment；Wherein, electrolysis unit application is wider, still, existing electrolysis unit into
Capable treatment process effect is undesirable, there are problems that copper recovery is low, complicated for operation, high energy consumption, is not energy-saving and environment-friendly.
How to overcome the problems of electrolysis brown oxide waste liquid, be that current urgent need solves.
Invention content
The purpose of the present invention is overcoming existing electrolysis brown oxide waste liquid effect undesirable, there are copper recovery is low, operation is multiple
Miscellaneous, high energy consumption, the problem of being not energy-saving and environment-friendly.The treatment process of brown oxide waste liquid produced by the printing PCB circuit board of the present invention, leads to
Cross the copper that the copper of complex state in brown oxide waste liquid is changed into ionic state by chemical treatment；Take electrolysis processing mode will be in brown oxide waste liquid
After valuable elemental copper extracts；Biological treatment mode is taken, realizes that each pollutant index of brown oxide waste liquid is greatly reduced, reaches
Mark discharge, flow is ingenious, easy to operate, has a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is：
The treatment process of brown oxide waste liquid, includes the following steps produced by a kind of printing PCB circuit board,
Step (A) adds in the ferrous sulfate of 0.6-1g in every liter of brown oxide waste liquid, meets the condition of Fenton oxidation；
Step (B), brown oxide waste liquid carries out Fenton oxidation by the complex copper oxidative degradation in brown oxide waste liquid, by the copper of complex state
It is changed into the copper of ionic state；
Step (C), the brown oxide waste liquid pH value after Fenton oxidation reaction add alkali to adjust pH value to 4.5- between 2.0-2.5
5.5；Meanwhile suitable flocculant PFS, PAM are added in, wherein every liter of brown oxide waste liquid addition flocculant PFS is 0.8g, every liter of brown
Waste liquid addition flocculant PAM is 0.5g；
Step (D), by step (C), treated, and brown oxide waste liquid is placed into electrolytic cell, and brown oxide waste liquid is in the moon of electrolytic cell
It is reacted as follows with occurring at anode pole：
Cathode Cu2++ 2e-=Cu
Anode 2H2O+O2+ 2e-=4OH-
After the completion of being electrolysed, the copper drying that catholyte goes out is peeled, recycling obtains elemental copper, at this point, the brown oxide waste liquid
In copper ion drop to 0.5g/L, and the pH value of the brown oxide waste liquid after being electrolysed is promoted to 2-3；
Step (E) to step (D) treated brown oxide waste liquid, adds alkali to adjust pH value to 7-8, and be placed into biology
In processing unit, biological treatment is carried out；
Step (F) carries out water quality monitoring to the water quality after completion biological treatment, if reaching discharge standard, can be discharged；
If discharge standard is not achieved, step (E) is repeated, until reaching discharge standard.
The treatment process of brown oxide waste liquid produced by aforementioned printing PCB circuit board, the flocculant PFS are polyaluminum sulfate
Iron；The flocculant PAM is polyacrylamide.
The treatment process of brown oxide waste liquid produced by aforementioned printing PCB circuit board, step (D), the current density of electrolytic cell
For 200-400A/m2。
The treatment process of brown oxide waste liquid produced by aforementioned printing PCB circuit board, by the pH value of the brown oxide waste liquid after electrolysis
It is promoted to 3.
5th, the treatment process of brown oxide waste liquid produced by printing PCB circuit board according to claim 1, feature exist
In：Step (E) carries out biological treatment, includes the following steps,
(E1), Anaerobic Treatment
Macromolecule organic in brown oxide waste liquid is resolved into small organic molecule by anaerobic organism bacterium, this Anaerobic Treatment mistake
Cheng Wuxu additionally adds nutrient, using the small organic molecule in brown oxide waste liquid as nutrient, without aeration, the dissolving of the Anaerobic Treatment
Oxygen concentration is 0, and the pH value of the brown oxide waste liquid after Anaerobic Treatment is made to control between 6.5-7；
(E2), anoxic treatment
By nitrate denitrification in the organic matter in brown oxide waste liquid into nitrogen；Meanwhile by the small organic molecule of anaerobism section
Further hydrolysis, is converted into the smaller organic matter of carbon dioxide, methane, the dissolved oxygen concentration of the anoxic treatment for 0.5ppm with
Under, the pH value of the brown oxide waste liquid after Anaerobic Treatment is made to control between 7-7.5；
(E3), Aerobic Process for Treatment
Dissolved oxygen is provided into brown oxide waste liquid by aerator, it will be organic in brown oxide waste liquid using a large amount of dissolved oxygen
An object more step oxygenolysis be carbon dioxide and water, the simultaneously synthesizing cellular material of itself, the dissolved oxygen concentration of the Aerobic Process for Treatment
Between 3-3.5ppm, the pH value of the brown oxide waste liquid after Aerobic Process for Treatment is made to control between 8-8.5.
