Copper, nickel and chromium-containing ferric chloride etching solution regeneration and reusing device and method

A technology of ferric chloride corrosion and equipment, applied in the direction of photography, electrodes, instruments, etc., can solve the problem of inability to meet the national discharge standard of copper, nickel, and chromium-containing wastewater that is difficult to treat, low metal element recycling rate, and sewage treatment. The problem of high cost, to achieve the effect of high degree of automation, significant economic benefits and good stability

Pending Publication Date: 2017-08-18
广东三才环保科技有限公司
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Problems solved by technology

The above simple sewage treatment method has a very low recycling rate of metal elements. In addition, the mixed liquid of various metals is mixed and discharged before sewage treatment, which is not targeted, resulting in high sewage treatment costs.
In addition, the current national sewa

Method used

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  • Copper, nickel and chromium-containing ferric chloride etching solution regeneration and reusing device and method

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Embodiment Construction

[0035] Please refer to figure 1 Shown, it has shown the concrete structure of the preferred embodiment of a kind of copper, nickel and chromium-containing ferric chloride etching solution recycling equipment of the present invention, including an etching machine 10, a waste liquid collection tank 20, A waste liquid storage tank 30 , an ion membrane electrolyzer 40 and a circulation tank 50 .

[0036] The etching machine 10 production line produces industrial ferric chloride waste liquid containing copper, nickel and chromium ions. The etching liquid parameter monitoring device 11 is installed in the etching machine 10. By testing the oxidation-reduction potential value and specific gravity of the ferric chloride etching liquid , acidity and temperature to automatically control the potion parameters of the ferric chloride etching solution in the stainless steel etching machine 10.

[0037] The waste liquid collection tank 20 communicates with the etching machine 10. Specifical...

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Abstract

The invention discloses a copper, nickel and chromium-containing ferric chloride etching solution regeneration and reusing device and method. The device comprises an etching machine, a waste liquor collection tank, a waste liquor storage tank, an ion film electrolyser and a circulating tank. The ion film electrolyser comprises an anode area and a cathode area. The circulating tank comprises an anode circulating tank and a cathode circulating tank. Anode liquor and cathode liquor which are electrolyzed in the ion film electrolyser flow into the anode circulating tank and the cathode circulating tank correspondingly. The anode liquor in the anode circulating tank is pumped into the etching machine by a first high-pressure pump. The cathode liquor in the cathode circulating tank is subjected to temperature regulation and then is pumped into the cathode area of the ion film electrolyser by a second high-pressure pump to form a cycle. The process is an online regeneration process. The concentrations of copper, nickel and chromium ions of the regenerated ferric chloride etching solution are reduced. The oxidation-reduction potential meets the requirement. The regenerated ferric chloride etching solution can be cyclically used. Recycled copper, nickel and chromium alloy can be sold directly. Economic benefits are remarkable.

Description

technical field [0001] The invention relates to the technology in the field of environmental protection, in particular to a device and method for regenerating and recycling ferric chloride etching solution containing copper, nickel and chromium. Background technique [0002] The ferric chloride wastewater discharged from the cleaning section of the etching machine production line of PCB and electroplating enterprises contains a large amount of copper, nickel, chromium, etc. During sewage discharge, ferric chloride wastewater is generally mixed with wastewater containing metal elements such as gold and tin, and then discharged to the sewage treatment tank together, and a general-purpose precipitation reagent is added to the treatment tank for preliminary chemical reactions to make some metal elements After simple recycling, the sewage is discharged. The above simple sewage treatment method has a very low recycling rate of metal elements. In addition, the mixed solution of va...

Claims

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Application Information

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IPC IPC(8): C23F1/46C23F1/08C25C1/24C25C7/02
CPCC23F1/08C23F1/46C25C1/24C25C7/02
Inventor 王成青
Owner 广东三才环保科技有限公司
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