Method and apparatus for on-line ultrasonic cavitation cleaning of membrane bioreactor

Abstract

The invention relates to an online ultrasonic cavitation cleaning membrane-bioreactor method and device, relating to a novel membrane-bioreactor cleaning method and device for treating water and waste water. The on-line ultrasonic cavitation cleaning membrane-bioreactor device provided by the present invention includes an inlet pump, a bioreactor, a membrane module arranged in the bioreactor, and an outlet pump connected to the membrane module, and is characterized in that the bioreactor An ultrasonic generator is provided inside, and the ultrasonic generator is connected with an external control device, and a differential pressure gauge is installed on the outlet pipe of the membrane module, and the differential pressure gauge is connected with the ultrasonic control device through a signal line. The method and the device do not need to take the membrane module out of the bioreactor, the operation procedure is simple, the required cycle is short, the device structure is simple, the operation is stable, and it is convenient for automatic operation and control. In addition, the amount of sludge in the bioreactor can be reduced while ultrasonic cavitation is used, which contributes to the long-term stable operation of the membrane-bioreactor.

Description

technical field [0001] The invention relates to a new membrane-bioreactor cleaning method and device for treating water and waste water, in particular to an online ultrasonic cavitation cleaning membrane-bioreactor method and a device for realizing the method. Background technique [0002] The shortage of water resources has become an important restrictive factor that hinders the sustainable development of social economy and affects the stability of social life. my country's per capita water resources are only equivalent to 1 / 4 of the world's per capita water resources, ranking 110th in the world, and the temporal and spatial distribution is very uneven. According to reports, among the 668 cities in my country, about 400 are short of water, and more than 100 are seriously short of water. Especially in recent years, with the rapid development of social economy, the demand for industrial and agricultural water has grown rapidly, and the problems of water resource waste and wa...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the deficiencies of the existing membrane-bioreactor cleaning method, and provides an online ultrasonic cavitation cleaning membrane-bioreactor device, which can overcome the need to remove the membrane module from the bioreactor for offline ultrasonic cavitation cleaning. The shortcomings of complex procedures, cumbersome operations, long periods of time, and only professional and technical personnel can carry out the implementation

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