CN116177824B - High-concentration organic industrial wastewater treatment process - Google Patents
High-concentration organic industrial wastewater treatment process Download PDFInfo
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- CN116177824B CN116177824B CN202310465180.XA CN202310465180A CN116177824B CN 116177824 B CN116177824 B CN 116177824B CN 202310465180 A CN202310465180 A CN 202310465180A CN 116177824 B CN116177824 B CN 116177824B
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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
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F3/30—Aerobic and anaerobic processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
Abstract
The application belongs to a wastewater treatment process, and particularly discloses a high-concentration organic industrial wastewater treatment process, which comprises the following steps: the process is characterized by comprising a filtering process, a mixing process, a sedimentation treatment process, a solid-liquid separation process, a mixing process, an iron-carbon process, a secondary sedimentation process and a biochemical process, wherein the process is used for carrying out targeted treatment according to different waste water in the PCB waste water, and the treatment of waste water by utilizing the characteristics of various waste water can be realized, so that the waste water treatment cost and the waste water treatment effect can be greatly reduced.
Description
Technical Field
The application relates to a wastewater treatment process, in particular to a high-concentration organic industrial wastewater treatment process.
Background
The waste water of the printed circuit board can be generally divided into heavy metal waste water, printing ink waste water, complex waste water, concentrated acid waste liquid, concentrated alkali waste liquid and other waste water types according to the difference of main pollutants, and the printing ink waste water mainly comes from the procedures of screen printing, developing, stripping and the like in the production process of the circuit board. The PCB ink wastewater is a high-concentration organic wastewater, and CODcr is usually 5000-10000mg/L, and some of the wastewater can reach 20000mg/L. CN105439324B discloses a method and system for treating PCB ink wastewater, which comprises adding polymeric ferric sulfate into PCB ink wastewater to accelerate sedimentation of particulate matter; adding sulfuric acid, and fully separating out insoluble substances from a photosensitive film in the wastewater under an acidic condition through an acid precipitation reaction; thirdly, naOH is added to facilitate the precipitation of the subsequent flocculant; and fourthly, adding a polymeric flocculant to promote aggregation of particles and granules so as to accelerate precipitation of insoluble substances. However, a large amount of sulfuric acid and sodium hydroxide are consumed in the treatment process, polymeric ferric sulfate and polymeric flocculant are added, and although the treatment effect is good, the treatment cost is high, and a large amount of metal ions and polymeric substances are also introduced. CN102515436a discloses a wastewater treatment process in a PCB industrial park, wherein in the biochemical process of the complexing wastewater, the acid waste liquid, the organic wastewater and the organic wastewater, the wastewater sequentially passes through: anaerobic tank-aerobic tank-MBR tank-clean water tank-ultraviolet disinfection-discharge. The treatment method directly carries out biochemical technology, and the water quality characteristics of various waste water are difficult to utilize. If different waste water can be processed in a targeted way, and the treatment of waste by waste is realized by utilizing the characteristics of various waste water, the cost and the effect of waste water treatment can be greatly reduced.
Therefore, how to efficiently treat the high-concentration wastewater with different water quality characteristics in the PCB production wastewater becomes the current urgent problem to be solved.
The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The application aims to provide a high-concentration organic industrial wastewater treatment process which utilizes the characteristics of different water qualities in PCB wastewater to comprehensively treat and can be used for efficiently treating the PCB high-concentration organic wastewater.
