Printing and dyeing sewage treatment system and treatment method thereof

Abstract

The invention discloses printing and dyeing sewage treatment system and a treatment method thereof. The printing and dyeing sewage treatment system comprises a machine body, a lower part of the machine body is connected with a plurality of support columns, an air floating zone is arranged inside the machine body, a first inlet pipe is arranged on the upper left side of the machine body, a right side of the first inlet pipe is connected with a water distributor, the left side of the water distributor is provided with a plurality of fixing rods, and the left end of the fixing rod is connected tothe inner side of the left side wall of the machine body, the water distributor includes a water distribution main pipe connected to the first inlet pipe, a plurality of water distribution branch pipes are connected to the lower portion of the water distribution main pipe, several water outlet holes are arranged on the right side of the water distribution branch pipe, and a biological oxidation reaction zone is arranged in the middle of the air floating zone. The sewage treatment system has the advantages of simple and compact structure, can effectively perform air flotation treatment and biological oxidation treatment on the printing and dyeing wastewater generated by a printing and dyeing industry, and purifies the water quality in the printing and dyeing sewage.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment equipment, in particular to a printing and dyeing sewage treatment system and treatment method. Background technique [0002] 70% of the dyes used in my country's printing and dyeing industry are benzidine-type azo dyes, which are the main source of aniline substances in printing and dyeing sewage. Aniline is a highly toxic substance that has carcinogenic, teratogenic, and mutagenic effects. Contact with the substance can cause poisoning. [0003] The treatment of aniline at home and abroad includes adsorption method, extraction method, photocatalytic oxidation method, chlorine dioxide oxidation method, etc., but in reality, many dyeing factories cannot use the above methods at all, because the equipment cannot keep up, the investment is large, and the technology is lacking. Contents of the invention [0004] The object of the present invention is to overcome the deficiencies of the ...

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Problems solved by technology

[0003] The treatment of aniline at home and abroad includes adsorption method, extraction method, photocatalytic oxidation method, chlorine dioxide oxidation method, etc., but in reality, many dyeing factories cannot use the above methods at all, the equipment cannot keep up, the investment is large, and the technology is lacking, etc.

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