Integrated ozone coupled ceramic membrane type MBR (membrane bioreactor) and treatment process

Abstract

The invention aims to develop an efficient sewage deep treatment system according to the characteristics of secondary effluent quality of municipal wastewater to reduce pollution of sewage to the environment, increase the circulation utilization rate of water and create better environmental benefits, social benefits and economic benefits. According to an integrated ozone coupled ceramic membrane type MBR (membrane bioreactor) and treatment process, the system comprises an ozonization reaction zone (1), an anoxic reaction zone (2), an anaerobic reaction zone (3), aerobic ceramic membrane type MBRs (4), a backwashing water tank (5), a ceramic membrane assembly (6), a water inlet pump (7), an ozone generator (8), an oxygen bottle (9), a sludge reflux pump (10), an effluent pump (11), an air blower (12), gas flowmeters (13), water check valves (14), an electromagnetic valve (15), a tail gas treatment device (16), an inner reflux pump (17), a time controller (18), a sand core filter plate (19), a flowmeter (20), an electromagnetic valve (21) and a time controller (22). The reaction device and process mainly comprises an ozonization process, an anoxic-anaerobic-aerobic biological treatment process and a membrane filtration process. Ozonization is coupled with biological treatment and membrane filtration for treatment of secondary effluent of municipal wastewater, and macromolecular organic components, nitrogen, phosphorus and other pollutants which are difficult to degrade are effectively removed.

Description

Technical field [0001] The invention relates to the field of urban municipal sewage treatment, in particular to an ozone oxidation process coupled with a ceramic membrane bioreactor treatment system to treat the secondary effluent of municipal wastewater, which is of great significance to the deep purification of sewage and the reuse of reclaimed water. Background technique [0002] Water resources are basic natural resources, the total amount of water on the earth is 1.4 billion km 3 About, but only a quarter is fresh water, and most of them exist in Antarctica and Greenland. They remain frozen and unusable, so only 200,000 km 3 Fresh water is available for human use. my country has 7 percent of the world’s water resources, and the total amount of water resources ranks fourth, but my country is a populous country, and the per capita water resources are only a quarter of the world average, 2300m 3 , Located in the ranks of water scarce countries. With the acceleration of industri...

AI Technical Summary

Problems solved by technology

With the development of cities and industries, water quality is becoming more and more complex, and the original secondary treatment is difficult to meet the first-class A standard for sewage discharge

Most of the secondary effluent of municipal wastewater is refractory organic matter, which has poor biodegradability, and the phosphorus concentration cannot meet the discharge standard. It is often necessary to add chemical agents to reduce the phosphorus content in the sewage

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