Discoloration process for dyeing and weaving wastewater treatment

Abstract

The invention provides a discoloration process for dyeing and weaving wastewater treatment. The discoloration process for treatment comprises steps as follows: S1, production wastewater is introducedinto an adjusting tank, and sewage is homogenized and averaged through the adjusting tank; S2, a homogenized and averaged waste liquid is introduced into an anaerobic oxidation channel for hydrolyticacidification; S3, the hydrolyzed waste liquid is introduced into a primary settling tank for sludge-water separation; S4, a supernatant liquid in the primary settling tank is sent into an aerobic oxidation channel for organic matter decomposition; S5, the treated mixed liquid is introduced into a secondary settling tank for secondary sludge-water separation; S6, a supernatant liquid in the secondary settling tank is sent into a final sedimentation tank, and a treating agent is added for coagulating sedimentation until the liquid meets the discharge standard. Through hydrolysis and acidification action of anaerobes in the tank, part of macromolecular organic matter in water is degraded into micromolecular organic matter, the biodegradability of the sewage is improved, chromophoric groups of some dye molecules are broken through, and the chromaticity of the sewage is reduced.

Description

technical field [0001] The invention relates to the field of yarn dyeing work, in particular to a dyeing and weaving wastewater treatment decolorization process. Background technique [0002] At present, dyes are used to dye yarns when dyeing yarns. Due to the needs of dyeing, the dyes used in the production process must be reactive dyes. The characteristics of sewage are high chroma, relatively low COD, and biochemical The performance is relatively poor. When treating the dyed wastewater, when using the general dyeing wastewater treatment process, the wastewater cannot be completely treated. It is easy to cause the color in the treated wastewater to affect the discharge of the wastewater. The traditional push The biochemical treatment process in the form of flow is difficult to adapt to the fluctuation of water quality. Therefore, it is particularly important to design a process for wastewater treatment to address the above problems. Contents of the invention [0003] I...

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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a dyeing and weaving wastewater treatment and decolorization process, through the hydrolysis and acidification of anaerobic microorganisms in the pool, part of the macromolecular organic matter in the water is degraded into small molecular organic matter, and the waste water can be improved. Biochemical, and break the chromophoric groups of certain dye molecules, reduce the chromaticity of sewage, and solve the problem that the traditional push-flow biochemical treatment process is difficult to adapt to the fluctuation of water quality, which leads to the inability to completely remove the color of wastewater

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