Anaerobic biological treatment equipment for domestic sewage

Abstract

The invention provides anaerobic biological treatment equipment for domestic sewage, which comprises an algae reaction tank, and the algae reaction tank comprises an input port, an algae culture interlayer, an algae filter screen and an output port. Domestic sewage flows in from the input port, flows through the algae covering the surface of the algae culture interlayer, and is subjected to primary harmless treatment under the photosynthesis of the algae and the symbiosis between algae and bacteria. A screen opening of the algae filter screen is connected to a filter opening of the algae culture interlayer, algae culture medium particles are arranged in the algae filter screen, and sewage is filtered and flows out through the culture medium particles, screen holes of the algae filter screen and an algae structure covering the surfaces of the culture medium particles. According to the invention, the biological characteristics are utilized, sewage is filtered through the algae filter screen structure to obtain a denitrified water body, and the denitrified water body does not cause eutrophication of the water body after plants are watered, does not influence the primary environment, and is green and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an anaerobic biological treatment equipment for domestic sewage. Background technique [0002] At present, the housing density in the city is gradually increasing, and the population density is also gradually increasing, and the total amount of domestic sewage discharge in the urban sewage pipe network has become an obvious upward trend. Since domestic sewage is rich in organic matter, such as protein, carbohydrates, fat, urea, ammonia nitrogen, etc., and there are also a large number of pathogenic microorganisms, such as parasite eggs and intestinal infection viruses, etc., it is necessary to collect and collect domestic sewage in time. deal with. Once the domestic sewage is not treated in time, the organic matter in it will easily rot and produce stench when the temperature is high in summer, and it will also easily provide nutrients for bacteria and pathogens in it, ...

AI Technical Summary

Problems solved by technology

[0005] Moreover, the existing domestic sewage treatment equipment only mechanized sedimentation and filtration of larger solid impurities in domestic sewage, and then chemically replaces some nutrients such as nitrogen and phosphorus in domestic sewage

Such sewage treatment equipment requires a large space for domestic sewage to settle naturally, and it is also very troublesome to clean up the sediment later. The treated sewage contains more nutrients such as nitrogen and phosphorus. If it is discharged like this and used as irrigation water, it will affect The surrounding environment even causes eutrophication of the surrounding water body

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