Reactor device and method for anammox biological denitrification of urban waste water

Abstract

The invention relates to a device and method for treating urban waste water through an immobilized anammox baffled-membrane bioreactor. The device is an integrated system integrating microbial immobilization, an anaerobic baffled reactor and a membrane bioreactor, and is composed of five parts of a water inlet system, the anaerobic baffled reactor, the membrane bioreactor, a water outlet system and a water bath circulation system. The anaerobic baffled-membrane bioreactor is adopted for running an anammox process, a microbial immobilization technology is introduced, a non-woven fabric carrierused by immobilized microorganisms is placed in the anaerobic baffled reactor, sludge loss under the low hydraulic retention time condition is reduced, the reactor running load is increased, and meanwhile membrane fouling is slowed down. Sludge in the membrane bioreactor flows back into the anaerobic baffled reactor regularly. According to the technology, no carbon source needs to be added, the waste water treatment effect is good, the cost is low, and the sludge loss problem does not exist.

Description

technical field [0001] The invention belongs to the technical field of waste water biological treatment, and relates to a device and method for treating urban sewage by using an anaerobic baffle reactor combined with a membrane bioreactor to operate anaerobic ammonium oxidation and microbial immobilization technology. Background technique [0002] With the continuous acceleration of urbanization and industrialization, the urban population has increased rapidly, and the generation of urban sewage has continued to increase, which has become the main component of national wastewater. Urban sewage contains a large amount of organic matter, ammonia nitrogen, etc., which are the main factors that cause eutrophication of water bodies and destroy the ecological balance of water bodies. In the past ten years, the traditional denitrification process, namely nitrification and denitrification process, has gradually developed and matured, and has become the most widely used biological de...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems that the total nitrogen in the effluent cannot reach the standard when the existing biological denitrification technology treats urban sewage, the operating cost is high, and the sludge loss is serious under the condition of low hydraulic retention time, the present invention proposes a combination of "microbial immobilization + anaerobic The integrated system of baffle reactor + membrane bioreactor" is used for the biological denitrification of urban wastewater, and provides an effective process mode and reactor form for the standard treatment of urban sewage. The process is simple, low cost and energy consumption. Low, good water quality

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