Method and device for on-line ultrasonic controlling membrane pollution of fluidized bed membrane bio-reactor

Abstract

The invention provides a method and a device for on-line ultrasonic controlling membrane pollution of a fluidized bed membrane bio-reactor and relates to the method and the device for controlling membrane pollution of the novel fluidized bed membrane bio-reactor for water and waste water treatment. The device for on-line ultrasonic controlling membrane pollution of the fluidized bed membrane bio-reactor provided by the invention comprises a water inlet pump, a fluidized bed bio-reactor, a membrane module arranged inside the fluidized bed bio-reactor, a differential pressure gauge connected with the membrane module, a water outlet pump connected with the membrane module, filler particles and a circulation baffle plate. The device is characterized in that an ultrasonic generator is arranged inside the fluidized bed membrane bio-reactor and is connected with a controlling device disposed outside the bio-reactor. The method enables the membrane pollution to be well controlled, so that operation stability is improved and service life of membrane is prolonged. And the simple structure of the device and the simple operation process are convenient for automatic operation and control. In addition, sludge in the bio-reactor is reduced when ultrasonic cavitation is carried out, which is helpful for stabilized operation of the fluidized bed membrane bio-reactor for a long time.

Description

technical field [0001] The present invention relates to a novel method and device for controlling membrane pollution of a fluidized bed membrane bioreactor for treating water and waste water, in particular to an on-line ultrasonic control method for membrane pollution of a fluidized bed membrane bioreactor and a device for realizing the method . Background technique [0002] With the continuous growth of the world's population and the rapid development of industry and agriculture, water consumption and drainage are increasing year by year, while limited surface water and groundwater resources are constantly polluted, coupled with uneven distribution of regional water resources and periodic droughts, resulting in Many countries and regions are short of fresh water resources, and the contradiction between supply and demand of water resources is becoming more and more acute. my country is also one of the countries with serious shortage of water resources. The increasing short...

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Problems solved by technology

[0006] The present invention aims at the deficiencies of the existing fluidized bed membrane bioreactor membrane pollution control technology, and provides an online ultrasonic cavitation cleaning device for fluidized bed membrane bioreactors, which can effectively control and delay membrane fouling

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