Multi-stage sewage biological treatment tank containing flexible MBR flat film

Abstract

The invention provides a multi-stage sewage biological treatment tank containing a flexible MBR flat film. A plurality of connected biological treatment tanks can sequentially perform filtering and decontaminating, a pump body connected to the biological treatment tank at the tail end can pump out filtered water in the biological treatment tank, a gas tank can aerate the sewage the biological treatment tank through an air duct, and the sewage filtering efficiency is effectively improved. The sewage enters from liquid inlet nozzles of the biological treatment tanks, and the sewage of two adjacent biological treatment tanks can pass through the connected liquid inlet nozzle and a liquid outlet nozzle. An MBR film module is installed in an installation groove arranged on the top surface of the liquid outlet nozzle, the MBR film module can block the cross section of the liquid outlet nozzle, and the sewage passes through the MBR film module to be filtered. One side of the biological treatment tank is provided with a slag discharging nozzle outwards, and the residue left after sewage filtration can be discharged outwards from the slag discharging nozzle. The decontamination process is multi-stage decontamination, the multi-stage decontamination is a combined structure, the number of the biological treatment tanks can be selected according to needs, and the use is flexible and convenient.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a multi-stage sewage biological treatment tank containing a flexible MBR flat membrane. Background technique [0002] At present, in the production process of chemical plants and food processing plants, a large amount of sewage will be produced. The sewage contains a large amount of heavy metal elements. After the sewage containing heavy metal elements is discharged, it will pollute natural water sources and cause serious pollution to soil and air. Sewage treatment is already an important task in the current production process of enterprises. There are many ways of sewage treatment. The common ones are filtration decontamination, chemical reagent decontamination and biofilm decontamination. Among them, MBR membrane biological treatment tank is biofilm decontamination. The important device used, MBR membrane biological treatment tank has been widely used in sewage treatme...

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Problems solved by technology

[0002] At present, in the production process of chemical plants and food processing plants, a large amount of sewage will be produced. The sewage contains a large amount of heavy metal elements. The sewage containing heavy metal elements will pollute natural water sources and cause serious pollution to soil and air.

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