Integral anaerobic film-biologic reactor-natural ventilating biologic filter pool sewage treating technique

Abstract

A one-piece anaerobic membrane-bioreactor-natural ventilation biological filter sewage treatment process relates to the multicity sewage treatment technology and is used for multicity sewage treatment and the treatment of organic waste water which has the similar water property with municipal sewage. The present invention comprises a one-piece anaerobic membrane-bioreactor (1), a suction pump (2), and a natural ventilation biological filter (3). The municipal sewage is firstly treated in the one-piece anaerobic membrane-bioreactor (1), here, chemical dephosphorization agent is added into the one-piece anaerobic membrane-bioreactor (1), and the contamination to the membrane can be reduced at the same time; then the municipal sewage is put into the natural ventilation biological filter (3) by means of the suction pump (2) or the action of water head, wherein the residual organic contaminant and ammonia nitrogen are removed. The present invention has the advantages of that: the floor space is small, any manually strengthened mechanical aeration equipment is not needed, the energy consumption is small, the sludge productivity is low, the effluent water has a good water property and the investment cost and actual operating cost are greatly reduced.

Description

technical field [0001] The integrated anaerobic membrane-bioreactor-natural ventilation biofilter sewage treatment process relates to urban sewage treatment technology and is used for urban sewage treatment and industrial organic wastewater treatment with water properties similar to urban sewage. technical background [0002] For urban sewage treatment, aerobic secondary biological treatment or biological nitrogen and phosphorus removal processes including aerobic aeration are generally used in my country at present. These conventional biological treatment processes generally have problems such as complex process, large land occupation, high infrastructure costs and operating energy consumption, high sludge yield (0.29-0.38kgVSS / kgCOD), large sludge treatment investment and treatment costs, and operating costs. It is about 0.46 yuan / ton of sewage, which makes it difficult for many small and medium-sized cities with relatively backward economic development to raise funds for ...

AI Technical Summary

Problems solved by technology

Naturally ventilated biofilters have the lowest energy consumption. However, in actual use, naturally ventilated biofilters have low hydraulic loads. The excessive growth of heterotrophic microorganisms in the medium will block the filter, affecting the normal operation of the filter and the water treatment effect

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