CN112794502B - Electroplating sewage treatment system - Google Patents
Electroplating sewage treatment system Download PDFInfo
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- CN112794502B CN112794502B CN202011602619.1A CN202011602619A CN112794502B CN 112794502 B CN112794502 B CN 112794502B CN 202011602619 A CN202011602619 A CN 202011602619A CN 112794502 B CN112794502 B CN 112794502B
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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
- 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
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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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- 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
Abstract
The invention discloses an electroplating sewage treatment system, which comprises a sedimentation tank, a flocculation sedimentation tank, a primary adsorption tank, a secondary adsorption tank, a filter press, an extrusion molding machine, a liquid nitrogen instant freezer, a vacuum drier and a smelting furnace, wherein the sedimentation tank is arranged in the front of the flocculation sedimentation tank; the sedimentation tank, the flocculation sedimentation tank, the primary adsorption tank and the secondary adsorption tank are communicated in sequence; the bottoms of the sedimentation tank and the flocculation sedimentation tank are provided with sewage outlets, the top of the flocculation sedimentation tank is provided with a froth scraper, and the bottom of the secondary adsorption tank is provided with a discharge outlet; the porous block-shaped body is arranged in the primary adsorption tank, and the active carbon layer is filled in the secondary adsorption tank. The system is subjected to precipitation, flocculation, primary adsorption and secondary adsorption, the treated wastewater meets the discharge requirement of the discharge Standard of electroplating pollutants (GB 21900-2008), the waste residues are metal melts and slag, the slag can be mixed in cement products for recycling, and the metal melts can be recycled.
Description
Technical Field
The invention belongs to the technical field of waste environment-friendly treatment, and particularly relates to an electroplating sewage treatment system.
Background
The sources of the electroplating wastewater are generally: (1) workpiece cleaning water; (2) a waste plating solution; (3) Other waste waters, including flushing the floor of the plant, scrubbing the pole plate wash water, aeration equipment condensate water, and various bath solutions and drains that "run, pop, drip, leak" due to bath leakage or improper operation management; (4) The equipment cools the water, and the cooling water is not polluted except for temperature rise in the using process. The water quality and the water quantity of the electroplating wastewater are related to factors such as the process condition, the production load, the operation management and the water using mode of electroplating production. The electroplating wastewater has complex water quality and difficult control of components, contains heavy metal ions such as chromium, cadmium, nickel, copper, zinc, gold, silver and the like, cyanide and the like, and some of the heavy metal ions belong to highly toxic substances with carcinogenic, teratogenic and mutagenic properties.
The prior treatment method of electroplating wastewater is roughly as follows: air floatation, flocculation, electro-reduction, etc.
For large-scale electroplating wastewater treatment, wastewater and waste residues exist, and a flocculation method is generally adopted for treatment.
The flocculation treatment still has the problem that waste residue needs to be buried, and the treatment cost is higher.
The technical problem solved by the scheme is as follows: how to reduce the treatment cost and improve the recovery rate.
Disclosure of Invention
The invention mainly aims to provide an electroplating sewage treatment system, which is characterized in that after precipitation, flocculation, primary adsorption and secondary adsorption, the treated wastewater meets the discharge requirement of the discharge Standard of electroplating pollutants (GB 21900-2008), waste residues are metal melts and slag, the slag can be mixed in cement products for recycling, and the metal melts can be recycled.