The treatment process of brown oxide waste liquid produced by aforementioned printing PCB circuit board, (E1), the brown oxide waste liquid after Anaerobic Treatment
PH value control for 6.5；(E2), the pH value control of the brown oxide waste liquid after Anaerobic Treatment is 7；(E3), the brown after Aerobic Process for Treatment
The pH value control of waste liquid is 8.
The treatment process of brown oxide waste liquid produced by aforementioned printing PCB circuit board, (E1), by the macromolecule in brown oxide waste liquid
Organic matter resolves into small organic molecule, the macromolecule organic, including example azole, pyrroles, EDTA, benzene by anaerobic organism bacterium
Sulphonic acids and Thioglycolic acid type organic；The small organic molecule, including formic acid class, acetic acid class and methane organic matter.
The beneficial effects of the invention are as follows：The treatment process of brown oxide waste liquid, passes through produced by the printing PCB circuit board of the present invention
The copper of complex state in brown oxide waste liquid is changed into the copper of ionic state by chemical treatment；Take electrolysis processing mode that will have in brown oxide waste liquid
After the elemental copper of value extracts；Biological treatment mode is taken, realizes that each pollutant index of brown oxide waste liquid is greatly reduced, it is up to standard
Discharge, flow is ingenious, easy to operate, has a good application prospect.
Description of the drawings
Fig. 1 is the structure diagram of the treatment process of brown oxide waste liquid produced by the printing PCB circuit board of the present invention.
Specific embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, the treatment process of brown oxide waste liquid produced by the printing PCB circuit board of the present invention, includes the following steps,
Step (A) adds in the ferrous sulfate of 0.6-1g in every liter of brown oxide waste liquid, meets the condition of Fenton oxidation；
Step (B), brown oxide waste liquid carries out Fenton oxidation by the complex copper oxidative degradation in brown oxide waste liquid, by the copper of complex state
It is changed into the copper of ionic state；
Step (C), the brown oxide waste liquid pH value after Fenton oxidation reaction add alkali to adjust pH value to 4.5- between 2.0-2.5
5.5；Meanwhile suitable flocculant PFS, PAM are added in, wherein every liter of brown oxide waste liquid addition flocculant PFS is 0.8g, every liter of brown
Waste liquid addition flocculant PAM is 0.5g, and the flocculant PFS is bodied ferric sulfate；The flocculant PAM is polyacrylamide；
Step (D), by step (C), treated, and brown oxide waste liquid is placed into electrolytic cell, and brown oxide waste liquid is in the moon of electrolytic cell
It is reacted as follows with occurring at anode pole：
Cathode Cu2++ 2e-=Cu
Anode 2H2O+O2+ 2e-=4OH-
After the completion of being electrolysed, the copper drying that catholyte goes out is peeled, recycling obtains elemental copper, at this point, the brown oxide waste liquid
In copper ion drop to 0.5g/L, and the pH value of the brown oxide waste liquid after being electrolysed is promoted to 2-3, is by the current density of electrolytic cell
200-400A/m2, the pH value of the brown oxide waste liquid after electrolysis is preferably promoted to 3；
Step (E) to step (D) treated brown oxide waste liquid, adds alkali to adjust pH value to 7-8, and be placed into biology
In processing unit, biological treatment is carried out, is included the following steps,
(E1), Anaerobic Treatment
Macromolecule organic in brown oxide waste liquid is resolved into small organic molecule by anaerobic organism bacterium, this Anaerobic Treatment mistake
Cheng Wuxu additionally adds nutrient, using the small organic molecule in brown oxide waste liquid as nutrient, without aeration, the dissolving of the Anaerobic Treatment
Oxygen concentration is 0, and the pH value of the brown oxide waste liquid after Anaerobic Treatment is made to control between 6.5-7, preferable ph 6.5, wherein, it is described
Macromolecule organic, including example azole, pyrroles, EDTA (ethylenediamine tetra-acetic acid class), benzene sulfonic acid class and Thioglycolic acid type organic；
The small organic molecule, including formic acid class, acetic acid class and methane organic matter；
(E2), anoxic treatment
By nitrate denitrification in the organic matter in brown oxide waste liquid into nitrogen；Meanwhile by the small organic molecule of anaerobism section
Further hydrolysis, is converted into the smaller organic matter of carbon dioxide, methane, the dissolved oxygen concentration of the anoxic treatment for 0.5ppm with
Under, the pH value of the brown oxide waste liquid after Anaerobic Treatment is made to control between 7-7.5, preferable ph 7；
(E3), Aerobic Process for Treatment
Dissolved oxygen is provided into brown oxide waste liquid by aerator, it will be organic in brown oxide waste liquid using a large amount of dissolved oxygen
An object more step oxygenolysis be carbon dioxide and water, the simultaneously synthesizing cellular material of itself, the dissolved oxygen concentration of the Aerobic Process for Treatment
Between 3-3.5ppm, the pH value of the brown oxide waste liquid after Aerobic Process for Treatment is made to control between 8-8.5, preferable ph 8,
It, can be by dirts such as COD, nitrogen, the phosphorus in brown oxide waste liquid after anaerobism, anoxic, aerobic three biological treatment steps
Object is contaminated by biological decomposition, and concentration declines to a great extent, and reaches qualified discharge after discharging standards to realize；
Step (F) carries out water quality monitoring to the water quality after completion biological treatment, if reaching discharge standard, can be discharged；
If discharge standard is not achieved, step (E) is repeated, until reaching discharge standard.
