Textile wastewater treatment method and device

Abstract

The invention discloses a textile wastewater treatment method and device. The treatment device comprises an A / O (Anoxic / Aerobic) biochemical treatment unit, an MBR (Membrane Bioreactor) membrane treatment unit and an MBR advanced concentrated solution treatment unit, wherein the top of a biochemical precipitation tank is communicated with an MBR reaction tank through a pipeline, the bottom of the MBR reaction tank is connected with the MBR advanced concentrated solution treatment unit, The MBR membrane treatment unit is communicated with the A / O biochemical treatment unit through a sludge reflux pipe, and the MBR advanced concentrated solution treatment unit is communicated with the A / O biochemical treatment unit through a wastewater reflux pipe. The textile wastewater flows into the biochemical precipitation tank after being subjected to the A / O biochemical treatment, effluent from the biochemical treatment unit enters the MBR reaction tank, and production water is subjected to suction, so that the production water is discharged to an outlet after meeting standards; and the textile wastewater containing a part of refractory substances enter an MBR mud-water separation and precipitation tank to perform mud-water separation, and after the COD (Chemical Oxygen Demand) in the mud-water separation and precipitation tank reaches a preset value, the effluent in the mud-water separation and precipitation tank is discharged and subjected to the advanced treatment.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a textile wastewater treatment method and a treatment device thereof. Background technique [0002] Wastewater from the textile industry has the characteristics of large water volume, complex composition, and serious environmental pollution. At present, the domestic treatment of this kind of wastewater generally adopts secondary biochemical treatment methods, supplemented by necessary physical and chemical treatment methods, to treat textile wastewater to meet the standards of "GB / T4287-92" before discharge. During the treatment process, a large amount of chemicals needs to be added, which in turn produces a large amount of physical and chemical sludge, causing secondary pollution to the environment. With the development of the textile industry, more difficult-to-degrade sizing materials, dyes, surfactants, dyeing and finishing processing aids, acids, alkalis, etc. are ...

AI Technical Summary

Problems solved by technology

During this treatment process, a large amount of chemicals need to be added, which in turn produces a large amount of physical and chemical sludge, causing secondary pollution to the environment

With the development of the textile industry, more difficult-to-degrade sizing materials, dyes, surfactants, dyeing and finishing processing aids, acids, alkalis, etc. are widely used in the textile industry. Seeking New Methods for Textile Wastewater Treatment

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