Method for treating dye waste water

A technology of dye wastewater and treatment method, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. To achieve the effect of short processing process, simple method and fast speed

Inactive Publication Date: 2015-12-23
朱忠良
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Problems solved by technology

However, the pretreatment process of this method is complicated, and the filter membrane is used many times during the treatment process, which increases the cost of wastewater treatment and is not conducive to the promotion of this method.

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  • Method for treating dye waste water

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Embodiment Construction

[0040] The technical solutions of the present invention will be further described below through specific embodiments.

[0041] The present invention is a kind of processing method of dye waste water, and it comprises the following steps:

[0042] (1) Pretreatment: Wastewater is collected through the drainage pipe network and enters the sewage treatment system. The waste water first passes through the grid mesh to remove the large particle suspended matter contained in the water, and then flows into the waste water tank with a stirring device.

[0043] The separation efficiency of traditional mechanical grids and screens is very low. In this design, mechanical rotating grids are used to remove solid substances to ensure the smooth operation of subsequent processes.

[0044] (2) Dosing of catalytic oxidant and hydrogen peroxide solution: add catalytic oxidant and hydrogen peroxide to the waste water pool, and turn on the stirring device for stirring.

[0045] (3) Sand filtrati...

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Abstract

The invention provides a method for treating dye waste water. The dye waste water subjected to catalytic oxidation in advance is subjected to anaerobic-aerobic treatment, and then the waste water subjected to anaerobic-aerobic treatment is subjected to activated carbon adsorption and then drained out. Due to the fact that the dye waste water has the characteristics of being high in salt content and COD concentration, part of COD loads are reduced by carrying out catalytic oxidation at the front end in advance, sanitary sewage diluting and anaerobic-aerobic treatment are carried in the middle to reduce COD of the waste water, meanwhile, the salt content is reduced, the anaerobic-aerobic biochemical process can be carried out, activated carbon adsorption is conducted, and sewage water treatment is completed. The method is simple, moderate in reaction condition, high in speed and easy to operate, and a catalyst adopted during pretreatment can be recycled. During the reaction, acidic conditions are not needed, the pH value does not need to be adjusted, and consumption of a large amount of acid is avoided. The treatment process is short, and treatment efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a treatment method for dye wastewater. Background technique [0002] Due to the characteristics of dye wastewater with high COD, high chroma, high salt content, difficult biodegradation of organic matter, and large changes in water quality and quantity over time (indirect discharge of wastewater), dye wastewater has become a difficult point in the field of industrial wastewater treatment. Since the 1970s, developed countries have begun to invest a lot of money in environmental governance. On the one hand, they have improved the production process, implemented source control, and minimized the discharge of wastewater in production. On the other hand, they have explored various methods to treat dye wastewater. Purify. The treatment of dye wastewater includes various methods. According to different treatment principles, the treatment methods can be mainly divided into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 朱忠良
Owner 朱忠良
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