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Regeneration treatment method and device for low-concentration copper sulfate sulfuric acid solution

A sulfuric acid solution, copper sulfate technology, applied in the improvement of process efficiency, photography process, instruments and other directions, can solve the problem of low recycling rate, etc., and achieve the effects of high product added value, low processing cost, and chemical material saving.

Active Publication Date: 2016-06-29
NANJING SHUNYE ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing low-concentration copper sulfate sulfuric acid solution has a simple treatment method and a low recycling rate, and invents a method that can maximize the use of the electrolyte in the waste liquid, electrolyze the copper ions, and simultaneously After the regenerated sulfuric acid solution is purified, it returns to the production line for recycling, reduces the amount of sulfuric acid, and realizes zero discharge of the waste liquid. At the same time, it can maximize the purity of the product copper. The equipment is easy to operate, and the generated copper blocks are easy to peel off. Low-concentration copper sulfate Sulfuric acid solution regeneration treatment method and device

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  • Regeneration treatment method and device for low-concentration copper sulfate sulfuric acid solution

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Embodiment 1

[0022] Such as figure 1 shown.

[0023] A kind of regeneration treatment method of low-concentration copper sulfate sulfuric acid solution, it comprises the following steps:

[0024] First, the low-concentration copper sulfate sulfuric acid solution that enters the pickling solution circulation tank 2 after being filtered by the primary purification equipment 1 enters the cathode as an insoluble metal hollow sphere (density 1.2-1.3), and the anode as an oxygen evolution anode (surface plating can be used) Electrolysis is carried out in a low metal concentration electrolytic cell 3 made of titanium plates with rare metals such as iridium, tantalum, niobium or cerium, so that metal copper is deposited on the surface of the metal ball. The upper center of the low metal concentration electrolytic cell 3 is provided with a Orifice, such as figure 2 shown. The acid concentration of the electrolyzed copper sulfate sulfuric acid solution is increased to a state that can meet the r...

Embodiment 2

[0028] Such as Figure 1-2 shown.

[0029] A regeneration treatment device for low-concentration copper sulfate sulfuric acid solution, characterized in that it includes primary purification equipment 1, pickling solution circulation tank 2, low metal concentration electrolytic tank 3, secondary purification equipment 1, metal solution concentration tank 5, The electrolytic circulation tank 6 and the copper plate recovery electrolytic tank 7, the low metal concentration electrolytic tank 3 are frustum-conical structures with a large upper part and a smaller lower part, and an overflow port is arranged on the upper part. The inlet of the primary purification equipment 1 is connected to the product waste water discharge outlet and a regeneration solution discharge outlet of the low metal concentration electrolytic cell 3, and the production line wastewater purified by the primary purification equipment 1 enters the pickling liquid circulation tank 2 from the outlet of the primar...

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Abstract

The invention relates to recycle disposal method and device for a low concentration copper sulfate sulfuric acid solution. The method comprises the following steps: adopting a cathode electrolytic ball to settle metallic copper; meanwhile, raising the acidity of the solution by cathode directly to a production line; and after copper on the cathode is melted, feeding into an electrode of a direct current electrolytic bath to form a copper plate. The method provided by the invention is simple in process, can be repeatedly used, and the copper plate is finally extracted from the low concentration waste liquid. The method and device have a very high environment-friendly value while the economic benefit is remarkable.

Description

technical field [0001] The invention relates to a wastewater treatment technology, in particular to a high-efficiency recycling treatment technology for a low-concentration copper sulfate solution, in particular to a regeneration treatment method and device for a low-concentration copper sulfate sulfuric acid solution. Background technique [0002] As we all know, low-concentration copper sulfate sulfuric acid solution is usually produced by the pickling process. The waste liquid is large, the acid content is low, and the copper content is generally around 5000ppm. The traditional treatment method is: the waste water generation unit outsources the treatment, and the environmental protection company will The waste liquid soaks iron scraps to produce sponge copper, and the tail water is discharged after simple acid-base neutralization treatment, and a large amount of sulfate substances flow into the environment, causing secondary pollution and damage to the environment. The pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/36C25C1/12
CPCC23G1/36C25C1/12Y02P10/20
Inventor 赵业伟许其飞杜垚
Owner NANJING SHUNYE ENVIRONMENTAL PROTECTION TECH
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