Method and device for recycling hot-dip copper waste liquid

A waste solution and plating solution technology, applied in chemical instruments and methods, metallurgical wastewater treatment, water/sludge/sewage treatment, etc., can solve problems such as high energy consumption, complicated process flow, high sewage treatment fees, etc. Low cost, convenient process, and the effect of saving sewage treatment costs

Inactive Publication Date: 2021-12-10
周雪阳
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process is complicated and energy consumption is high. In addition, transportation costs, production costs and profits of sewage treatment enterprises need to be borne by production enterprises, and copper plating production enterprises need to pay high sewage treatment fees.

Method used

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  • Method and device for recycling hot-dip copper waste liquid

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Embodiment Construction

[0033] refer to figure 1 , the production device is: there are two plating solution pools of the first plating solution pool 1 and the second plating solution pool 2, and another oxidation pool 3 with a stirring device inside, and the top surface of the oxidation pool 3 is provided with an air release valve 14 and Filling and pH value material test port 15; the delivery pipeline is connected between the bottom of the first plating solution pool 1 and the oxidation tank 3, and the first booster pump 5 is arranged on the delivery pipeline, and the top of the first plating solution pool 1 is connected to the oxidation tank 3. The bottom of the pool 3 is connected to the delivery pipeline, and the first clear liquid on-off valve 11 is provided on the delivery pipeline; the delivery pipeline is connected between the bottom of the second plating solution pool 2 and the oxidation tank 3, and a second Booster pump 6, the second plating solution tank 2 top and oxidation tank 3 bottoms ...

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Abstract

The invention relates to a method and a device for recycling a hot-dip copper waste liquid. The method comprises the following steps: feeding a waste liquid in a plating solution tank into an oxidation tank, adding hydrogen peroxide into the oxidation tank, adding compressed air into the oxidation tank, stirring 4-6 times to recover the pressure of a gas part at the upper portion of the oxidation tank to normal pressure, adding copper oxide into the oxidation tank, adjusting the pH value of the solution to 3.5-4, keeping for 8-10 hours, draining back the clear liquid in the oxidation tank to the plating solution tank, and after the residual turbid liquid in the oxidation tank is stirred for 8-10 minutes, making the turbid liquid flow into a turbid liquid recycling tank; and after the turbid liquid is subjected to solid-liquid separation, pumping the liquid into the plating solution tank to be reused, and recovering and storing the solid after being dried or air-dried. According to the invention, a copper plating enterprise can remove excessive ferrous ions in a waste liquid on site in a copper plating place by using simple equipment, a convenient process and low cost, copper ions in the waste liquid are recycled, and the ferrous ions are finally converted into a chemical raw material ferric hydroxide, so that closed-loop recycling is realized, high sewage treatment cost is saved for the enterprise, and considerable profits can be earned for enterprises due to cost difference.

Description

technical field [0001] The invention relates to a method and a device for reusing hot copper plating waste liquid, which are used for reusing copper plating waste liquid. Background technique [0002] There are two main methods of hot-dip copper production process. One is to directly discard the copper plating waste liquid, which causes waste of resources and environmental pollution. It violates the "National Environmental Protection Law" and must be prohibited; the other is to send the copper plating waste liquid to professional sewage Processing enterprises, recovery of crystalline copper sulfate, to achieve resource reuse. However, the process is complicated and energy consumption is high. In addition, transportation costs, production costs and profits of sewage treatment enterprises need to be borne by production enterprises, and copper plating production enterprises need to pay high sewage treatment fees. Contents of the invention [0003] The object of the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C25D21/18C01G49/02C02F101/20C02F103/16
CPCC02F9/00C25D21/18C01G49/02C02F1/722C02F1/66C02F1/5236C02F1/001C02F2101/20C02F2101/203C02F2103/16
Inventor 周雪阳
Owner 周雪阳
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