According to a first aspect of the invention, an electroplating sewage treatment system is provided, which comprises a sedimentation tank, a flocculation sedimentation tank, a primary adsorption tank, a secondary adsorption tank, a filter press, an extrusion molding machine, a liquid nitrogen instant freezer, a vacuum dryer and a smelting furnace;
the sedimentation tank, the flocculation sedimentation tank, the primary adsorption tank and the secondary adsorption tank are communicated in sequence;
the bottoms of the sedimentation tank and the flocculation sedimentation tank are provided with sewage outlets, the top of the flocculation sedimentation tank is provided with a froth scraper, and the bottom of the secondary adsorption tank is provided with a discharge outlet;
a porous blocky body is arranged in the primary adsorption tank, and an activated carbon layer is filled in the secondary adsorption tank;
the filter press is used for carrying out filter pressing on sludge discharged from the sewage outlets of the sedimentation tank and the flocculation sedimentation tank and foam collected by the foam floating scraper to obtain electroplating sludge with the water content of 25-30%;
the extrusion molding machine is used for preparing electroplating sludge, activated carbon and inorganic adhesive into a block;
the liquid nitrogen instant freezer is used for reducing the central temperature of the massive body to be below-60 ℃;
the vacuum drier is used for partially gasifying the moisture in the blocky body treated by the liquid nitrogen instant freezer under the condition of heating to obtain a porous blocky body;
the smelting furnace is used for smelting the porous block-shaped body which is saturated in the first-stage adsorption tank to obtain metal melt and furnace slag.
In foretell electroplating sewage treatment system, the top of sedimentation tank is equipped with the one-level overflow mouth, one-level overflow mouth and flocculation sedimentation tank switch on.
In foretell electroplating sewage treatment system, still be equipped with the filtering ponds between one-level adsorption tank and the flocculation and sedimentation basin, the middle part of flocculation and sedimentation basin switches on with the upper portion of filtering ponds, be equipped with the filter screen in the filtering ponds, the bottom of filtering ponds switches on with the bottom of one-level adsorption tank.
In foretell electroplating sewage treatment system, the top in one-level adsorption tank is equipped with the second grade overflow mouth, the top of second grade overflow mouth and second grade adsorption tank switches on.
In the electroplating sewage treatment system, the retention time of the sewage in the flocculation sedimentation tank is 50-70s.
In the electroplating sewage treatment system, the system further comprises a mixer, wherein the mixer is used for mixing the electroplating sludge, the activated carbon and the inorganic adhesive for extrusion molding of the machine block.
In the electroplating sewage treatment system, the system further comprises a ball mill, wherein the ball mill is used for ball-milling broken blocks obtained by crushing porous blocky bodies which are saturated in the primary adsorption tank, and supplying the broken blocks to a smelting furnace for smelting.
One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:
the invention adopts a sedimentation tank, a flocculation sedimentation tank, a primary adsorption tank, a secondary adsorption tank, a pressure filter, an extrusion forming machine, a liquid nitrogen instant freezer, a vacuum drier and a smelting furnace for combination, realizes the standard discharge of sewage through the sedimentation tank, the flocculation sedimentation tank, the primary adsorption tank and the secondary adsorption tank, and realizes the reutilization of solid waste and the recovery of metal melt through the pressure filter, the extrusion forming machine, the liquid nitrogen instant freezer, the vacuum drier and the smelting furnace.
The system can realize standard discharge of solid and liquid wastes.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Example 1
Referring to fig. 1, an electroplating sewage treatment system comprises a sedimentation tank 1, a flocculation sedimentation tank 2, a primary adsorption tank 3, a secondary adsorption tank 4, a filter press 5, an extrusion molding machine 6, a liquid nitrogen instant freezer 7, a vacuum dryer 8 and a smelting furnace 9;
the sedimentation tank 1, the flocculation sedimentation tank 2, the primary adsorption tank 3 and the secondary adsorption tank 4 are communicated in sequence;
the bottom of the sedimentation tank 1 and the bottom of the flocculation sedimentation tank 2 are provided with sewage outlets 10, the top of the flocculation sedimentation tank 2 is provided with a froth scraper 11, and the bottom of the secondary adsorption tank 4 is provided with a discharge outlet 12;
a porous block-shaped body 13 is arranged in the primary adsorption tank 3, and an activated carbon layer 14 is filled in the secondary adsorption tank 4;
the filter press 5 is used for carrying out filter pressing on sludge discharged from the sewage outlets 10 of the sedimentation tank 1 and the flocculation sedimentation tank 2 and foam collected by the foam floating scraper 11 to obtain electroplating sludge with the water content of 25-30%;
the extrusion molding machine 6 is used for preparing electroplating sludge, activated carbon and inorganic adhesive into a block;
the liquid nitrogen instant freezer 7 is used for reducing the central temperature of the massive body to be below minus 60 ℃;
the vacuum drier 8 is used for partially gasifying the moisture in the blocky body treated by the liquid nitrogen instant freezer 7 under the condition of heating to obtain a porous blocky body 13;
the smelting furnace 9 is used for smelting the porous blocky body 13 with saturated adsorption in the primary adsorption tank 3 to obtain metal melt and slag.
