Biogas circulating electromagnetic anaerobic membrane bio-reactor for wastewater treatment

Abstract

The invention discloses a biogas circulating electromagnetic anaerobic membrane bio-reactor for wastewater treatment. A reaction tank is separated into a main reaction area and a membrane separation area; the main reaction area and the membrane separation area are communicated at the bottom of the reaction tank; the top in the reaction tank is provided with a biogas collection area; magnetic biological carriers are added into the reaction tank; electrode plates and guide plates are arranged in the main reaction area; the electrode plates are connected with a direct current power supply; membrane components and a membrane washing device are arranged in the membrane separation area; one end of a biogas circulating system on the outer top of the reaction tank is connected with the biogas collection area, and the other end of the biogas circulating system is connected with the membrane washing device; the bottom of the reaction tank is provided with a sludge hopper and a wastewater distribution system; the wastewater distribution system is connected with a wastewater pipeline and a wastewater circulating system; and the water inlet of the wastewater circulating system is communicated with the upper part of the main reaction area of the reaction tank. By the wastewater distribution system, membrane pollution can be reduced, the service life of the membranes is prolonged, and the capacity of treating toxic refractory pollutants of the anaerobic membrane bio-reactor is enhanced.

Description

technical field [0001] The invention belongs to the field of water pollution treatment and prevention, in particular to a biological gas circulation type electromagnetic anaerobic membrane bioreactor used for wastewater treatment. Background technique [0002] Anaerobic Membrane Bio-Reactor (AMBR for short) is a new type of water treatment technology that combines anaerobic biological technology with high-efficiency membrane separation technology. It is mainly realized by using membrane modules immersed in anaerobic biological pools Solid-liquid separation, retention of anaerobic microorganisms and macromolecular organic matter in the tank. This technology has the advantages of maintaining high microbial concentration, increasing the organic load of the reactor, reducing the area occupied by sewage treatment facilities, reducing the amount of residual sludge, and making some refractory macromolecular organic substances decompose to the maximum due to the prolonged residence ...

AI Technical Summary

Problems solved by technology

However, the unavoidable membrane fouling problem has become an important factor hindering the rapid development of AMBR technology.

AMBR can be divided into two types: separate AMBR and integrated AMBR. The separate type is helpful for equipment cleaning, replacement and addition, but the shear force generated by the high-speed rotation of the circulating pump will inactivate some microbial cells. ; The integrated type does not use the mixed liquid circulation pump, which can save the pipeline configuration for circulation, but the membrane cleaning is more difficult, and the membrane fouling problem is more difficult to solve

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