Novel automatic-reflux biological sewage processor

Abstract

The invention discloses a novel automatic-reflux biological sewage processor. A column body is arranged at The upper part of the processor is a cylindrical body and the lower part of the processor is a trapezoid body. The novel automatic-reflux biological sewage processor mainly comprises an aeration zone, inclined pipe settling zones and an automatic reflux zone, wherein the inclined pipe settling zones are symmetrically arranged at the left end and the right end of a reaction tank; a rotary mixing aeration device is arranged at the bottom of the aeration zone, and a water inlet pipe is arranged at the middle part of the aeration zone; inclined pipe packings are filled inside the reaction tank; the settling zones are communicated with a water collecting tank through overfall gaps; the automatic reflux zone is arranged between the inclined pipe settling zones and the aeration zone; three folded plates are arranged inside the reflux zone; a sludge reflux inlet is preserved in the upper end of a second folded plate, and a sludge reflux gap is formed between the inclined bottom surface of the tank and the lower end of the second folded plate; and a sludge outlet and a sludge flow stirring device are arranged at the two bottom ends of the tank. The novel automatic-reflux biological sewage processor is simple in structure, convenient to manage, stable in running, high in resistance to impact load, high in processing efficiency, small in floor area, and widely applied to large, medium and small sewage treatment projects.

Description

technical field [0001] The invention belongs to the technical field of environmental protection sewage treatment, and in particular relates to sewage treatment equipment using sludge automatic backflow type aeration and sedimentation integrated biological method. Background technique [0002] At present, the development of industrial and agricultural production and the improvement of people's living standards produce a large amount of production and domestic wastewater, which not only pollutes our living environment, but also causes a great waste of resources. For decades, people have accumulated a large amount of waste water in sewage treatment. Based on practical experience, some efficient sewage treatment methods have also been developed. The activated sludge method is currently the most widely used secondary biochemical sewage treatment method in the world. It is widely used in urban sewage treatment and wastewater treatment systems where the treatment object is organic ...

AI Technical Summary

Problems solved by technology

However, the structure of this method is relatively simple. After actual operation, it is found that there are certain deficiencies: first, the sedimentation effect of the sludge in the sedimentation zone by natural settlement is unstable, and the SS of the effluent fluctuates greatly; second, the sedimentation process in the sedimentation zone is affected by the aeration zone. The impact of water flow disturbance is relatively large, and the phenomenon of sludge upturning is serious; the third is that the aeration condition in the aeration zone is unstable, and the negative pressure formed by the natural circulation of water flow is insufficient, and the short-flow phenomenon often occurs when the sludge returns; the fourth is the impact resistance of the reaction tank Not strong, it is difficult to fully mix sewage and return sludge in a short time, when the influent water quality and quantity fluctuate greatly, the effluent water quality is unstable

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