Rotary type biological film sewage treatment system

Abstract

The invention relates to a rotary type biological film sewage treatment system. The sewage treatment system comprises a bio-reaction tank, wherein a biological rotating plate is arranged in the reaction tank and comprises a rotating shaft and a plurality of plate bodies arranged on the rotating shaft; a gas guiding tube is arranged in the rotating shaft; an aeration plate is further arranged at an end of the rotating shaft; an aeration tube is arranged in the aeration plate; the gas guiding tube communicates with the aeration tube; a plurality of aeration holes which communicate with the aeration tube are formed in the upper surface of the aeration plate; and a water inlet and a water outlet are further formed in a side wall of the bio-reaction tank. The rotating plate is vertical and is totally soaked in water, the gas guiding tube is arranged in the rotating shaft, so that the rotating shaft can be fed with air or oxygen to carry out aeration, and biological films covered by the plate bodies of the rotating plate can be utilized fully; and when anaerobic layers of the biological films require to be thickened, the rotating speed of the rotating plate can be increased to enable the biological films to drop.

Description

technical field [0001] The invention relates to a rotary biofilm sewage treatment system. Background technique [0002] In the prior art, the biological turntable process is a kind of biofilm sewage biological treatment technology, which is the artificial reinforcement of sewage irrigation and land treatment. It grows and breeds on the filler carrier of the biological turntable to form a film-like biological sludge—biofilm. [0003] As a bioreactor for aerobic treatment of wastewater, the biological turntable can be said to have emerged with the popularity of plastics. The reactor is composed of a water tank and a set of discs: dozens or nearly a hundred pieces of plastic or fiberglass discs are connected by shafts and placed flat on the surface of a bar-shaped tank with a semicircular cross-section. The diameter of the disc is generally no more than 4 meters, and the diameter of the groove is about a few centimeters larger. There is a motor and a reduction device to rotat...

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