Preparation and application of a fixed bioactive filler

Abstract

The invention discloses preparation and an application of fixed-type bioactive fillers, and belongs to the technical field of water treatment. Fillers are each composed of a carrier and an embedding body, and the fillers are fixed on a prefabricated frame to form the fixed-type bioactive fillers; each carrier is composed of multiple layers of polyvinyl alcohol non-woven fabrics and one layer of textile fabric; each embedding body is formed by boric acid cross-linking fixation of an embedding liquid; the embedding liquid is formed by mixing an bacteria concentrated solution and a polyvinyl alcohol solution. Each carrier is soaked in the embedding liquid, the non-woven fabrics and the embedding body are firmly bound together through boric acid secondary cross-linking, the embedding body penetrates through textile fabric meshes to form a riveting fixing structure and does not easily fall off, and the good tensile property of the textile fabric improves the overall stability of the bioactive filler. The prepared bioactive fillers not only solve the problems that bacteria in an activated sludge method are low in concentration, easy to lose and the like, have the advantages of simple method, cheap raw materials, high strength, good stability, strong water flow shocking resistance ability and the like, shorten the reaction start-up time, and have broad application prospects.

Description

technical field [0001] The invention relates to the preparation and application of a fixed biologically active filler in water treatment, in particular to a fixed biologically active filler with textiles and polyvinyl alcohol non-woven fabrics as carriers, belonging to the technical field of water treatment. Background technique [0002] Making full use of the biosorption and biodegradation of microorganisms in the environment to realize the treatment and disposal of pollutants in wastewater is an optimal route for research and practice in the field of wastewater treatment. At present, the biological treatment methods mainly include activated sludge method and biofilm method. In the activated sludge biochemical system, the competition among bacteria is fierce, and it is difficult to purify the characteristic bacteria to create the ecological advantages of the characteristic bacteria. Although the biofilm method can make up for the above-mentioned shortcomings in the activate...

AI Technical Summary

Problems solved by technology

After experimental research and comparison, we found that the bioactive filler prepared based on the traditional filler structure and embedding method did not perform well in the test, and there were many problems such as poor overall stability of the bioactive filler, easy falling off of the embedded body, and water-soluble swelling.

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