A kind of biological carrier used in the anaerobic and anoxic section of sewage treatment and its preparation method and application

Abstract

The present invention relates to a biological carrier used in anaerobic and anoxic stages of sewage treatment. The biological carrier comprises high density polyethylene, calcium carbonate, stearic acid or stearate, carbonate, polyhydroxy fatty acid amide, trace elements, biological enzymes, an antioxidant, an ultraviolet absorber and a peroxide additive. The invention further provides a preparation method of the biological carrier. The carrier can realize a good fluidized state, has good hydrophilicity and a fast film forming speed, and can massively enrich hydrolyzed bacteria, denitrifying bacteria and anaerobic ammonium oxide bacteria, has high strength, high wear resistance and high extrusion resistance, can adapt to mechanical stirring in the anaerobic and anoxic stages, and has the advantages of good anti-aging and anti-ultraviolet radiation performances, strong biofilm adsorptivity, firmness in the formed film, and extremely high promotion values.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a biological carrier used in the anaerobic and anoxic sections of sewage treatment and its preparation method and application. Background technique [0002] With the rapid development of the economy, the ensuing environmental problems have been closely concerned by the whole society, among which, urban sewage treatment is closely related to people's life. At present, the sewage treatment of urban sewage treatment plants in my country generally includes anaerobic and anoxic sections, but there are still many problems in the carriers used in anaerobic and anoxic sections. [0003] For example, because the anaerobic and anoxic sections cannot be aerated and stirred, traditional suspended fillers are lighter than water and prone to floating and accumulating. Due to the poor hydrophilicity of the traditional suspended packing itself, and the speed of biofilm formation in the anaerobic...

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Problems solved by technology

[0003] For example, because the anaerobic and anoxic sections cannot be aerated and stirred, traditional suspended fillers are lighter than water and prone to floating and accumulating

Due to the poor hydrophilicity of the traditional suspended packing itself, and the speed of biofilm formation in the anaerobic and anoxic section is much slower than that in the oxygen section, it is difficult for the conventional suspended packing to meet the requirements of the fluidized biological carrier in the anaerobic and anoxic sections. water requirements

Due to the special treatment environment of the anaerobic and anoxic sections, it is difficult for conventional suspended fillers to adapt to the environment of hydrolytic bacteria, denitrifying bacteria and anammox bacteria in the water body

Since the anaerobic and anoxic sections need to be fluidized by mechanical agitation, it is difficult for traditional suspended fillers to meet the requirements of anti-aging, anti-wear and wear resistance.

[0004] In summary, the existing carriers used in the anaerobic and anoxic stages are difficult to meet the needs of large-scale sewage treatment

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