CN101549917A - Method for recovering cupric salts in electroplating acid copper waste water - Google Patents
Method for recovering cupric salts in electroplating acid copper waste water Download PDFInfo
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- CN101549917A CN101549917A CNA2008100602265A CN200810060226A CN101549917A CN 101549917 A CN101549917 A CN 101549917A CN A2008100602265 A CNA2008100602265 A CN A2008100602265A CN 200810060226 A CN200810060226 A CN 200810060226A CN 101549917 A CN101549917 A CN 101549917A
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- waste water
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- copper
- cupric salts
- acid copper
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Abstract
The invention belongs to the technical field of industrial waste water treatment, in particular to a method for recovering cupric salts in electroplating acid copper waste water. Aiming at overcoming the defects of high cost, inability of directly reusing recovered cupric salts to an electroplating copper tank, generation of secondary waste water, and the like of the prior method for recovering copper in the electroplating copper waste water by adopting an iron exchange method, the invention provides the method for recovering the cupric salts in the electroplating acid copper waste water, which has the advantages that the recovered cupric salts can be directly reused for the electroplating copper tank, the cost is low, the pollution is eliminated and better economic benefit is obtained. The method comprises the following steps that: (1) alkali is added and stirred to sulphate acidic copper-electroplating waste water; (2) the copper-electroplating waste water treated by alkali flows into a precipitator for precipitation; through the precipitation, the copper-electroplating waste water containing the precipitate which is cupric salts is input into a press filter for carrying out cupric salt press filter, and the obtained precipitate which is cupric salts is washed for a plurality of times with clear water and then dissolved to be saturated with 4 percent of sulphuric acid so as to be reused for the electroplating copper tank; and (3) supernatant fluid flows into a neutralization pond for neutralization.
Description
Technical field
The invention belongs to the technical field of Industrial Wastewater Treatment, method for recovering cupric salts in particularly a kind of electroplating acid copper waste water.
Background technology
Up to now, almost all be to be treated as electroplating sludge together to the electro-coppering wastewater treatment as electroplating integrated waste water, its copper that contains goes out of use.Also there is the people in to the electro-coppering wastewater treatment, to adopt ion exchange method to reclaim copper now, but the mantoquita that this method exists once, and investment is big, complicated operation, cost recovery are higher, reclaim can not direct reuse in the electro-coppering groove, the weak point of secondary wastewater generation etc. is arranged, so this method fails to obtain popularization in to the electro-coppering wastewater treatment.
Summary of the invention
The present invention is directed to existing to electro-coppering waste water adopt that ion exchange method reclaims that the existing once investment of copper is big, complicated operation, cost recovery are higher, the mantoquita that reclaims can not direct reuse in the electro-coppering groove, the weak point of secondary wastewater generation etc. is arranged, method for recovering cupric salts in a kind of electroplating acid copper waste water is provided.But the mantoquita direct reuse that method for recovering cupric salts reclaimed in this electroplating acid copper waste water is with low cost in the electro-coppering groove, has both eliminated the pollution of copper, obtains favorable economic benefit again.
The technical solution used in the present invention is finished in the following way: method for recovering cupric salts in a kind of electroplating acid copper waste water, and it may further comprise the steps:
(1) in vitriol acid copper-plating waste water, adds alkali under the stirring, make the wastewater oxidation reduction potential reach 850-900;
(2) copper plating wastewater after adding alkaline purification flows into the settling vessel precipitation, through precipitation, contain in the copper plating wastewater input pressure filter of throw out mantoquita and carry out the mantoquita press filtration, resulting throw out mantoquita repeatedly washs with clear water, again with 4% sulfuric acid dissolution to saturated, can direct reuse in the electro-coppering groove;
(3) supernatant liquor flows into the neutralization tank neutralization.
In above-mentioned electroplating acid copper waste water in the method for recovering cupric salts, the instrument that is used for detecting the redox potential in the vitriol acid copper-plating waste water is to adopt oxidation-reduction potentiometer, and this oxidation-reduction potentiometer can be used to indicate current potential and the dosing dosage in the waste water.
Method for recovering cupric salts is compared with method for recovering cupric salts in the existing plating acid copper waste water in the electroplating acid copper waste water of the present invention, has following characteristics:
1, cost is low, can be with the mantoquita direct reuse that reclaims in the electro-coppering groove;
2, processing ease has only single step reaction;
3, floor space is little, less investment, and equipment is simple, and instant effect has good economic benefits.
Description of drawings
Fig. 1 is the process flow sheet of method for recovering cupric salts in the electroplating acid copper waste water of the present invention.
Embodiment
Contrast accompanying drawing below, the invention will be further described by embodiment.
