CN110981049A - Efficient catalytic degradation method for organic wastewater - Google Patents
Efficient catalytic degradation method for organic wastewater Download PDFInfo
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- CN110981049A CN110981049A CN201911313946.2A CN201911313946A CN110981049A CN 110981049 A CN110981049 A CN 110981049A CN 201911313946 A CN201911313946 A CN 201911313946A CN 110981049 A CN110981049 A CN 110981049A
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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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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Abstract
The invention belongs to the technical field of wastewater treatment, and particularly relates to a high-efficiency catalytic degradation method for organic wastewater, which comprises the following specific steps: s1, centrifugal filtration treatment: introducing organic wastewater to be treated into a centrifugal box, starting a driving motor of the centrifugal box, driving a stirring plate to rotate by the driving motor at the rotating speed of 8000-; s2, secondary filtering treatment: sequentially filtering the organic wastewater subjected to centrifugal filtration by 3-5 layers of activated carbon filter screens, and discharging the organic wastewater into a chemical reaction tank; s3, adding a hydrogen peroxide solution for degradation: introducing hydrogen peroxide solution with set concentration into the chemical reaction tank, standing, and reacting with the residual metal ions in the organic wastewater to generate metal oxide precipitate; the method has the advantages of less consumed reactant, lower cost and simple operation process in the catalytic degradation process.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a high-efficiency catalytic degradation method for organic wastewater.
Background
With the continuous development of human civilization, industrialization and urbanization have become the development reversal of each country, and a great negative effect brought by the industrialization is that a large amount of water is needed for production, and the large amount of water can become waste water after participating in the production, particularly, organic waste water discharged from industries such as paper making industry, leather processing industry and food has larger influence on the environment if being discharged randomly, and is easy to eutrophicate water quality, so that the organic waste water needs to be purified by adopting corresponding means such as catalytic degradation and then is discharged.
However, the existing method has the problems of excessive reactants consumed in the catalytic degradation process, high cost and complicated operation procedures.
Disclosure of Invention
The invention aims to provide an efficient catalytic degradation method for organic wastewater, and aims to solve the problems of excessive reactants consumed in the catalytic degradation process, high cost and complicated operation procedures in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high-efficiency catalytic degradation method for organic wastewater comprises the following specific steps:
s1, centrifugal filtration treatment: introducing organic wastewater to be treated into a centrifugal box, starting a driving motor of the centrifugal box, driving a stirring plate to rotate by the driving motor at the rotating speed of 8000-;
s2, secondary filtering treatment: sequentially filtering the organic wastewater subjected to centrifugal filtration by 3-5 layers of activated carbon filter screens, and discharging the organic wastewater into a chemical reaction tank;
s3, adding a hydrogen peroxide solution for degradation: introducing hydrogen peroxide solution with set concentration into the chemical reaction tank, standing, starting a xenon lamp above the chemical reaction tank for irradiation and catalysis for 5-8h, and reacting with the residual metal ions in the organic wastewater to generate metal oxide precipitate;
s4, filtering the precipitate: filtering the organic wastewater in the chemical reaction tank through an activated carbon filter screen used in S2, and then discharging the organic wastewater into a deaerator to ensure that no precipitate remains in the organic wastewater;
s5, deoxidizing treatment: and removing oxygen generated by the reaction in the water by the organic wastewater through a deaerator, and then discharging.
Preferably, the polypropylene filter cloth is a filter cloth which is organically woven by polypropylene fibers and has the breaking strength of 4.5-9 g/d.
Preferably, the activated carbon filter screen comprises the following raw materials: activated carbon, wood chips and quartz sand.
Preferably, the active carbon filter screen comprises the following raw materials in parts by mass: 50-70 parts of activated carbon, 20-30 parts of wood chips and 10-20 parts of quartz sand.
Preferably, the constant temperature in the chemical reaction tank is controlled at 15-20 ℃.
Preferably, the xenon lamp is a 500W xenon lamp with the wavelength of 320-380 nm.
Preferably, the hydrogen peroxide solution comprises the following raw materials: water and hydrogen peroxide.
Preferably, the hydrogen peroxide solution comprises the following raw materials in parts by mass: 99-99.9 parts of water and 0.1-1 part of hydrogen peroxide.
Preferably, a stirring device with the rotating speed of 30r/min is installed in the chemical reaction tank.
Compared with the prior art, the invention has the beneficial effects that:
1) only a small amount of hydrogen peroxide raw material is consumed in the whole treatment process, and other devices are reusable devices, so that the cost is relatively low;
2) the whole process mainly adopts a filtering mode and a secondary chemical reaction mode, so that the operation procedures are few, and the operation process is simpler;
3) the chemical reaction tank adopts a mode of light catalysis matched with the stirring of the stirring mechanism to ensure that the reaction is more sufficient.
