Three-dimensional biological rotating disc

Abstract

The invention discloses a three-dimensional biological rotating disc which comprises a box body; a speed reducer and a gear box are arranged outside the box body; the speed reducer and the gear box are connected with each other by a bearing, and are used for adjusting and controlling the rotating speed of rotating disc modules arranged in the box body; a storage clapboard is welded between the rotating disc modules; three-dimensional filler is filled between the outer side of the storage clapboard and the rotating disc modules; and a water inlet and a water outlet are respectively formed in the two sides of the bottom of the box body. According to the three-dimensional biological rotating disc, the thickness and the concentration of a biological film on the biological rotating disc are greatly increased, so that the equipment size and the investment of the biological rotating disc are greatly reduced under the same processing scale; furthermore, after a special packing way is adopted, an anaerobic state and an oxygen deficit state can be easily formed in the biological rotating disc, so that the denitrification processing capacity of a system is improved; and the aged biological film on the surface of the filler can rapidly fall off and is updated, so that the treatment efficiency of the whole system is greatly improved.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a three-dimensional biological turntable. Background technique [0002] The biological turntable is an aerobic biological treatment technology of the fixed film method. It is an artificial enhancement of sewage irrigation and land treatment. Growth and breeding, the formation of film-like biological sludge - biofilm. After primary treatment in the sedimentation tank, the sewage enters the biological turntable. The wastewater is treated in a semi-static state, while microorganisms grow on the low-speed rotating turntable. 40% of the turntable area is immersed in the wastewater. The microorganisms on the biofilm absorb organic pollutants in the sewage as nutrition, and use the oxygen in the air for respiration when the turntable rotates out of the water, and purify the sewage through aerobic degradation. [0003] Existing biological turntables generally use dis...

AI Technical Summary

Problems solved by technology

[0003] Existing biological turntables generally use discs with concave-convex surfaces, corrugated plates, and honeycomb plates as filler carriers to cultivate microorganisms. The specific surface area of ​​the filler is small, the thickness and concentration of the microbial film are limited, and the biological turntable is huge; due to the low-speed rotation of the turntable, The biofilm on the surface of the filler is not easy to fall off and renew, which reduces the processing efficiency of the equipment; at the same time, the thickness and concentration of the biofilm formed by the traditional biological turntable are low, and an anaerobic and anoxic environment cannot be formed obviously, and the effect of nitrogen and phosphorus removal is relatively low. Difference

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