The treatment process of brown oxide waste liquid, handles brown oxide waste liquid produced by printing PCB circuit board according to the present invention
Effect afterwards and the effect of existing way processing, compare shown in table following table,
Remarks：More than pollutant concentration value is average value.
From upper table, it is apparent that, the treatment process of brown oxide waste liquid produced by printing PCB circuit board of the invention can
Substantially reduce the content of COD in brown oxide waste liquid, ammonia nitrogen, total nitrogen, total phosphorus, total copper pollutant.
In conclusion the treatment process of brown oxide waste liquid produced by the printing PCB circuit board of the present invention, it will by being chemically treated
The copper of complex state is changed into the copper of ionic state in brown oxide waste liquid；Electrolysis processing mode is taken by simple substance valuable in brown oxide waste liquid
After copper extracts；Biological treatment mode is taken, realizes that each pollutant index of brown oxide waste liquid is greatly reduced, qualified discharge, flow
It is ingenious, it is easy to operate, it has a good application prospect.
Basic principle, the main features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (7)
1. a kind for the treatment of process of brown oxide waste liquid produced by printing PCB circuit board, it is characterised in that：Include the following steps,
Step (A) adds in the ferrous sulfate of 0.6-1g in every liter of brown oxide waste liquid, meets the condition of Fenton oxidation；
Step (B), brown oxide waste liquid carry out Fenton oxidation by the complex copper oxidative degradation in brown oxide waste liquid, the copper of complex state are changed
Copper for ionic state；
Step (C), the brown oxide waste liquid pH value after Fenton oxidation reaction add alkali to adjust pH value to 4.5-5.5 between 2.0-2.5；
Meanwhile suitable flocculant PFS, PAM are added in, wherein every liter of brown oxide waste liquid addition flocculant PFS is 0.8g, every liter of brown oxide waste liquid
It is 0.5g to add flocculant PAM；
Step (D), by step (C), treated, and brown oxide waste liquid is placed into electrolytic cell, brown oxide waste liquid electrolytic cell cathode with
Following reaction occurs at anode：
Cathode Cu2++ 2e-=Cu
Anode 2H2O+O2+ 2e-=4OH-
After the completion of being electrolysed, the copper drying that catholyte goes out is peeled, recycling obtains elemental copper, at this point, in the brown oxide waste liquid
Copper ion drops to 0.5g/L, and the pH value of the brown oxide waste liquid after electrolysis is promoted to 2-3；
Step (E) to step (D) treated brown oxide waste liquid, adds alkali to adjust pH value to 7-8, and be placed into biological treatment
In device, biological treatment is carried out；
Step (F) carries out water quality monitoring to the water quality after completion biological treatment, if reaching discharge standard, can be discharged；If it reaches
Less than discharge standard, step (E) is repeated, until reaching discharge standard.
2. the treatment process of brown oxide waste liquid produced by printing PCB circuit board according to claim 1, it is characterised in that：Institute
Flocculant PFS is stated as bodied ferric sulfate；The flocculant PAM is polyacrylamide.
3. the treatment process of brown oxide waste liquid produced by printing PCB circuit board according to claim 1, it is characterised in that：Step
Suddenly (D), the current density of electrolytic cell is 200-400A/m2。
4. the treatment process of brown oxide waste liquid produced by printing PCB circuit board according to claim 3, it is characterised in that：It will
The pH value of brown oxide waste liquid after electrolysis is promoted to 3.
