Inner-loop anaerobic membrane bioreactor treatment method and equipment for high-concentration organic wastewater

Abstract

The invention discloses inner-loop anaerobic membrane bioreactor treatment method and equipment for high-concentration organic wastewater. The treatment method of the organic wastewater comprises the following steps: A) inoculating anaerobic sludge into a first reaction chamber and a second reaction chamber; B) transporting the organic wastewater to the first reaction chamber through a water inlet pipe, forming an inner loop through a first three-phase separator, the second reaction chamber, a second three-phase separator and a gas-water separator sequentially, and separating a mixed liquid through a membrane component in the circulating process, so as to obtain produced water; C) enriching methane generated in the first reaction chamber and the second reaction chamber through the first three-phase separator and the second three-phase separator sequentially, feeding to the gas-water separator, separating and then producing methane; and D) separating and then producing methane by the gas-water separator, supplying a part of the methane to the membrane component in a pressurizing manner, feeding to the gas-water separator through the second three-phase separator, so as to form methane circulation aeration. The invention also discloses equipment for achieving the method. The high-concentration organic wastewater (such as farm and sideline food processing industry and livestock and poultry breeding wastewater) is processed by adopting the method disclosed by the invention, thus high-load and short-flow one-step standard reaching can be achieved.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment and new energy, and in particular relates to a treatment method for high-concentration organic waste water. [0002] The present invention also relates to processing equipment for realizing the above method, more specifically, the equipment is an internal circulation anaerobic membrane bioreactor. Background technique [0003] As a typical high-concentration organic wastewater, agricultural and sideline food processing wastewater has high pollutant concentration, large discharge volume and low compliance discharge rate, and has great potential for pollution reduction and resource utilization. According to the yearbook statistics, in 2010, the wastewater discharge of the agricultural and sideline food processing industry (including corn processing, livestock and poultry breeding, etc.) was 13.2×10 8 t, ranked 4th among 41 classified industries, while the emission compliance rate was ...

AI Technical Summary

Problems solved by technology

The problem with these combined water treatment processes is that the process is even longer than the food processing process, which brings operational difficulties such as complex management and large footprint to the factory, and the need for short process is urgent

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