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Recovery method and recovery system for gold-containing wastewater

A recovery method and technology of a recovery system, applied in the field of gold-containing wastewater recovery method and its recovery system, can solve the problems of waste of resources and inability to realize efficient recovery of gold, and achieve the effects of high-efficiency recovery, reduced treatment costs, and simple operation

Inactive Publication Date: 2020-04-28
深圳市祺鑫环保科技有限公司
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Problems solved by technology

[0002] The gold-plating process of the circuit board and electroplating industry will produce a large amount of gold-containing wastewater. The gold-containing wastewater generated in the gold-plating process usually includes gold-containing wastewater with high gold content and gold-containing wastewater with low gold content. Gold-containing wastewater with high gold content The waste water mainly comes from the invalid and scrapped plating solution and the waste liquid produced by the first-stage washing operation, and its gold content is about 0.1g / L-0.2g / L. Recycling and treatment by enterprises; the gold-containing wastewater with low gold content is mainly from the waste liquid produced by the second or third-level washing operation, and its gold content is about 2ppm. This part of the gold-bearing wastewater is usually directly discharged to the wastewater treatment station for unified treatment. Neither of these two treatment methods can achieve efficient recovery of gold in wastewater, resulting in waste of resources

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  • Recovery method and recovery system for gold-containing wastewater
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  • Recovery method and recovery system for gold-containing wastewater

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in t...

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Abstract

The invention discloses a recovery method and a recovery system for gold-containing wastewater. Wherein the gold-containing wastewater comprises first gold-containing wastewater and second gold-containing wastewater, the content of gold in the first gold-containing wastewater is higher than the content of gold in the second gold-containing wastewater, and the recovery method of the gold-containingwastewater comprises the following steps of carrying out electrolysis operation on the first gold-containing wastewater to obtain metal gold; mixing the electrolyzed first gold-containing wastewaterwith the electrolyzed second gold-containing wastewater to obtain mixed wastewater; and carrying out adsorption operation on the mixed wastewater by adopting gold adsorption resin to obtain gold-loaded resin. According to the technical scheme, efficient recovery of gold in the gold-containing wastewater can be achieved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a recovery method of gold-containing wastewater and a recovery system thereof. Background technique [0002] The gold-plating process of the circuit board and electroplating industry will produce a large amount of gold-containing wastewater. The gold-containing wastewater generated in the gold-plating process usually includes gold-containing wastewater with high gold content and gold-containing wastewater with low gold content. Gold-containing wastewater with high gold content The waste water mainly comes from the invalid and scrapped plating solution and the waste liquid produced by the first-stage washing operation, and its gold content is about 0.1g / L-0.2g / L. Recycling and treatment by enterprises; the gold-containing wastewater with low gold content is mainly from the waste liquid produced by the second or third-level washing operation, and its gold content is ab...

Claims

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Application Information

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IPC IPC(8): C25C1/20C22B11/00C22B7/00
CPCC22B7/005C22B11/00C25C1/20Y02P10/20
Inventor 汪前程黄文涛梁民
Owner 深圳市祺鑫环保科技有限公司
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