Special flocculation decolorizing agent for fur oxidation dyeing sewage and preparing method thereof

Abstract

The invention relates to the field of animal fur treatment technologies, in particular to a special flocculation decolorizing agent for fur oxidation dyeing sewage and a preparing method thereof. The special flocculation decolorizing agent for fur oxidation dyeing sewage is prepared from the following raw materials in parts by weight: 10-20 parts of a flocculant, 10-40 parts of an inorganic oxidant, 10-40 parts of an inorganic base and 10-50 parts of an absorbent. The method is carried out in the way that the special flocculation decolorizing agent for fur oxidation dyeing sewage is prepared through the mixing of the raw materials in the parts. The flocculation decolorizing agent is mainly used as a special efficient flocculation decolorizing agent for the treatment of fur oxidation dyeing sewage, is simple in constitution, convenient to produce and use and low in cost, has a great flocculation decolorizing effect, can effectively remove oxidation dye intermediates from the sewage, and can reduce the chromacity and COD (Chemical Oxygen Demand) of the sewage, so that the qualified emission or recycling utilization of the oxidation dye sewage is realized.

Description

technical field [0001] The invention relates to the field of animal fur treatment technology, in particular to a special flocculation decolorizer for fur oxidative dyeing sewage and a preparation method. Background technique [0002] Oxidative dyeing in the fur manufacturing process is a process in which hydrogen peroxide is used as an oxidizing agent to oxidize and develop the color of oxidation dye monomers on wool fibers. [0003] Pollutants in oxidative dyed sewage mainly include: oxidative dye monomers, macromolecular oxidative dye color precipitates after reaction, residual hydrogen peroxide, etc. [0004] The COD of sewage is between 3000mg / L and 15000mg / L, and the chroma of sewage is relatively heavy, and it is not easy to completely decolorize. The pollutants mainly include: oxidation dye monomers, macromolecular oxidation dye lakes, residual hydrogen peroxide, etc. [0005] Dye molecular lakes with larger molecular weights can be removed by flocculation and sedim...

AI Technical Summary

Problems solved by technology

Therefore, the problem of wastewater treatment of oxidation dye dyeing has always been a difficult problem in the industry; some manufacturers use low-COD and low-chroma wastewater to dilute oxidation dye wastewater to achieve the purpose of discharge standards, but the high cost and complicated operation greatly restrict oxidation dyes. Promotion of dyeing technology

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