The specific treatment process comprises the following steps:
step 1: adding electroplating sewage into a sedimentation tank 1 for sedimentation, and separating out a first sediment;
step 2: introducing the liquid obtained in the step 1 into a flocculation sedimentation tank 2, adding a flocculating agent, stirring, and collecting flocs on the surface and a second precipitate at the bottom;
the flocculant is an organic flocculant, preferably a cationic polyacrylamide flocculant;
anionic polyacrylamides are water-soluble high molecular weight polymers. Because of the polar groups in the molecular chain, the polymer can absorb solid particles suspended in water, bridge the particles or coagulate the particles to form large flocculate through charge neutralization. Therefore, it can accelerate the sedimentation of particles in suspension, and has very obvious effects of accelerating the clarification of solution, promoting filtration and the like.
The amount of flocculant added per cubic meter of wastewater (neutral or weakly alkaline) is preferably 5-15g.
And step 3: introducing the liquid in the step (2) into a first-stage adsorption tank (3); the porous block-shaped body 13 is filled in the primary adsorption tank 3; the porous blocky body 13 is smelted after being saturated in adsorption, so that a melt and slag are obtained; the slag is used as an inorganic binder after grinding.
And 4, step 4: introducing the liquid treated in the step (3) into a secondary adsorption tank (4); and the secondary adsorption tank 4 is filled with an activated carbon layer 14.
And 5: mixing the first precipitate obtained in the step 1, the flocculate obtained in the step 2 and the second precipitate to prepare electroplating sludge;
the mixture is prepared by a mixer 19, and then the electroplating sludge, the activated carbon and the inorganic adhesive are made into a block-shaped body by an extrusion molding machine, wherein the block-shaped body is in a cuboid or round cake shape.
The preparation method of the porous block-shaped body 13 comprises the following steps:
step 51: controlling the water content of the electroplating sludge to be 25-30% in an extrusion mode;
step 52: mixing and extruding the electroplating sludge, the activated carbon and the inorganic adhesive in the step 51 into blocks; after the block sludge is extruded into blocks, the block sludge is cured for 5 to 10 hours at normal temperature; the weight ratio of the electroplating sludge, the activated carbon and the inorganic binder is 50-60.
Step 53: quickly freezing the blocky sludge in the step 52 by using a liquid nitrogen quick freezer 7; the central temperature of the massive sludge subjected to liquid nitrogen quick-freezing treatment is-80 ℃;
step 54: the moisture in the quick-frozen massive sludge is gasified in a vacuum environment by a vacuum drier 8 or a vacuum freeze dryer to obtain a porous massive body. The vacuum environment refers to the absolute pressure of 20Pa, and the processing time of the step 5 is 5h. The freeze-drying is assisted with heating to accelerate gasification, and the heating temperature can be controlled between 50 ℃ and 100 ℃.
The smelting process of smelting the porous block-shaped body 13 after adsorption saturation is as follows: ball-milling and crushing the porous block 13 after saturated adsorption to obtain granules with the particle size of 100-200 meshes; and then, smelting the granular material and a little of borax as a solvent in an environment of 1300 +/-100 ℃, wherein the adding amount of the borax is 0.05-0.1% of the weight of the block-shaped body in the step 54, and obtaining a melt and slag. The powder of slag ground to 200 mesh or finer can be recycled as an inorganic binder.