To achieve the above object, an embodiment of the present application provides a process for treating high-concentration organic industrial wastewater, comprising:
(1) The filtering process comprises the following steps: delivering the ink wastewater to a filtering process for treatment, and delivering the filtered concentrated solution to a first mixing tank;
(2) Mixing a process: conveying the acidic wastewater to a first mixing tank for mixing treatment with the concentrated solution, and conveying to a sedimentation treatment process;
(3) The sedimentation treatment process comprises the following steps: adding dried sludge into the sedimentation treatment process;
(4) Solid-liquid separation: carrying out solid-liquid separation on the mixed liquid in the sedimentation treatment process, and carrying out filter pressing and crushing treatment on the separated solid to obtain crushed sludge;
(5) Mixing two processes: conveying the crushed sludge to a mixing two process for mixing treatment with alkaline wastewater, and conveying the sludge obtained after sedimentation treatment to an incineration process for incineration;
(6) Iron-carbon process: delivering the filtered process fresh water to the iron-carbon process for treatment, and delivering the iron-carbon process to a mixing tank III for mixing treatment with the water discharged from the mixing tank II;
(7) Secondary sedimentation treatment: after the third mixing tank is subjected to sedimentation treatment, conveying the supernatant and domestic sewage to a biochemical process;
in one or more embodiments of the application, the filtration process is an ultrafiltration process;
in one or more embodiments of the present application, the method further comprises a nanofiltration process, wherein heavy metal wastewater is sent to a nanofiltration process for treatment, and nanofiltration process concentrate is sent to the ultrafiltration process;
in one or more embodiments of the present application, an ion exchange process is provided between the nanofiltration process and the ultrafiltration process;
in one or more embodiments of the application, the supernatant produced by the sedimentation treatment process is sent to the iron-carbon process treatment;
in one or more embodiments of the application, the biochemical process includes anaerobic process, aerobic process, and MBR process;
in one or more embodiments of the application, the addition amount of the dried sludge is 20-40g/L;
in one or more embodiments of the present application, the anaerobic process, the aerobic process and the MBR process are provided with an excess sludge discharge pipe, and the excess sludge discharge pipe is conveyed to an anoxic fermentation tank for acidification treatment;
in one or more embodiments of the application, the anoxic fermentation tank effluent is transported to the mixing tank one;
in one or more embodiments of the present application, the addition of the acidic wastewater, the filtered concentrate, and the effluent of the anoxic fermentation tank is determined by the pH in the first mixing tank, and the pH is adjusted to 3.5 to 4.5;
in one or more embodiments of the application, a strongly acidic ion exchange resin is used in the ion exchange process;
in one or more embodiments of the present application, the heavy metal wastewater, the ink wastewater, the acid wastewater, and the alkaline wastewater are all wastewater generated in the production process of the printed circuit board;
in one or more embodiments of the present application, the high concentration organic industrial wastewater is printed wiring board wastewater;
compared with the prior art, the embodiment of the application has the following advantages:
(1) The PCB ink wastewater is the wastewater which is most difficult to treat in the PCB wastewater, acid, flocculant and alkali are added into the wastewater to reduce the ink content in the prior art, and the application utilizes the water quality of different types of wastewater in the PCB wastewater, realizes the pH adjustment of the ink wastewater by utilizing the hydrogen ions, the acid wastewater and the residual sludge acidification process in the wastewater after heavy metal wastewater ion exchange to acidify the wastewater, so that the ink forms colloidal condensate, and simultaneously utilizes the mixture of the dried sludge and the colloidal condensate to form sedimentation treatment;
(2) Mixing the generated crushed sludge with the alkaline wastewater, wherein the crushed sludge is acidic sludge, the pH value of the crushed sludge is improved while the pH value of the alkaline wastewater is reduced, so that the incineration efficiency of the crushed sludge is higher in the incineration treatment process;
(3) The pH of the ink wastewater is reduced after the ink wastewater is mixed with supernatant fluid of a sedimentation treatment process after the ink wastewater is subjected to filtration treatment, so that the treatment effect of the iron-carbon process is greatly improved, and the pH adjustment is not required to be carried out by using acid additionally;
(4) In the mixing process of the effluent of the iron-carbon process and the effluent of the mixing tank II, as the alkaline wastewater and iron ions contained in the iron-carbon process can form sedimentation, suspended particles in the wastewater can be further reduced, acid and alkali are neutralized, and the effluent meets the biochemical process requirements;
drawings
FIG. 1 is a schematic illustration of a high concentration organic industrial wastewater treatment process according to an embodiment of the present application;
Detailed Description
The following detailed description of embodiments of the application is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the application is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
Example 1
As shown in fig. 1, a high concentration organic industrial wastewater treatment process according to a preferred embodiment of the present application includes:
(1) The filtering process comprises the following steps: delivering the ink wastewater to a filtering process for treatment, wherein the CODcr of the ink wastewater is 8900mg/L, the SS of the ink wastewater is 1050mg/L, the pH value of the ink wastewater is 8.4, and delivering the filtered concentrated solution to a first mixing tank, wherein the filtering process is an ultrafiltration process;
(2) Mixing a process: conveying the acidic wastewater to a first mixing tank and the concentrated solution for mixing treatment, and then conveying the acidic wastewater to a sedimentation treatment process, and adjusting the pH value in the first mixing process to 3.5-4.5;