5. the treatment process of brown oxide waste liquid produced by printing PCB circuit board according to claim 1, it is characterised in that：Step
Suddenly (E) carries out biological treatment, includes the following steps,
(E1), Anaerobic Treatment
Macromolecule organic in brown oxide waste liquid is resolved into small organic molecule by anaerobic organism bacterium, this Anaerobic Treatment process without
Nutrient need to be additionally added, using the small organic molecule in brown oxide waste liquid as nutrient, without aeration, the dissolved oxygen of the Anaerobic Treatment is dense
It is 0 to spend, and the pH value of the brown oxide waste liquid after Anaerobic Treatment is made to control between 6.5-7；
(E2), anoxic treatment
By nitrate denitrification in the organic matter in brown oxide waste liquid into nitrogen；Meanwhile by the small organic molecule of anaerobism section into one
One-step hydrolysis, is converted into the smaller organic matter of carbon dioxide, methane, and the dissolved oxygen concentration of the anoxic treatment is 0.5ppm hereinafter, making
The pH value of brown oxide waste liquid after Anaerobic Treatment is controlled between 7-7.5；
(E3), Aerobic Process for Treatment
Dissolved oxygen is provided into brown oxide waste liquid by aerator, using a large amount of dissolved oxygen by the organic matter in brown oxide waste liquid more
One step oxygenolysis is carbon dioxide and water, and the simultaneously synthesizing cellular material of itself, the dissolved oxygen concentration of the Aerobic Process for Treatment is 3-
Between 3.5ppm, the pH value of the brown oxide waste liquid after Aerobic Process for Treatment is made to control between 8-8.5.
6. the treatment process of brown oxide waste liquid produced by printing PCB circuit board according to claim 5, it is characterised in that：
(E1), the pH value control of the brown oxide waste liquid after Anaerobic Treatment is 6.5；(E2), the pH value control of the brown oxide waste liquid after Anaerobic Treatment
It is 7；(E3), the pH value control of the brown oxide waste liquid after Aerobic Process for Treatment is 8.
7. the treatment process of brown oxide waste liquid produced by printing PCB circuit board according to claim 5, it is characterised in that：
(E1), the macromolecule organic in brown oxide waste liquid is resolved into small organic molecule by anaerobic organism bacterium, the macromolecule is organic
Object, including example azole, pyrroles, EDTA, benzene sulfonic acid class and Thioglycolic acid type organic；The small organic molecule, including formic acid
Class, acetic acid class and methane organic matter.
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Cited By (10)
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| CN108409003A (en) * | 2018-04-04 | 2018-08-17 | 深圳市深投环保科技有限公司 | The processing method and system of salt-containing organic wastewater after the recycling of PCB waste water copper |
| CN109133497A (en) * | 2018-08-02 | 2019-01-04 | 深圳市华星光电技术有限公司 | Liquid waste treating apparatus and method for treating waste liquid |
| CN110294546A (en) * | 2019-05-07 | 2019-10-01 | 深圳市浩天源环保科技有限公司 | A kind of brown oxide waste liquid processing method |
| CN110342628A (en) * | 2019-06-13 | 2019-10-18 | 南京工业大学 | Treatment method of complex copper wastewater |
| CN110862165A (en) * | 2018-08-28 | 2020-03-06 | 深南电路股份有限公司 | Waste liquid treatment method |
| CN110894125A (en) * | 2019-09-25 | 2020-03-20 | 镇江新纳环保材料有限公司 | Sewage treatment process for recycling N-methyl pyrrolidone |
| CN111039363A (en) * | 2019-12-25 | 2020-04-21 | 同济大学 | Electrochemical coupling membrane separation self-induced Fenton-like copper complex breaking and strengthening removal device and application thereof |
| CN113387494A (en) * | 2021-06-10 | 2021-09-14 | 深圳星河环境股份有限公司 | Method for removing and refining copper sulfate based on organic matters |
| CN113620485A (en) * | 2021-09-14 | 2021-11-09 | 万安裕维电子有限公司 | Treatment method of PCB production waste liquid |
| CN114314954A (en) * | 2021-12-06 | 2022-04-12 | 深圳市祺鑫环保科技有限公司 | Brown waste liquid treatment process |
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| CN110294546A (en) * | 2019-05-07 | 2019-10-01 | 深圳市浩天源环保科技有限公司 | A kind of brown oxide waste liquid processing method |
| CN110342628A (en) * | 2019-06-13 | 2019-10-18 | 南京工业大学 | Treatment method of complex copper wastewater |
| CN110894125A (en) * | 2019-09-25 | 2020-03-20 | 镇江新纳环保材料有限公司 | Sewage treatment process for recycling N-methyl pyrrolidone |
| CN111039363A (en) * | 2019-12-25 | 2020-04-21 | 同济大学 | Electrochemical coupling membrane separation self-induced Fenton-like copper complex breaking and strengthening removal device and application thereof |
| CN113387494A (en) * | 2021-06-10 | 2021-09-14 | 深圳星河环境股份有限公司 | Method for removing and refining copper sulfate based on organic matters |
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