Method and apparatus of impulse fluid jet type membrane bioreactor

Abstract

The invention provides a method of a pulse-jet membrane bioreactor and a device for realizing the method. The method adopts a jet aerator to replace a traditional blower to realize the cross-flow scouring effect of membrane components; wherein, circulating fluid flows through the jet aerator at high speed; air enters the jet aerator in a pulse way by a valve controlled by PLC and jets at the bottom through a gas spreading distributor; the PLC system regulates the cross-flow state of gas-liquid two-phase flow on the membrane surface by changing circulation flow rate and pulse frequency, so as to improve the scouring effect of the air to the membrane surface, to further control membrane pollution, to improve the energy utilization efficiency of a circulating pump and to reserve energy. The use of the jet aerator also increases the utilization efficiency of oxygen and improves sludge degradation effect. The device has the advantages of low operation energy consumption and low operation noise, slight membrane pollution, less early investment in equipment, simple structure of the device, small occupation area, simple and convenient operation and convenience in automatic running and control.

Description

Device and method of use of a pulse jet membrane bioreactor technical field The invention relates to a pulse-jet type membrane bioreactor device and use method, and belongs to the technical field of sewage treatment and reuse, and membrane bioreactors. Background technique With economic development and population growth, the scale of cities in our country continues to expand, water consumption continues to increase, and water supply is increasingly insufficient. The continuous improvement of the level of urbanization and the rapid development of industry have made the water environment pollution more and more serious. In order to solve the problems of water resource shortage and water environment pollution, many countries have carried out research on sewage recycling. Membrane bioreactor (Membrane Bioreactor, MBR) has received widespread attention due to its excellent and stable effluent quality. The research on MBR began in the 1960s. As a new and efficient sewage treat...

AI Technical Summary

Problems solved by technology

Due to the continuous jet aeration, the membrane fouling can only be further controlled by adjusting the aeration volume, and because the gate valve is used to control the circulation pump flow, the operation is inconvenient

Images