Drawings
FIG. 1 is a flow chart of the catalytic degradation process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present invention provides a technical solution: a high-efficiency catalytic degradation method for organic wastewater comprises the following specific steps:
s1, centrifugal filtration treatment: the organic wastewater to be treated is introduced into the centrifugal box, a driving motor of the centrifugal box is started, the driving motor drives the stirring plate to rotate at the rotating speed of 8000-;
s2, secondary filtering treatment: the organic wastewater after centrifugal filtration is filtered by 3-5 layers of activated carbon filter screens in sequence and then discharged into a chemical reaction tank, and the activated carbon filter screens comprise the following raw materials: the activated carbon, the wood chips and the quartz sand, and the activated carbon filter screen comprises the following raw materials in percentage by mass: 50-70 parts of activated carbon, 20-30 parts of sawdust and 10-20 parts of quartz sand, wherein the activated carbon filter screen is formed by uniformly mixing the heated materials and then performing injection molding, so that residual impurities in the centrifugally filtered organic wastewater can be effectively filtered, and the amount of hydrogen peroxide solution required in degradation is reduced;
s3, adding a hydrogen peroxide solution for degradation: the constant temperature control in the chemical reaction tank is 15-20 ℃, is favorable for the reaction, and the hydrogen peroxide solution with set concentration is led into the chemical reaction tank for standing, and the hydrogen peroxide solution comprises the following raw materials: the hydrogen peroxide solution comprises the following raw materials in parts by mass: 99-99.9 parts of water and 0.1-1 part of hydrogen peroxide, and starting a xenon lamp above a chemical reaction tank for irradiation catalysis for 5-8 hours, wherein the xenon lamp is a 500W xenon lamp with the wavelength of 320-380 nm, a stirring device with the rotating speed of 30r/min is installed in the chemical reaction tank, the stirring device can effectively catalyze the reaction by matching with the irradiation of the xenon lamp, and the hydrogen peroxide solution reacts with the residual metal ions in the organic wastewater to generate metal oxide precipitates;
s4, filtering the precipitate: filtering the organic wastewater in the chemical reaction tank through an activated carbon filter screen used in S2, and then discharging the organic wastewater into a deaerator to ensure that no precipitate remains in the organic wastewater;
s5, deoxidizing treatment: the organic wastewater is discharged after oxygen generated by the reaction in the water is removed by a deaerator, the oxygen in the organic wastewater is removed, the eutrophication in the discharged organic wastewater is avoided, and the discharge standard is reached.
The first embodiment is as follows:
s1, centrifugal filtration treatment: the organic wastewater to be treated is introduced into a centrifugal box, a driving motor of the centrifugal box is started, the driving motor drives a stirring plate to rotate at the rotating speed of 10000r/min so as to centrifugally precipitate impurities in the organic wastewater, the centrifuged organic wastewater is discharged after being filtered by a polypropylene filter cloth, the polypropylene filter cloth is a filter cloth which is organically woven by polypropylene fibers and has the breaking strength of 4.5-9g/d, and the high-strength impact force generated by the passing of a large amount of organic wastewater can be borne, so that the organic wastewater is not broken, and the service life is long;
s2, secondary filtering treatment: the organic waste water after centrifugal filtration loops through 3 layers of active carbon filter screen and filters the back and discharges in the chemical reaction pond, and the active carbon filter screen constitutes raw and other materials and includes: the activated carbon, the wood chips and the quartz sand, and the activated carbon filter screen comprises the following raw materials in percentage by mass: 580g of active carbon, 280g of sawdust and 140g of quartz sand, wherein the active carbon filter screen is formed by uniformly mixing the heated materials and then performing injection molding, so that residual impurities in the centrifugally filtered organic wastewater can be effectively filtered, and the amount of hydrogen peroxide solution required in degradation is reduced;
s3, adding a hydrogen peroxide solution for degradation: thermostatic control is at 16 degrees centigrade in the chemical reaction pond, is favorable to going on of reaction, lets in the hydrogen peroxide solution of settlement concentration in the chemical reaction pond and stews, and the constitution raw materials of hydrogen peroxide solution include: the hydrogen peroxide solution comprises the following raw materials in parts by mass: 998g of water and 2g of hydrogen peroxide, starting a xenon lamp above a chemical reaction tank for irradiation and catalysis for 5 hours, wherein the xenon lamp is a 500W xenon lamp with the wavelength of 320-380 nm, a stirring device with the rotating speed of 30r/min is installed in the chemical reaction tank, the stirring device is matched with the xenon lamp for irradiation to effectively catalyze the reaction, and the hydrogen peroxide solution reacts with the residual metal ions in the organic wastewater to generate metal oxide precipitates;
s4, filtering the precipitate: filtering the organic wastewater in the chemical reaction tank through an activated carbon filter screen used in S2, and then discharging the organic wastewater into a deaerator to ensure that no precipitate remains in the organic wastewater;
s5, deoxidizing treatment: the organic wastewater is discharged after oxygen generated by the reaction in the water is removed by a deaerator, the oxygen in the organic wastewater is removed, the eutrophication in the discharged organic wastewater is avoided, and the discharge standard is reached.