With reference to accompanying drawing 1, method for recovering cupric salts in a kind of electroplating acid copper waste water, it may further comprise the steps:
(1) vitriol acid copper-plating waste water adds alkali by in liquid-inlet pipe 1 injecting reactor 4 under stirring in vitriol acid copper-plating waste water, makes the wastewater oxidation reduction potential reach 850-900;
(2) copper plating wastewater after adding alkaline purification flows into settling vessel 5 precipitations by the opening of reactor 4 middle and lower parts, through precipitation, the copper plating wastewater that contains the throw out mantoquita is by carrying out the mantoquita press filtration in the pipeline 7 input pressure filters 8, resulting throw out mantoquita repeatedly washs with clear water, again with 4% sulfuric acid dissolution to saturated, can be by drain pipe 11 with its direct reuse in the electro-coppering groove;
(3) supernatant liquor in the settling vessel 5 neutralizes by drain pipe 6 inflow neutralization tanks.
After testing, the supernatant liquor copper content in the settling vessel 5 is＜0.5mg/l.
In above-mentioned electroplating acid copper waste water, in the method for recovering cupric salts, in reactor 4, be provided with the oxidation-reduction potentiometer 2 and the agitator 3 that are used for detecting the redox potential in the vitriol acid copper-plating waste water.
In the method for recovering cupric salts, settling vessel 5 adopts tilted plate separator in above-mentioned electroplating acid copper waste water.
In the method for recovering cupric salts, pressure filter 8 adopts the accurate pressure filter of micropore, is provided with the water inlet pipe 9 and the water pump 10 that are used for carrying clear water on pressure filter 8 in above-mentioned electroplating acid copper waste water.
Claims (4)
1, method for recovering cupric salts in a kind of electroplating acid copper waste water is characterized in that method for recovering cupric salts may further comprise the steps in this electroplating acid copper waste water:
(1) in vitriol acid copper-plating waste water, adds alkali under the stirring, make the wastewater oxidation reduction potential reach 850-900;
(2) copper plating wastewater after adding alkaline purification flows into the settling vessel precipitation, through precipitation, contain in the copper plating wastewater input pressure filter of throw out mantoquita and carry out the mantoquita press filtration, resulting throw out mantoquita repeatedly washs with clear water, again with 4% sulfuric acid dissolution to saturated, can be back to the electro-coppering groove;
(3) supernatant liquor flows into the neutralization tank neutralization.
2, method for recovering cupric salts in the electroplating acid copper waste water according to claim 1, the instrument that it is characterized in that being used for detecting the redox potential in the vitriol acid copper-plating waste water is to adopt oxidation-reduction potentiometer.
3, method for recovering cupric salts in the electroplating acid copper waste water according to claim 1 and 2 is characterized in that settling vessel adopts tilted plate separator.
4, method for recovering cupric salts in the electroplating acid copper waste water according to claim 1 and 2 is characterized in that pressure filter adopts the accurate pressure filter of micropore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100602265A CN101549917A (en) | 2008-03-31 | 2008-03-31 | Method for recovering cupric salts in electroplating acid copper waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100602265A CN101549917A (en) | 2008-03-31 | 2008-03-31 | Method for recovering cupric salts in electroplating acid copper waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101549917A true CN101549917A (en) | 2009-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100602265A Pending CN101549917A (en) | 2008-03-31 | 2008-03-31 | Method for recovering cupric salts in electroplating acid copper waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109110978A (en) * | 2018-10-26 | 2019-01-01 | 惠州市臻鼎环保科技有限公司 | The treatment process of acid etching high-concentration ammonia nitrogenous wastewater |
| CN112777710A (en) * | 2021-01-13 | 2021-05-11 | 廖婧 | Automatic recovery unit of copper-containing waste water |
| CN113560271A (en) * | 2021-07-28 | 2021-10-29 | 厦门海辰新能源科技有限公司 | Conductive clamp cleaning solution recovery device, cleaning solution recovery method and coating machine |
-
2008
- 2008-03-31 CN CNA2008100602265A patent/CN101549917A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109110978A (en) * | 2018-10-26 | 2019-01-01 | 惠州市臻鼎环保科技有限公司 | The treatment process of acid etching high-concentration ammonia nitrogenous wastewater |
| CN112777710A (en) * | 2021-01-13 | 2021-05-11 | 廖婧 | Automatic recovery unit of copper-containing waste water |
| CN113560271A (en) * | 2021-07-28 | 2021-10-29 | 厦门海辰新能源科技有限公司 | Conductive clamp cleaning solution recovery device, cleaning solution recovery method and coating machine |
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| PB01 | Publication | ||
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Open date: 20091007 |