Technology for treating waste liquid of dacromet

A waste liquid treatment, dacromet technology, applied in filtration treatment, water/sewage treatment, reductive water/sewage treatment, etc., can solve the problem of low pollution, achieve high recycling rate, obvious energy saving and emission reduction, treatment low cost effect

Inactive Publication Date: 2018-07-20
常州市武进天工机械制造有限公司
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Problems solved by technology

The application of electrochemical oxidation-reduction reaction to the treatment of dacromet waste liquid has low pollution and high degree of automation, but how to enhance the processing speed of oxidation-reduction reaction and improve the reuse rate of wastewater has become the bottleneck of electrochemical wastewater treatment

Method used

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  • Technology for treating waste liquid of dacromet
  • Technology for treating waste liquid of dacromet

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Embodiment Construction

[0052] A process for treating waste liquid of Dacromet paint, comprising the following steps:

[0053] Step 1, concentration adjustment: the dacromet waste liquid is passed through the concentration adjustment step, and the concentration of the dacromet waste liquid is adjusted to a concentration range convenient for redox reaction.

[0054] The concentration of the dacromet waste liquid adjusted in the first step is 10-15%.

[0055] Step 2, oxidation-reduction: the adjusted dacromet waste liquid in step 1 undergoes oxidation, electrochemical and reduction reactions in sequence, and the dacromet waste liquid is separated into layers.

[0056] The redox process described in step 2 specifically includes the following steps:

[0057] ⑴ Oxidation: ORP oxidation-reduction potentiometer is used in the treatment of wastewater to transfer heavy metals to Z under automatic control. n 2+ 、C r 6+ , Metal Al 3+ Add oxidant to Dacromet wastewater such as various fiber materials to ma...

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Abstract

The invention provides a technology for treating waste liquid of dacromet, belongs to the technical field of industrial wastewater treatment, mainly relates to a technology for treating waste liquid of dacromet, and aims at solving the problems of low treatment speed of redox reaction and low wastewater recycling rate in electrochemical dacromet wastewater treatment. The technology comprises the following steps: 1, adjusting concentration, namely, adjusting the concentration of dacromet waste liquid to be within the concentration range in which the radox reaction is conveniently carried out; 2, performing radox reaction, namely, sequentially performing oxidization, electrochemical reaction and reduction reaction on the dacromet waste liquid in order to layer the dacromet waste liquid; 3, neutralizing and precipitating, namely, neutralizing the waste liquid; and separating out a precipitation layer; and 4, finely filtering, namely, filtering and finely filtering supernate to obtain clear and transparent recovered water. With the adoption of the technology, the treated wastewater is transparent and high in recycling rate; the treatment cost is low; the social benefit is high; the energy saving and emission reducing effects are obvious.

Description

technical field [0001] A waste liquid treatment process belongs to the technical field of industrial wastewater treatment, and mainly relates to a dacromet paint waste liquid treatment process. Background technique [0002] Dacromet coating is a new type of coating introduced and developed in my country in recent years. Because of its strong corrosion resistance and high hardness, Dacromet coating is widely used in highway, high-speed rail construction, military industry and civil construction industry, etc. field. Dacromet has many excellent properties, but it can only be stored for three months. If the raw material exceeds three months, it will be scrapped. Therefore, the treatment and research technology of dacromet waste liquid has become the focus of people's research at present. [0003] Dacromet waste liquid has a large amount of discharge, complex components, and difficult treatment, which is a major concern in the field of waste liquid treatment. Due to the requi...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F101/22C02F101/20
CPCC02F1/001C02F1/444C02F1/467C02F1/5245C02F1/56C02F1/70C02F1/72C02F9/00C02F2101/20C02F2101/22
Inventor 张定军霍栓成
Owner 常州市武进天工机械制造有限公司
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