As the preferred of this embodiment, the top of sedimentation tank 1 is equipped with one-level overflow mouth 15, one-level overflow mouth 15 switches on with flocculation and sedimentation tank 2, still be equipped with filtering ponds 16 between one-level adsorption tank 3 and the flocculation and sedimentation tank 2, the middle part of flocculation and sedimentation tank 2 switches on with the upper portion of filtering ponds 16, be equipped with filter screen 18 in the filtering ponds 16, the bottom of filtering ponds 16 switches on with the bottom of one-level adsorption tank 3, the top of one-level adsorption tank 3 is equipped with second grade overflow mouth 17, second grade overflow mouth 17 switches on with the top of second grade adsorption tank 4, the sewage dwell time in the flocculation and sedimentation tank 2 is 50-70s.
The beneficial effects of the invention are as follows:
the invention adopts the combination of a sedimentation tank, a flocculation sedimentation tank, a primary adsorption tank, a secondary adsorption tank, a pressure filter, an extrusion molding machine, a liquid nitrogen quick freezing machine, a vacuum drier and a smelting furnace, realizes the standard-reaching discharge of sewage through the sedimentation tank, the flocculation sedimentation tank, the primary adsorption tank and the secondary adsorption tank, and realizes the reutilization of solid wastes and the recovery of metal melt through the pressure filter, the extrusion molding machine, the liquid nitrogen quick freezing machine, the vacuum drier and the smelting furnace.
The system can realize standard discharge of solid and liquid wastes
Through the system, the first precipitate, the second precipitate and the flocculate in the electroplating wastewater are treated as electroplating sludge, solid hazardous waste discharge is avoided, the electroplating wastewater is flocculated, primary adsorption and secondary adsorption, the discharge requirement of 'electroplating pollutant discharge standard' (GB 21900-2008) is met, excessive liquid hazardous waste discharge is avoided, the electroplating sludge after primary dehydration, activated carbon and an adhesive are mixed, the activated carbon still has high activity, heavy metal ions and organic matters in the wastewater can be adsorbed, the effect of primary adsorption filtration is achieved, the activated carbon and the adhesive can be used as a reducing agent and a slag forming agent in the smelting process, additional supplement is not needed, compared with sand layer filtration in the traditional sewage treatment, the filtering and adsorption effect is better, the adsorption pressure of subsequent activated carbon is reduced, and the adsorption life of the activated carbon is prolonged.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (1)
1. An electroplating sewage treatment system is characterized by comprising a sedimentation tank, a flocculation sedimentation tank, a primary adsorption tank, a secondary adsorption tank, a filter press, an extrusion molding machine, a liquid nitrogen instant freezer, a vacuum drier and a smelting furnace;
the sedimentation tank, the flocculation sedimentation tank, the primary adsorption tank and the secondary adsorption tank are communicated in sequence;
the bottoms of the sedimentation tank and the flocculation sedimentation tank are provided with sewage outlets, the top of the flocculation sedimentation tank is provided with a froth scraper, and the bottom of the secondary adsorption tank is provided with a discharge outlet;
a porous blocky body is arranged in the primary adsorption tank, and an activated carbon layer is filled in the secondary adsorption tank;
the filter press is used for carrying out filter pressing on sludge discharged from the sewage discharge outlets of the sedimentation tank and the flocculation sedimentation tank and foam collected by the floating foam scraper plate to obtain electroplating sludge with the water content of 25-30%;
the extrusion molding machine is used for preparing the electroplating sludge, the active carbon and the inorganic adhesive into a block-shaped body;
the liquid nitrogen instant freezer is used for reducing the central temperature of the massive body to be below-60 ℃;
the vacuum drier is used for partially gasifying the moisture in the blocky body treated by the liquid nitrogen instant freezer under the condition of heating to obtain a porous blocky body;
the smelting furnace is used for smelting the porous block-shaped body which is saturated in the first-stage adsorption tank to obtain metal melt and furnace slag;
grinding the slag into powder of 200 meshes or finer for recycling as the inorganic binder;
the top of the sedimentation tank is provided with a primary overflow port, and the primary overflow port and the flocculation sedimentation Chi Daotong;
a filter tank is also arranged between the primary adsorption tank and the flocculation sedimentation tank, the middle part of the flocculation sedimentation tank is communicated with the upper part of the filter tank, a filter screen is arranged in the filter tank, and the bottom of the filter tank is communicated with the bottom of the primary adsorption tank;
the top of the first-stage adsorption tank is provided with a second-stage overflow port which is communicated with the top of the second-stage adsorption tank, the retention time of the sewage in the flocculation sedimentation tank is 50-70s;
the device also comprises a mixer, wherein the mixer is used for mixing the electroplating sludge, the activated carbon and the inorganic adhesive for an extrusion molding machine to make blocks;
the device also comprises a ball mill, wherein the ball mill is used for ball milling fragments obtained by crushing the porous blocky bodies which are saturated in the primary adsorption tank, and supplying the fragments to a smelting furnace for smelting.
