An anaerobic biological treatment equipment for domestic sewage

Abstract

The present invention provides an anaerobic biological treatment device for domestic sewage, which comprises an algae reaction tank, and the algae reaction tank includes an input port, an algae cultivation compartment, an algae filter screen and an output port. The domestic sewage flows in from the input port and flows through the algae covered on the surface of the algae cultivation compartment, and performs preliminary harmless treatment under the photosynthesis of the algae and the symbiosis between the algae and bacteria. In the invention, the mesh port of the algae filter screen is connected to the filter port of the algae culture compartment, the algae culture medium particles are arranged in the algae filter screen, and the algae culture medium particles are used to cover the mesh holes of the algae filter screen and the surface of the culture medium particles. The algal structure filters the sewage out. The invention utilizes the biological characteristics and filters the sewage through the algae filter net structure to obtain denitrified water body. The denitrified water body will not cause eutrophication of the water body after watering the plants, does not affect the original 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 device for domestic sewage. Background technique [0002] At present, the density of houses in cities is gradually increasing, and the density of population living is also gradually increasing. Since domestic sewage is rich in organic matter, such as protein, carbohydrate, fat, urea, ammonia nitrogen, etc., and there are also a large number of pathogenic microorganisms, such as parasite eggs and enteric infectious viruses, it is necessary to collect and clean domestic sewage in time. deal with. Once the domestic sewage is not treated in time, the organic matter in it is easily corrupted in summer and produces foul odors, and it is also easy to provide nutrients for the bacteria and pathogens in it, resulting in the spread of infectious diseases. [0003] At present, domestic sewage in my country is mainly treated by biochemical methods...

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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