Sewage treatment method and sewage treatment system of combined dynamic membrane bioreactor

Abstract

The embodiment of the invention discloses a sewage treatment method and a sewage treatment system of a combined dynamic membrane bioreactor, and is used for maintaining high-efficiency activated sludge and relatively high nitrification efficiency and improving the probability of pollutant removal. The method comprises the following steps: combining a regulating tank with an anaerobic tank throughan anaerobic regulating tank, and decomposing organic polymer pollutants in sewage flowing in through a grid into organic low-molecular pollutants by utilizing the degradation capacity of facultativeanaerobic microorganisms and anaerobic microorganisms so as to obtain first sewage containing the organic low-molecular pollutants; decomposing the first sewage containing organic low-molecular pollutants into carbon dioxide and water by utilizing the decomposition capacity of aerobic microorganisms through a biological membrane reaction tank to obtain treated second sewage; intercepting the treated second sewage through a biological membrane separation tank by utilizing an improved polyvinylidene fluoride (PVDF) membrane and a self-generated dynamic membrane to obtain treated third sewage, enabling intercepted sludge to flow back to the anaerobic regulation tank, and removing nitrogen by utilizing a denitrification effect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, and relates to a sewage treatment method of a combined dynamic membrane bioreactor, a sewage treatment system and a sewage treatment device. Background technique [0002] With the development and progress of society, creating a good ecological environment has risen to a national strategic level, among which water ecology has also attracted increasing attention. At present, the level of urbanization in my country is continuously improving, and the population tends to be concentrated, while the water consumption and sewage discharge of towns are also increasing. However, the infrastructure of towns and towns is seriously behind the development of town construction, including the lack of necessary sewage collection systems and treatment systems. The disorderly discharge of sewage from residents and farmers, and the use of livestock and poultry breeding, pesticides and chemical fertilizers a...

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Problems solved by technology

However, in the prior art, the effect of sewage treatment is not very good

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