Modified biocarrier used in waste water processing anaerobic tank

Abstract

The invention provides a modified biocarrier used in a waste water processing anaerobic tank. The basic material is high-density polyethylene. The modified functional materials are active alumina, iron powder and coke. The auxiliary material is talcum powder. The modified biocarrier has a density of 0.93-1.05g / cm<3>, the surface is rough, the specific surface area is large, the impact resistance is strong, and falling-off of a microbial film adhering to the outer surface of the carrier caused by friction among the carriers can be prevented in water. The biocarrier has a small contact angle with sewage, the carrier hydrophilia is raised, and microorganisms are easy to adhere onto the carrier. The biocarrier contains enhanced components of biological enzymes and promotes catalytic action of biological enzymes, the biological activity is high, metabolism is rapid, and the decomposition capability of pollutants in water can be raised substantially. The biocarrier contains ultraviolet resistant components, the service life is more than 30 years, and replacing and maintenance are not needed.

Description

technical field [0001] The invention relates to a biological carrier used for wastewater treatment, in particular to a modified biological carrier used in an anaerobic tank for wastewater treatment. Background technique [0002] The biofilm moving bed method is widely used in the sewage treatment process because of its advantages of stable operation, high load impact resistance, economy and energy saving. The core technology of the biofilm moving bed method is the biofilm carrier, and the characteristics of the biofilm carrier determine the efficiency of the moving bed biofilm treatment process. However, most of the currently produced biofilm carriers are directly made of polymer resin materials such as polyethylene and polypropylene. Therefore, the produced biocarriers have poor biocompatibility, easy to fall off the biofilm on the outer surface of the carrier, and have a low removal rate of ammonia nitrogen. [0003] High-density polyethylene has good heat resistance and ...

AI Technical Summary

Problems solved by technology

Recently, the patents whose publication numbers are CN1762851A, CN101066800A and CN102887591A disclose the use of high-density polyethylene material as the base material and the addition of modified functional materials to prepare biological carriers. Although the prepared biological carriers have roughness and large specific surface area , long service life and other advantages, but there are also disadvantages such as the long time required for the biological carrier to form a film, and the outer surface of the carrier is not easy to form a film.

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