Anaerobic-aerobic bio-filter coupled sewage processing device and sewage processing method

Abstract

The invention provides an anaerobic-aerobic bio-filter coupled sewage processing device and a sewage processing method. The device comprises an anaerobic bio-filter, which is filled with an anaerobic filler layer that is covered by a bio-membrane containing anaerobic ammonia oxidation bacteria, anaerobic methanation bacteria, and denitrifying bacteria; an aerobic bio-filter, which is filled with an aerobic filler layer that is covered by a bio-membrane containing aerobic ammonia oxidation bacteria and nitrifying bacteria; an aeration device, which is arranged on the bottom of the aerobic bio-filter; a passive internal circulation device, which is arranged on the top of the aerobic bio-filter; and a backwater device, which comprises a backwater pipe and a backwater pump. The provided technical scheme couples the ammonia oxidization bacteria, methanation bacteria and denitrifying bacteria into a water treatment system, the methanation, ammonia oxidation, short-cut nitrification, and denitrification can be achieved synchronously, and thus the problems that in the biomembrane method, the contact efficiency between bacteria and sewage is low and the denitrification efficiency is low are solved effectively.

Description

Technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to an anaerobic and aerobic biological filter coupled to a sewage treatment device and a sewage treatment method. Background technique [0002] With the development of social economy and the improvement of people's living standards, the discharge of domestic sewage and industrial water pollutants has gradually increased, and the overall environmental pollution of water bodies is still on the rise. Especially the content of ammonia nitrogen in sewage is getting higher and higher, and the phenomenon of water body eutrophication is getting more and more serious. In recent years, by investigating the status quo of the operation and management of urban sewage treatment plants, it has been found that in the process of urban domestic sewage treatment, there are generally problems such as low sewage biochemical treatment volume load, low biological denitrification efficiency, ...

AI Technical Summary

Problems solved by technology

In recent years, through the investigation of the current status of the operation and management of urban sewage treatment plants, it has been found that in the process of urban domestic sewage treatment, there are generally problems such as low volume load of sewage biochemical treatment, low efficiency of biological nitrogen removal, and insufficient carbon sources.

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