Device and method for coupling efficient biological treatment and sludge reduction of trademark fabric production wastewater

Abstract

The invention discloses a device and a method for coupling efficient biological treatment and sludge reduction of trademark fabric production wastewater. The device comprises a neutralization tank, an adjusting tank connected with an outlet of the neutralization tank, a facultative tank connected with an outlet of the adjusting tank, a first-stage sedimentation tank connected with an outlet of the facultative tank, an aerobic tank connected with an outlet of the first-stage sedimentation tank, and a second-stage sedimentation tank connected with an outlet of the aerobic tank, and an outlet of the first-stage sedimentation tank and an outlet of the second-stage sedimentation tank are respectively connected with an inlet of the adjusting tank. According to the method disclosed by the invention, FeCl2 is added into inlet water of the adjusting tank, so that the pH of the alkaline wastewater is reduced, trace elements for growth of activated sludge microorganisms are provided, the activity of the microorganisms and the flocculation precipitability of the sludge are improved, and the biodegradation efficiency of the wastewater and the adsorption removal of antimony are improved. According to the method, the biological treatment efficiency of the wastewater can be improved while sludge reduction is realized, the operation is simple, the cost is relatively low, and engineering is easy.

Description

technical field

[0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for high-efficiency biological treatment of wastewater produced by trademark fabrics coupled with sludge reduction. Background technique

[0002] Label fabric production belongs to one of the subdivided fields of the textile printing and dyeing industry. It mainly produces coated and uncoated label fabrics for printing labels. The types of products include ordinary ribbons, dyed label belts, coated belts, polyester belts, and cotton belts. , non-woven belts, etc., are widely used in clothing, shoes and hats, bags, toys, bedding, travel products, gift packaging and other fields that require trademarks. The production of trademarked fabrics mainly includes spinning, warping, bleaching and dyeing, setting, coating, calendering and other processes. The wastewater generated not only contains pollutants such as dyes and pastes contained in conventi...

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