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Electrolytic copper and method for producing electrolytic copper from concentrated nitric acid copper-containing wastewater

A technology of concentrated nitric acid and electrolytic copper, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problem that wastewater cannot meet the comprehensive discharge standards of pollutants, consumes large amounts of clean water and alkaline substances, and cannot recover copper ions and other issues, achieving significant social and economic benefits, small investment, and short processing procedures

Inactive Publication Date: 2017-01-11
广沣金源(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the treatment of copper-containing wastewater in concentrated nitric acid has been treated by dilution and neutralization with alkaline substances. During the treatment process, a large amount of clear water and alkaline substances need to be consumed, and the recovery of neutralized products is difficult. The production cost of finishing the treated product is too high, which makes it impossible to comprehensively utilize it. At the same time, the treated wastewater cannot meet the comprehensive pollutant discharge standard. After the above wastewater is discharged into the water body, it will cause serious eutrophication of the water body, which is easy Water bodies cause secondary pollution
At the same time, the trace copper ions contained in the wastewater cannot be recovered, resulting in waste of resources

Method used

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  • Electrolytic copper and method for producing electrolytic copper from concentrated nitric acid copper-containing wastewater
  • Electrolytic copper and method for producing electrolytic copper from concentrated nitric acid copper-containing wastewater
  • Electrolytic copper and method for producing electrolytic copper from concentrated nitric acid copper-containing wastewater

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Effect test

Embodiment 1

[0050] A method for producing electrolytic copper by utilizing concentrated nitric acid copper-containing wastewater, comprising the following steps:

[0051] Step (1): Mix the concentrated nitric acid copper-containing wastewater with the carbonyl-containing alkaline solution at a volume ratio of 1:1, and fully react;

[0052] Step (2): centrifuging the reacted mixed solution to obtain a solid precipitate and a copper-containing waste liquid; the solid precipitate is a nitrogen fertilizer containing amide nitrogen and nitrate nitrogen;

[0053] Step (3): Using a strongly acidic cation exchange resin to perform ion exchange adsorption on the copper-containing waste liquid in step (2), to obtain a strongly acidic cation exchange resin saturated with adsorption;

[0054] Step (4): Backwashing the saturated strongly acidic cation exchange resin in step (3) with 5% sulfuric acid solution to obtain copper sulfate solution;

[0055] Step (5): Pass the copper sulfate solution in ste...

Embodiment 2

[0057] A method for producing electrolytic copper by utilizing concentrated nitric acid copper-containing wastewater, comprising the following steps:

[0058] Step (1): Mix the concentrated nitric acid copper-containing wastewater with the carbonyl-containing alkaline solution at a volume ratio of 1.5:1, and fully react;

[0059] Step (2): centrifuging the reacted mixed solution to obtain a solid precipitate and a copper-containing waste liquid; the solid precipitate is a nitrogen fertilizer containing amide nitrogen and nitrate nitrogen;

[0060] Step (3): Using a strongly acidic cation exchange resin to perform ion exchange adsorption on the copper-containing waste liquid in step (2), to obtain a strongly acidic cation exchange resin saturated with adsorption;

[0061] Step (4): Backwashing the saturated strongly acidic cation exchange resin in step (3) with 5% sulfuric acid solution to obtain copper sulfate solution;

[0062] Step (5): Pass the copper sulfate solution in s...

Embodiment 3

[0064] A method for producing electrolytic copper by utilizing concentrated nitric acid copper-containing wastewater, comprising the following steps:

[0065] Step (1): Mix the concentrated nitric acid copper-containing wastewater with the carbonyl-containing alkaline solution at a volume ratio of 2:1, and fully react;

[0066] Step (2): centrifuging the reacted mixed solution to obtain a solid precipitate and a copper-containing waste liquid; the solid precipitate is a nitrogen fertilizer containing amide nitrogen and nitrate nitrogen;

[0067] Step (3): Using a strongly acidic cation exchange resin to perform ion exchange adsorption on the copper-containing waste liquid in step (2), to obtain a strongly acidic cation exchange resin saturated with adsorption;

[0068] Step (4): Backwashing the saturated strongly acidic cation exchange resin in step (3) with 5% sulfuric acid solution to obtain copper sulfate solution;

[0069] Step (5): Pass the copper sulfate solution in ste...

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Abstract

The invention belongs to the field of industrial wastewater treatment and provides electrolytic copper and a method for producing the electrolytic copper from concentrated nitric acid copper-containing wastewater. The method comprises the steps of thoroughly mixing the concentrated nitric acid copper-containing wastewater with an alkaline solution containing carbanyl groups for a reaction, and separating mixed liquid obtained after the reaction, so that solid sediment and copper-containing waste liquid are obtained; subsequently, adsorbing copper ions in the copper-containing waste liquid with adsorbent, and after the copper ions are adsorbed to be saturated, backwashing the adsorbent with a sulfuric acid solution, so that a copper sulfate solution is obtained; and then, conducting electrolysis on the copper sulfate solution, so that the electrolytic copper is obtained. By means of the method for producing the electrolytic copper from the concentrated nitric acid copper-containing wastewater, nitric acid in the wastewater can be converted into a nitrogen fertilizer containing amide nitrogen and nitrate nitrogen, and the copper ions can be converted into an electrolytic copper product; meanwhile, the treated wastewater can reach the Comprehensive Water Pollutant Emission Standard of Beijing City; the problem of treatment of the concentrated nitric acid copper-containing wastewater is well solved; and resources are recycled, and the environment is protected.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to electrolytic copper and a method for producing electrolytic copper by using concentrated nitric acid copper-containing wastewater. Background technique [0002] With the continuous and rapid development of society, people's material living standards are constantly improving, and people's requirements for living environment are also getting higher and higher. However, with the continuous development of industrial society and the continuous increase of population, our living environment has not improved, but has deteriorated day by day. In particular, the pollution of industrial wastewater is becoming more and more serious, the composition is becoming more and more complex, and the degradation is becoming more and more difficult, which poses a great threat to water bodies and human health. Therefore, the treatment of industrial wastewater has become the focus of envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/12C02F9/04C02F101/16C02F101/20
CPCC02F1/28C02F1/461C02F1/66C02F9/00C02F2101/163C02F2101/20C25C1/12Y02P10/20
Inventor 刘晓鹏王吉财闫峰马强杨文芳
Owner 广沣金源(北京)科技有限公司