Example two:
s1, centrifugal filtration treatment: the organic wastewater to be treated is introduced into a centrifugal box, a driving motor of the centrifugal box is started, the driving motor drives a stirring plate to rotate at the rotating speed of 18000r/min so as to centrifugally precipitate impurities in the organic wastewater, the centrifuged organic wastewater is discharged after being filtered by polypropylene filter cloth, the polypropylene filter cloth is filter cloth which is organically woven by polypropylene fibers and has the breaking strength of 4.5-9g/d, and the high-strength impact force generated by the passing of a large amount of organic wastewater can be borne, so that the organic wastewater is not broken, and the service life is long;
s2, secondary filtering treatment: the organic waste water after centrifugal filtration loops through 4 layers of active carbon filter screen and filters the back and discharges in the chemical reaction pond, and the active carbon filter screen constitutes raw and other materials and includes: the activated carbon, the wood chips and the quartz sand, and the activated carbon filter screen comprises the following raw materials in percentage by mass: the activated carbon filter screen is formed by uniformly mixing the heated materials and then performing injection molding, so that residual impurities in the centrifugally filtered organic wastewater can be effectively filtered, and the amount of hydrogen peroxide solution required in degradation is reduced;
s3, adding a hydrogen peroxide solution for degradation: thermostatic control is at 18 degrees centigrade in the chemical reaction pond, is favorable to going on of reaction, lets in the hydrogen peroxide solution of settlement concentration in the chemical reaction pond and stews, and the constitution raw materials of hydrogen peroxide solution include: the hydrogen peroxide solution comprises the following raw materials in parts by mass: 995g of water and 5g of hydrogen peroxide, starting a xenon lamp above a chemical reaction tank for irradiation catalysis for 7 hours, wherein the xenon lamp is a 500W xenon lamp with the wavelength of 320-380 nm, a stirring device with the rotating speed of 30r/min is installed in the chemical reaction tank, the stirring device can effectively catalyze the reaction by matching with the irradiation of the xenon lamp, and the hydrogen peroxide solution reacts with the residual metal ions in the organic wastewater to generate metal oxide precipitates;
s4, filtering the precipitate: filtering the organic wastewater in the chemical reaction tank through an activated carbon filter screen used in S2, and then discharging the organic wastewater into a deaerator to ensure that no precipitate remains in the organic wastewater;
s5, deoxidizing treatment: the organic wastewater is discharged after oxygen generated by the reaction in the water is removed by a deaerator, the oxygen in the organic wastewater is removed, the eutrophication in the discharged organic wastewater is avoided, and the discharge standard is reached.
Example three:
s1, centrifugal filtration treatment: the organic wastewater to be treated is introduced into a centrifugal box, a driving motor of the centrifugal box is started, the driving motor drives a stirring plate to rotate at the rotating speed of 28000r/min so as to centrifugally precipitate impurities in the organic wastewater, the centrifuged organic wastewater is discharged after being filtered by polypropylene filter cloth, the polypropylene filter cloth is filter cloth which is organically woven by polypropylene fibers and has the breaking strength of 4.5-9g/d, and the high-strength impact force generated by the passing of a large amount of organic wastewater can be borne, so that the high-strength impact force is not broken, and the service life is long;
s2, secondary filtering treatment: the organic waste water after centrifugal filtration loops through 5 layers of active carbon filter screen and filters the back and discharges in the chemical reaction pond, and the active carbon filter screen constitutes raw and other materials and includes: the activated carbon, the wood chips and the quartz sand, and the activated carbon filter screen comprises the following raw materials in percentage by mass: 680g of active carbon, 220g of sawdust and 100g of quartz sand, wherein the active carbon filter screen is formed by uniformly mixing the heated materials and then performing injection molding, so that residual impurities in the centrifugally filtered organic wastewater can be effectively filtered, and the amount of hydrogen peroxide solution required in degradation is reduced;
s3, adding a hydrogen peroxide solution for degradation: thermostatic control is at 20 degrees centigrade in the chemical reaction pond, is favorable to going on of reaction, lets in the hydrogen peroxide solution of settlement concentration in the chemical reaction pond and stews, and the constitution raw materials of hydrogen peroxide solution include: the hydrogen peroxide solution comprises the following raw materials in parts by mass: 992g of water and 8g of hydrogen peroxide, starting a xenon lamp above a chemical reaction tank for irradiation and catalysis for 8 hours, wherein the xenon lamp is a 500W xenon lamp with the wavelength of 320-380 nm, a stirring device with the rotating speed of 30r/min is installed in the chemical reaction tank, the stirring device is matched with the xenon lamp for irradiation to effectively catalyze the reaction, and the hydrogen peroxide solution reacts with the residual metal ions in the organic wastewater to generate metal oxide precipitates;
