CN110615563A - Electroplating wastewater treatment method - Google Patents
Electroplating wastewater treatment method Download PDFInfo
- Publication number
- CN110615563A CN110615563A CN201910932378.8A CN201910932378A CN110615563A CN 110615563 A CN110615563 A CN 110615563A CN 201910932378 A CN201910932378 A CN 201910932378A CN 110615563 A CN110615563 A CN 110615563A
- Authority
- CN
- China
- Prior art keywords
- treatment
- electroplating wastewater
- wastewater
- treating
- fluidized bed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- 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
-
- 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
-
- 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
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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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
Abstract
The invention provides a method for treating electroplating wastewater. The electroplating wastewater treatment method is characterized in that: the method comprises the following steps: (1) adjusting the pH value of the electroplating wastewater to 6.5-7.5; (2) adding a flocculating agent for aeration treatment; (3) precipitating and filtering, performing filter pressing on sludge by using a filter press and then performing landfill treatment, and pumping filtrate into an electrolytic reaction tank by using a pump for electrolytic treatment; (4) and (4) discharging the wastewater after the electrolysis treatment after the adsorption of the fluidized bed. The invention can treat the electroplating wastewater more thoroughly, and can eliminate or reduce the pollution to the environment.
Description
The technical field is as follows:
the invention relates to a method for treating electroplating wastewater, belonging to the technical field of water treatment.
Background art:
the sources of the electroplating wastewater are generally: (1) cleaning water for the plated part; (2) a waste plating solution; (3) other waste waters including flushing the floor of the shop, scrubbing the polar plates, aeration equipment condensation, and various bath liquids and drains that "run, spill, drip, leak" due to bath leakage or improper operation and management; (4) the equipment cools the water, and the cooling water is not polluted except for temperature rise in the using process. The quality and quantity of the electroplating wastewater are related to the process conditions, production load, operation management, water using mode and other factors 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.
Currently, physical and chemical methods are generally adopted for treatment. The treatment method is more, effective and not few, but the treatment method can achieve the overall standard reaching not much.
The invention content is as follows:
the invention aims to provide a method for treating electroplating wastewater, which aims to solve the problems, thoroughly treat the electroplating wastewater and eliminate or reduce the pollution to the environment.
The above purpose is realized by the following technical scheme:
a method for treating electroplating wastewater comprises the following steps:
(1) adjusting the pH value of the electroplating wastewater to 6.5-7.5;
(2) adding a flocculating agent for aeration treatment;
(3) precipitating and filtering, performing filter pressing on sludge by using a filter press and then performing landfill treatment, and pumping filtrate into an electrolytic reaction tank by using a pump for electrolytic treatment;
(4) and (4) discharging the wastewater after the electrolysis treatment after the adsorption of the fluidized bed.
In the electroplating wastewater treatment method, concentrated sulfuric acid or sodium hydroxide is used for pH adjustment in the step (1).
The electroplating wastewater treatment method is characterized in that the aeration treatment time in the step (2) is 10-15 minutes.
In the electroplating wastewater treatment method, the flocculating agent in the step (2) is polyacrylamide.
In the electroplating wastewater treatment method, the medium for fluidized bed treatment in the step (4) is activated carbon.
Has the advantages that:
1. the invention can treat the electroplating wastewater more thoroughly, and can eliminate or reduce the pollution to the environment.
The specific implementation mode is as follows:
example 1:
a method for treating electroplating wastewater comprises the following steps:
(1) adjusting the pH value of the electroplating wastewater to 6.5-7.5;
(2) adding a flocculating agent for aeration treatment;
(3) precipitating and filtering, performing filter pressing on sludge by using a filter press and then performing landfill treatment, and pumping filtrate into an electrolytic reaction tank by using a pump for electrolytic treatment;
(4) and (4) discharging the wastewater after the electrolysis treatment after the adsorption of the fluidized bed.
In the electroplating wastewater treatment method in this embodiment, concentrated sulfuric acid or sodium hydroxide is used for pH adjustment in step (1).
In the method for treating electroplating wastewater in the embodiment, the aeration treatment time in the step (2) is 10 to 15 minutes.
In the electroplating wastewater treatment method in this embodiment, the flocculant in step (2) is polyacrylamide.
In the electroplating wastewater treatment method in this embodiment, the medium for fluidized bed treatment in step (4) is activated carbon.
The technical solutions disclosed in the present invention are not limited to the technical means disclosed in the above technical features, but also include technical solutions formed by equivalent substitutions of the above technical features. The present invention is not limited to the details given herein, but is within the ordinary knowledge of those skilled in the art.
Claims (5)
1. A method for treating electroplating wastewater is characterized by comprising the following steps: the method comprises the following steps:
(1) adjusting the pH value of the electroplating wastewater to 6.5-7.5;
(2) adding a flocculating agent for aeration treatment;
(3) precipitating and filtering, performing filter pressing on sludge by using a filter press and then performing landfill treatment, and pumping filtrate into an electrolytic reaction tank by using a pump for electrolytic treatment;
(4) and (4) discharging the wastewater after the electrolysis treatment after the adsorption of the fluidized bed.
2. A method for treating plating wastewater according to claim 1, comprising: in the step (1), concentrated sulfuric acid or sodium hydroxide is used for pH adjustment.
3. A method for treating plating wastewater according to claim 1, comprising: the time of the aeration treatment in the step (2) is 10-15 minutes.
4. A method for treating plating wastewater according to claim 1, comprising: and (3) adopting polyacrylamide as the flocculant in the step (2).
5. A method for treating plating wastewater according to claim 1, comprising: and (4) the medium for fluidized bed treatment is activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932378.8A CN110615563A (en) | 2019-09-29 | 2019-09-29 | Electroplating wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932378.8A CN110615563A (en) | 2019-09-29 | 2019-09-29 | Electroplating wastewater treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110615563A true CN110615563A (en) | 2019-12-27 |
Family
ID=68924946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910932378.8A Withdrawn CN110615563A (en) | 2019-09-29 | 2019-09-29 | Electroplating wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110615563A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277654A (en) * | 2021-05-28 | 2021-08-20 | 金川集团股份有限公司 | Method and device for treating electrodeposition high-purity manganese waste liquid by using electrochemical method |
-
2019
- 2019-09-29 CN CN201910932378.8A patent/CN110615563A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277654A (en) * | 2021-05-28 | 2021-08-20 | 金川集团股份有限公司 | Method and device for treating electrodeposition high-purity manganese waste liquid by using electrochemical method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191227 |