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| CN202011602619.1A CN112794502B (en) | 2020-12-29 | 2020-12-29 | Electroplating sewage treatment system |
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| CN202011602619.1A CN112794502B (en) | 2020-12-29 | 2020-12-29 | Electroplating sewage treatment system |
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| CN112794502B true CN112794502B (en) | 2023-04-07 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU94028195A (en) * | 1994-07-27 | 1996-05-20 | Уральский научно-исследовательский институт региональных экологических проблем | Process for purifying sewage of heavy metal ions |
| CN102758090A (en) * | 2012-06-29 | 2012-10-31 | 中国瑞林工程技术有限公司 | Treatment method for electroplating sludge |
| CN213950662U (en) * | 2020-12-16 | 2021-08-13 | 生态环境部华南环境科学研究所 | Emergency treatment equipment for multistage-hole sludge carbon-based electroplating wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102642991B (en) * | 2012-04-28 | 2013-12-04 | 南京大学 | Efficient combination advanced treatment method for electroplating wastewater |
| CN105502753B (en) * | 2016-02-19 | 2018-02-09 | 厦门科霖达环保科技有限公司 | A kind of handling process of electroplating comprehensive waste water |
| CN107034357A (en) * | 2017-04-10 | 2017-08-11 | 郭聪 | A kind of processing method of electroplating sludge comprehensive utilization of resources |
| CN107840544B (en) * | 2017-11-30 | 2020-04-24 | 重庆精创联合环保工程有限公司 | Electroplating wastewater treatment method |
| CN207849396U (en) * | 2018-01-08 | 2018-09-11 | 修武永乐新能源环保设备有限公司 | A kind of electroplating sludge processing system |
| CN207845364U (en) * | 2018-01-24 | 2018-09-11 | 湖南鼎诚合力环保科技发展有限公司 | Electroplating wastewater integrative processing system |
| CN108623041B (en) * | 2018-05-18 | 2021-10-29 | 沈阳建筑大学 | Movable water treatment system for drilling wastewater |
| CN109772259A (en) * | 2019-03-18 | 2019-05-21 | 清华大学 | Utilize the method and adsorbent for heavy metal of electroplating sludge processing electroplating wastewater |
| CN110655235A (en) * | 2019-10-31 | 2020-01-07 | 西峡龙成特种材料有限公司 | Electroplating wastewater treatment equipment and wastewater treatment method |
| CN211664859U (en) * | 2019-12-30 | 2020-10-13 | 深圳市全弘自动化设备有限公司 | Wastewater treatment device of full-automatic electroplating equipment |
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2020
- 2020-12-29 CN CN202011602619.1A patent/CN112794502B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU94028195A (en) * | 1994-07-27 | 1996-05-20 | Уральский научно-исследовательский институт региональных экологических проблем | Process for purifying sewage of heavy metal ions |
| CN102758090A (en) * | 2012-06-29 | 2012-10-31 | 中国瑞林工程技术有限公司 | Treatment method for electroplating sludge |
| CN213950662U (en) * | 2020-12-16 | 2021-08-13 | 生态环境部华南环境科学研究所 | Emergency treatment equipment for multistage-hole sludge carbon-based electroplating wastewater |
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