s4, filtering the precipitate: filtering the organic wastewater in the chemical reaction tank through an activated carbon filter screen used in S2, and then discharging the organic wastewater into a deaerator to ensure that no precipitate remains in the organic wastewater;
s5, deoxidizing treatment: the organic wastewater is discharged after oxygen generated by the reaction in the water is removed by a deaerator, the oxygen in the organic wastewater is removed, the eutrophication in the discharged organic wastewater is avoided, and the discharge standard is reached.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A high-efficiency catalytic degradation method for organic wastewater is characterized by comprising the following steps: the catalytic degradation method comprises the following specific steps:
s1, centrifugal filtration treatment: introducing organic wastewater to be treated into a centrifugal box, starting a driving motor of the centrifugal box, driving a stirring plate to rotate by the driving motor at the rotating speed of 8000-;
s2, secondary filtering treatment: sequentially filtering the organic wastewater subjected to centrifugal filtration by 3-5 layers of activated carbon filter screens, and discharging the organic wastewater into a chemical reaction tank;
s3, adding a hydrogen peroxide solution for degradation: introducing hydrogen peroxide solution with set concentration into the chemical reaction tank, standing, starting a xenon lamp above the chemical reaction tank for irradiation and catalysis for 5-8h, and reacting with the residual metal ions in the organic wastewater to generate metal oxide precipitate;
s4, filtering the precipitate: filtering the organic wastewater in the chemical reaction tank through an activated carbon filter screen used in S2, and then discharging the organic wastewater into a deaerator to ensure that no precipitate remains in the organic wastewater;
s5, deoxidizing treatment: and removing oxygen generated by the reaction in the water by the organic wastewater through a deaerator, and then discharging.
2. The method for the catalytic degradation of organic wastewater according to claim 1, wherein: the polypropylene filter cloth is made of polypropylene fibers with breaking strength of 4.5-9 g/d.
3. The method for the catalytic degradation of organic wastewater according to claim 1, wherein: the active carbon filter screen comprises the following raw materials: activated carbon, wood chips and quartz sand.
4. The method for the catalytic degradation of organic wastewater with high efficiency as claimed in claim 3, wherein: the active carbon filter screen comprises the following raw materials in parts by mass: 50-70 parts of activated carbon, 20-30 parts of wood chips and 10-20 parts of quartz sand.
5. The method for the catalytic degradation of organic wastewater according to claim 1, wherein: the constant temperature in the chemical reaction tank is controlled at 15-20 ℃.
6. The method for the catalytic degradation of organic wastewater according to claim 1, wherein: the xenon lamp is a 500W xenon lamp with the wavelength of 320-380 nm.
7. The method for the catalytic degradation of organic wastewater according to claim 1, wherein: the hydrogen peroxide solution comprises the following raw materials: water and hydrogen peroxide.
8. The method for efficiently catalyzing the degradation of organic wastewater according to claim 7, wherein: the hydrogen peroxide solution comprises the following raw materials in parts by mass: 99-99.9 parts of water and 0.1-1 part of hydrogen peroxide.
9. The method for the catalytic degradation of organic wastewater according to claim 1, wherein: and a stirring device with the rotating speed of 30r/min is arranged in the chemical reaction tank.
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| CN114870906A (en) * | 2021-02-05 | 2022-08-09 | 陕西青朗万城环保科技有限公司 | Method and device for generating catalyst |
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| CN109133501A (en) * | 2018-08-22 | 2019-01-04 | 青海省地质矿产测试应用中心 | Comprehensive treatment method for nonferrous metal ore wastewater |
| CN110526484A (en) * | 2019-10-11 | 2019-12-03 | 南京大学 | A kind of organophosphorus pesticide technique for treating industrial wastewater |
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| CN102515392A (en) * | 2011-12-16 | 2012-06-27 | 三门峡天一实业有限公司 | Method for processing electroplating wastewater |
| CN109133501A (en) * | 2018-08-22 | 2019-01-04 | 青海省地质矿产测试应用中心 | Comprehensive treatment method for nonferrous metal ore wastewater |
| CN110526484A (en) * | 2019-10-11 | 2019-12-03 | 南京大学 | A kind of organophosphorus pesticide technique for treating industrial wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114870906A (en) * | 2021-02-05 | 2022-08-09 | 陕西青朗万城环保科技有限公司 | Method and device for generating catalyst |
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