Self-oxygenating enhanced biological rotating disc sewage treatment device

Abstract

The invention discloses a self-oxygenating enhanced biological rotating disc sewage treatment device, and relates to the field of sewage treatment devices. The sewage treatment device comprises a sewage treatment device shell, a driving shaft and a biological rotating disc structure; the biological rotating disc structure comprises a biological rotating disc and a plurality of circles of water-carrying self-oxygenating pipes, and the water-carrying self-oxygenating pipes are arranged in a surrounding manner along the driving shaft; the biological rotating disc comprises a middle filler fixingdisc, a driving shaft fixing flange, macro-porous crude fiber biological filler and water-carrying self-oxygenating pipe fixing grooves; and a first sludge collection and return pipe and a second sludge collection and return pipe are transversely arranged on the two sides of the bottom in the sewage treatment device shell. The sewage treatment device has the advantages of high biofilm culturing efficiency, large biofilm culturing quantity and richer flora, the pollutant removal efficiency of the whole biological rotating disc process is improved to a great extent, the whole structure is beneficial to repair and maintenance, the operation is simple, the operation cost is low, and the sewage treatment device has a wide application prospect in the field of rural sewage treatment with low pollutant concentration and small water quantity.

Description

technical field [0001] The invention belongs to the field of sewage treatment devices, in particular to a self-oxygenation enhanced biological turntable sewage treatment device. Background technique [0002] With the large-scale construction of domestic large and medium-sized urban sewage treatment plants, the current urban sewage treatment rate in my country has exceeded 97%, which has greatly improved the domestic water environment pollution. However, nearly 50% of my country's population is still located in rural areas, and the current rural sewage treatment rate is less than 30%. Domestic sewage, aquaculture wastewater, and farmland non-point source pollution from rural areas are the most important sources of pollution in China. For rural domestic sewage, due to its relatively scattered and small water volume, integrated devices are generally used in China for treatment. The main treatment processes used by these integrated devices are: AO process, A2O process, contact o...

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Problems solved by technology

However, nearly 50% of my country's population is still located in rural areas, and the current rural sewage treatment rate is less than 30%. Domestic sewage, aquaculture wastewater, and farmland non-point source pollution from rural areas are the most important sources of pollution in China.

Compared with other sewage treatment integrated devices that use blast aeration and oxygenation, this kind of biological turntable integrated device generally has the problems of low oxygenation efficiency, large area occupied by the device, and poor treatment effect. The main reason why there are fewer biological turntable process devices on the market than conventional blower aeration and oxygenation process devices

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