(3) The sedimentation treatment process comprises the following steps: adding dried sludge into the sedimentation treatment process, wherein the addition amount of the dried sludge is 20-40g/L;
(4) Solid-liquid separation: carrying out solid-liquid separation on the mixed liquid in the sedimentation treatment process, and carrying out filter pressing and crushing treatment on the separated solid to obtain crushed sludge, wherein the water content of the crushed sludge is controlled to be 40%, 50%, 60%, 70% and 80%, and the energy consumption is the lowest when the water content is 50-70%, so that the water content of the crushed sludge is controlled to be 50-70%;
(5) Mixing two processes: conveying the crushed sludge to a mixing two process for mixing treatment with alkaline wastewater, and conveying the sludge obtained after sedimentation treatment to an incineration process for incineration;
(6) Iron-carbon process: delivering the filtered process fresh water to the iron-carbon process for treatment, and delivering the iron-carbon process to a mixing tank III for mixing treatment with the water discharged from the mixing tank II;
(7) Secondary sedimentation treatment: after the third mixing tank is subjected to sedimentation treatment, conveying the supernatant and domestic sewage to a biochemical process; the method also comprises a nanofiltration process, heavy metal wastewater is conveyed to the nanofiltration process for treatment, concentrated water of the nanofiltration process is conveyed to the ultrafiltration process, an ion exchange process is arranged between the nanofiltration process and the ultrafiltration process, and supernatant liquid generated by the sedimentation treatment process is conveyed to the iron-carbon process for treatment;
the addition amount of the dried sludge is 20 g/L, 30g/L and 40g/L, wherein the effect is most obvious when the addition amount is 30g/L, and the treatment effect is not obviously improved along with the increase of the sludge amount. Therefore, the addition amount is selected to be 30g/L;
the pH values in the mixing process are respectively controlled at 3.5, 3.7, 3.9, 4.0, 4.3 and 4.5, and the CODcr removal rate in the effluent of the sedimentation treatment process is respectively 34.5%, 41.2%, 43.4%, 40.8%, 36.9% and 32.1%, so that the treatment effect is best when the pH value is 3.9;
the CODcr of the effluent after biochemical treatment is 68mg/L and ss is 2.5mg/L. Biochemical process of sedimentation treatment process
Example 2
In one or more embodiments of the present application, the biochemical process includes an anaerobic process, an aerobic process, and an MBR process, each of which is provided with an excess sludge gauntlet, and the excess sludge gauntlet is conveyed to an anoxic fermentation tank for acidification treatment; the effluent of the anoxic fermentation tank is conveyed to the first mixing tank; the adding amount of the acid wastewater, the filtered concentrated solution and the effluent of the anoxic fermentation tank is determined by the pH value in the first mixing tank, and the pH value is adjusted to 3.5-4.5;
the pH values in the mixing process are respectively controlled at 3.5, 3.7, 3.9, 4.0, 4.3 and 4.5, and the CODcr removal rates in the effluent of the sedimentation treatment process are respectively 39.6%, 47.1%, 52.6%, 43.2%, 41.3% and 36.5%, so that when the effluent of the anoxic pond is added to adjust the pH value, the active sludge is mixed in the effluent in the acidification process, and the active sludge has a capturing effect on colloidal aggregates, thereby strengthening the solid sedimentation effect.
The foregoing descriptions of specific exemplary embodiments of the present application are presented for purposes of illustration and description. It is not intended to limit the application to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the application and its practical application to thereby enable one skilled in the art to make and utilize the application in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the application be defined by the claims and their equivalents.
Claims (2)
1. A process for treating high concentration organic industrial wastewater, comprising: (1) a filtration process: the method comprises the steps of conveying ink wastewater to a filtering process for treatment, wherein the filtering process is an ultrafiltration process, and conveying filtered concentrated solution to a first mixing tank; (2) mixing a process: conveying the acidic wastewater to a first mixing tank for mixing treatment with the concentrated solution, and conveying to a sedimentation treatment process; (3) sedimentation treatment process: adding dried sludge into the sedimentation treatment process; (4) solid-liquid separation: carrying out solid-liquid separation on the mixed liquid in the sedimentation treatment process, and carrying out filter pressing and crushing treatment on the separated solid to obtain crushed sludge; (5) mixing two processes: conveying the crushed sludge to a mixing two process for mixing treatment with alkaline wastewater, and conveying the sludge obtained after sedimentation treatment to an incineration process for incineration; (6) iron-carbon process: delivering the filtered process fresh water to the iron-carbon process for treatment, and delivering the iron-carbon process to a mixing tank III for mixing treatment with the water discharged from the mixing tank II; (7) secondary sedimentation treatment: after the third mixing tank is subjected to sedimentation treatment, conveying the supernatant and domestic sewage to a biochemical process; the biochemical process comprises an anaerobic process, an aerobic process and an MBR process; the addition amount of the dried sludge is 20-40g/L; the anaerobic process, the aerobic process and the MBR process are all provided with surplus sludge discharge pipes, and the surplus sludge discharge pipes are conveyed to an anoxic fermentation tank for acidification treatment; the effluent of the anoxic fermentation tank is conveyed to the first mixing tank; the method also comprises a nanofiltration process, heavy metal wastewater is conveyed to the nanofiltration process for treatment, and concentrated water of the nanofiltration process is conveyed to the ultrafiltration process; and an ion exchange process is arranged between the nanofiltration process and the ultrafiltration process, and supernatant produced by the sedimentation treatment process is conveyed to the iron-carbon process for treatment.
