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Regeneration circulation system and regeneration circulation method of copper sulfate etching solution

A copper sulfate and etching solution technology, applied in the direction of improving process efficiency, can solve the problem of low copper recovery rate, and achieve the effect of improving recovery rate and production efficiency

Pending Publication Date: 2018-11-30
NANJING SHUNYE ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the recovery rate of copper is not high for prior art

Method used

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  • Regeneration circulation system and regeneration circulation method of copper sulfate etching solution
  • Regeneration circulation system and regeneration circulation method of copper sulfate etching solution
  • Regeneration circulation system and regeneration circulation method of copper sulfate etching solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The regenerative circulation system of copper sulfate etching solution includes waste liquid storage tank, reactor, filter, copper recovery device and ion exchanger.

[0032] The outlet of the waste liquid storage tank is connected to the reactor, and the reactor is respectively connected to the inlet of the copper recovery device and the inlet of the filter, the outlet of the filter is connected to the inlet of the ion exchanger, and the outlet of the ion exchanger connected to the reactor. A magnetic field is also provided around the reactor.

[0033] The waste liquid storage tank is used for the storage of copper sulfate; the filter is used to filter some suspended solids or impurities with large particles; the reactor is used for replacement reaction to generate copper; the ion exchanger is equipped with The strongly acidic cation exchange resin is used to exchange and remove iron ions; the copper recovery device is used to recover copper obtained by electrolytic u...

Embodiment 2

[0038] The regenerative circulation system of copper sulfate etching solution includes waste liquid storage tank, reactor, filter, copper recovery device and ion exchanger. The outlet of the waste liquid storage tank is connected to the reactor, and the reactor is respectively connected to the inlet of the copper recovery device and the inlet of the filter, the outlet of the filter is connected to the inlet of the ion exchanger, and the outlet of the ion exchanger connected to the reactor. A magnetic field is also provided around the reactor.

[0039] like image 3 As shown, the filter includes a body 1 , a water inlet device 2 , a grease layer 3 , an intermediate drain device 4 , a filter layer 5 and a drain device 6 . The main body 1 is a cylindrical structure, and the inside is provided with a grease-pressing layer 3 and a filter layer 5 sequentially from top to bottom, a water inlet device 2 is provided above the inside of the body 1, a drainage device 6 is provided at t...

Embodiment 3

[0043] The regenerative circulation system of copper sulfate etching solution includes waste liquid storage tank, reactor, filter, copper recovery device and ion exchanger. The outlet of the waste liquid storage tank is connected to the reactor, and the reactor is respectively connected to the inlet of the copper recovery device and the inlet of the filter, the outlet of the filter is connected to the inlet of the ion exchanger, and the outlet of the ion exchanger connected to the reactor. A magnetic field is also provided around the reactor.

[0044] like image 3 As shown, the filter includes a body 1 , a water inlet device 2 , a grease layer 3 , an intermediate drain device 4 , a filter layer 5 and a drain device 6 . The main body 1 is a cylindrical structure, and the interior is provided with a grease-pressing layer 3 and a filter layer 5 sequentially from top to bottom. The upper part of the body 1 is provided with a water inlet device 2, and the bottom is provided with...

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Abstract

The invention discloses a regeneration circulation system and a regeneration circulation method of a copper sulfate etching solution, and belongs to the field of wastewater treatment. The regenerationcirculation method comprises that a copper sulfate etching solution in a waste liquid storage tank flows into a reactor; iron powder is added to the reactor, a displacement reaction is performed to obtain copper, the copper enters a copper recovery device, and recovery treatment is performed; the waste liquid after the reaction enters a filter, and sequentially flows through the pressure resin layer and the filtering layer of the filter so as to remove impurities; the filtrate is subjected to ion exchange through an ion exchange membrane in an ion exchanger, and the iron-ion-removed solutionenters the reactor again; and iron powder is added to the reactor, and the incompletely-reacted copper sulfate is further subjected to a complete reaction so as to cyclically recover the copper. According to the present invention, the filtrate after the reaction can flow through the reactor and be subjected to the displacement reaction after the ion exchange, such that the copper sulfate can be subjected to the complete reaction so as to improve the recovery rate of copper.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a regeneration cycle system and a regeneration cycle method of a copper sulfate etching solution. Background technique [0002] With the development of the electronics industry, there are more and more electrical appliances, and the corresponding etching solution is also widely used. The recycling of the etching solution after use has become an important issue. [0003] The Chinese patent application with the application number CN201720258040.5 discloses an etching waste liquid recovery device, including a pH adjustment tank and a sedimentation tank. The upper end of the pH adjustment tank is provided with an acidic etching waste liquid inlet, and the upper end of the pH adjustment tank is close to the acid One side of the etching waste liquid inlet is provided with an alkaline etching waste liquid inlet, one side of the pH adjustment tank is provided with a react...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/46C22B7/00C22B15/00
CPCC22B7/006C22B15/0091C23F1/46Y02P10/20
Inventor 许其飞杜垚
Owner NANJING SHUNYE ENVIRONMENTAL PROTECTION TECH