Rotary tubular dynamic membrane bioreactor adopting nonwovens and sewage treatment method thereof

Abstract

A rotary tubular dynamic membrane bioreactor adopting nonwovens and a sewage treatment method thereof belong to the technical field of environmental engineering. The invention is characterized in that tubular filter modules are manufactured by wrapping up the hollow tubes with holes on the walls by the nonwovens; an electric motor is used for driving the tubular filter modules fixed on discs to rotate; and under the action of a suction pump, the treating water enters into the hollow inside of the tubular filter modules, is collected to a main collector tube by radial collector tubes on the discs and then is discharged. By adopting the nonwovens to manufacture the filter modules, the bioreactor has low cost; the dynamic membranes on the surfaces of the nonwovens are used for improving the filtration precision; and the rotating speed is regulated according to variation of the operation pressure, thus effectively maintaining proper thickness of the dynamic membranes and ensuring permanent and stable running of the reactor. The invention has the benefits of adopting the microporous aerator with high oxygen utilization efficiency and reducing energy consumption. The tubular filter modules can be dismantled independently and are simple and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering and relates to sewage treatment and reclaimed water reuse technology, in particular to a method for reducing the process cost of a membrane bioreactor and realizing membrane pollution control. Background technique [0002] my country is short of water resources and is one of the 13 water-poor countries in the world. More than 400 of the more than 600 cities across the country are short of water, and the industrial output value reduced due to water shortage exceeds 120 billion yuan per year. Utilizing reclaimed water with lower water quality and price than drinking water for greening, washing cars, and flushing sanitary appliances can save precious water resources, ease the contradiction between supply and demand of urban water, and reduce the burden on urban drainage systems. Membrane bioreactor (MBR) is considered to be one of the most promising sewage treatment and reuse techn...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a sewage treatment method that controls membrane fouling and reduces the cost of membrane components. Using this method to design and construct membrane bioreactors can not only keep all the advantages of membrane bioreactors, but also effectively overcome the The membrane fouling that is widely used in membrane bioreactor technology is difficult to control and the cost of membrane modules is high, which reduces the energy consumption required for aeration, and greatly reduces the investment and operating costs of membrane bioreactor technology engineering applications. , so as to promote the promotion and popularization of the process

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