Water treatment method for purifying sewage by use of microorganisms

Abstract

The invention relates to the water treatment field and specifically relates to a water treatment method for purifying sewage by use of microorganisms. The water treatment method is characterized by comprising at least the steps of arranging at least one biochemical bed in a water area to be treated and arranging a frame with a through opening on the biochemical bed. The water treatment method has the advantages that excellent microbial slow release effect can be produced, the microbial diversity in the water area is greatly increased, the reproduction and growth environment for the microorganisms is greatly improved and the influence of activity decline of the microorganisms in winter is counteracted, and the addition volume ratio of the biochemical bed relative to the water area to be treated is greatly lower than that of a filler in a conventional biochemical process.

Description

technical field [0001] The invention relates to the field of water quality treatment, in particular to a water treatment method using microorganisms to purify sewage, in particular to a water treatment method using slow release to release microorganisms to purify sewage. Background technique [0002] In today's society, due to the acceleration of urbanization, industrial pollution, pollution from rural livestock and poultry breeding, pollution from aquaculture residual bait and manure, and pollution from agricultural planting fertilizers, water habitats are degraded, and water quality and bottom quality are seriously polluted, which not only directly affects the The development of aquaculture has also brought adverse effects on the development of human living environment, agriculture and other industries. [0003] Due to the aggravation of water pollution and people's increasing attention to water habitats, the field of water treatment should also develop rapidly. At present...

AI Technical Summary

Problems solved by technology

[0004] The existing suspended microbial carriers are mostly made of plastics such as polystyrene, polyethylene, polypropylene, etc. The disadvantage of these carriers is that the surface is hydrophobic. In the case of strong turbulent flow, it is difficult for microorganisms to grow outside the carrier, so the surface area is limited. low utilization

[0005] The invention patent with the application number 201110397629.0 discloses a kind of enhanced biofiller, which uses chopped activated carbon fibers and gaps in activated carbon particles on the porous substrate to adsorb microorganisms, but the slow release of microorganisms on the biofiller can The level is very low, that is, the sustained-release action time is very short, which is likely to cause the demise of the dominant microbial community in a short period of time

[0006] The invention patent with the application number 200810023783.X discloses a microbial water purification slow-release body, which uses porous natural ore particles as a carrier, and microbial water purification bacteria or bacterial groups are implanted in the pores of the porous natural ore particles, but the porous natural ore particles When the ore particles are subjected to a large force of water flow, the microorganisms in the pores are easily impacted and released quickly, so the slow-release effect is very limited.

[0007] The invention patents with application numbers of 200610132379.7 and 201010582869.3 respectively disclose a microbial suspension carrier for water treatment. The suspension carrier is composed of pumice and hydrophobic foam or activated carbon particles arranged in a plastic spherical shell with holes on the surface, wherein the pumice or The surface of foamed plastics or activated carbon particles is used as a growth area for microorganisms, and the plastic ball shell has a grid to release microorganisms, but microorganisms are still only attached to the surface voids of pumice or foamed plastics or activated carbon particles. The containment capacity is very limited, and it is particularly easy for microorganisms to be released quickly by the impact of water flow, and the slow-release effect is still very limited, and the slow-release time generally does not exceed 5-7 days

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