Method for treating comprehensive sewage in fine chemical industry park

Abstract

The invention discloses a method for treating comprehensive sewage in a fine chemical industry park, and belongs to the technical field of sewage treatment environmental protection. The treatment method is a combined process of a plurality of units, and mainly comprises a front-section iron-carbon micro-electrolysis unit, a composite hydrolytic acidification unit, a composite biochemical treatment unit, a rear-section iron-carbon micro-electrolysis unit and a deep treatment unit. The method has the advantages of reasonable process combination, high impact load resistance, strong treatment capacity and stable and up-to-standard effluent quality; the method is suitable for the treatment of comprehensive sewage in a fine chemical industry park, such as pesticide chemical wastewater, dye pigment chemical wastewater, essence and fragrance chemical wastewater, cosmetic health-care product wastewater, food and feed additive wastewater, daily chemical wastewater, production and domestic sewage mixed with the wastewater and the like.

Description

technical field [0001] The invention relates to a treatment method for industrial sewage, in particular to a treatment method for comprehensive sewage in a fine chemical industry park, and belongs to the technical field of environmental protection. Background technique [0002] Fine chemical industry is one of the most dynamic emerging fields in today's chemical industry, and it is an important part of new materials. The fine chemical industry has a wide range and a wide variety, including about 40 industries such as dyes, pesticides, pharmaceuticals, spices, paints, photosensitive materials and daily chemicals. It serves many industries of the national economy and various fields of high-tech industries. Vigorously developing fine chemicals has become the strategic focus of countries all over the world to adjust the structure of the chemical industry, improve the energy level of the chemical industry, and expand economic benefits. There are many ways to classify fine chemi...

AI Technical Summary

Problems solved by technology

The main process of this method includes multi-stage and alternating biological treatment methods such as UASB anaerobic sludge expansion tank, aerobic biological filter, mud membrane MBBR and activated sludge, which is not conducive to giving full play to the advantages of biological treatment, and the effluent quality is poor , can not be discharged directly to the external environment

[0007] Chinese patent application 201510506359.0 discloses a comprehensive treatment method for chemical wastewater, including a pre-treatment system, a primary biochemical system, an ozone treatment system, a secondary biochemical system, and a post-treatment system. Both the pre-treatment system and the post-blowing system use A large amount of coagulants and precipitants, high operating costs

This method is the superposition of conventional treatment methods, and the specific treatment effect is not explained. Fine chemical wastewater is a relatively special type of wastewater, and it needs to be improved on the basis of conventional treatment methods to obtain better treatment effects.

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