2. The process for treating high-concentration organic industrial wastewater according to claim 1, wherein the addition of the acidic wastewater, the filtered concentrate and the effluent from the anoxic fermentation tank is determined by the pH in the first mixing tank, and the pH is adjusted to 3.5 to 4.5.
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| CN202310465180.XA CN116177824B (en) | 2023-04-27 | 2023-04-27 | High-concentration organic industrial wastewater treatment process |
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Citations (9)
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|---|---|---|---|---|
| JPH0494792A (en) * | 1990-08-10 | 1992-03-26 | Hitachi Ltd | Treatment of printed board producing waste liquid |
| EP0512660A1 (en) * | 1991-05-08 | 1992-11-11 | BC BERLIN-CONSULT GmbH | Method and apparatus for combined chemical-biological disposal of explosive-containing residues |
| CN101830596A (en) * | 2009-03-09 | 2010-09-15 | 深圳市金达莱环保股份有限公司 | Treatment method of circuit board industrial organic wastewater |
| CN103288280A (en) * | 2013-06-17 | 2013-09-11 | 南京三乐电子信息产业集团有限公司 | Method for processing circuit board and electroplating waste water through microwave, micro-electrolysis and oxidation technologies |
| CN103496828A (en) * | 2013-10-18 | 2014-01-08 | 红板（江西）有限公司 | Printed circuit board high-concentration organic wastewater and acidic wastewater treating process |
| CN203960004U (en) * | 2014-06-19 | 2014-11-26 | 珠海力合环境工程有限公司 | A kind of printing ink wastewater iron carbon treatment facility |
| CN106630467A (en) * | 2016-12-30 | 2017-05-10 | 四川师范大学 | Treatment method of printing and dyeing wastewater |
| CN210140521U (en) * | 2019-04-17 | 2020-03-13 | 深圳枫楚环保科技有限公司 | Printing industry effluent disposal system |
| CN111423065A (en) * | 2020-04-17 | 2020-07-17 | 安徽川鼎水处理设备有限公司 | Micro-electrolysis Fenton treatment process for printing wastewater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704594B (en) * | 2009-11-27 | 2011-11-16 | 波鹰(厦门)科技有限公司 | Device and method for purifying printing and dyeing advanced treatment wastewater |
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2023
- 2023-04-27 CN CN202310465180.XA patent/CN116177824B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0494792A (en) * | 1990-08-10 | 1992-03-26 | Hitachi Ltd | Treatment of printed board producing waste liquid |
| EP0512660A1 (en) * | 1991-05-08 | 1992-11-11 | BC BERLIN-CONSULT GmbH | Method and apparatus for combined chemical-biological disposal of explosive-containing residues |
| CN101830596A (en) * | 2009-03-09 | 2010-09-15 | 深圳市金达莱环保股份有限公司 | Treatment method of circuit board industrial organic wastewater |
| CN103288280A (en) * | 2013-06-17 | 2013-09-11 | 南京三乐电子信息产业集团有限公司 | Method for processing circuit board and electroplating waste water through microwave, micro-electrolysis and oxidation technologies |
| CN103496828A (en) * | 2013-10-18 | 2014-01-08 | 红板（江西）有限公司 | Printed circuit board high-concentration organic wastewater and acidic wastewater treating process |
| CN203960004U (en) * | 2014-06-19 | 2014-11-26 | 珠海力合环境工程有限公司 | A kind of printing ink wastewater iron carbon treatment facility |
| CN106630467A (en) * | 2016-12-30 | 2017-05-10 | 四川师范大学 | Treatment method of printing and dyeing wastewater |
| CN210140521U (en) * | 2019-04-17 | 2020-03-13 | 深圳枫楚环保科技有限公司 | Printing industry effluent disposal system |
| CN111423065A (en) * | 2020-04-17 | 2020-07-17 | 安徽川鼎水处理设备有限公司 | Micro-electrolysis Fenton treatment process for printing wastewater |
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