Small modular integrated device for rural sewage treatment

Abstract

The invention discloses a small modular integrated device for rural sewage treatment. The device comprises a water inlet pipe, a biochemical reaction pool, a sedimentation pool, a rotating bracket, a water outlet pipe, aeration elements, packing elements, a sludge discharging channel and drive equipment, wherein the biochemical reaction pool and the sedimentation pool are arranged adjacent to each other and share the same pool wall, and a return sewage port and a water outlet are formed in the bottom of the same pool wall from bottom to top respectively; the driving equipment is in driving connection with a central rotating shaft of the rotating bracket, and the rotating bracket is erected on the biochemical reaction pool through the rotating shaft, the packing elements and the aeration elements parallel to the horizontal plane respectively are arranged uniformly on the rotating bracket from the inner ring to the outer ring sequentially; the water inlet pipe and the sludge discharging channel respectively communicate with the biochemical reaction pool, and the water outlet pipe communicates with the sedimentation pool. The device adopts advantages of a biofilm process, couples technologies of a biological rotating disc, activated sludge and mechanical aeration, occupies small area, operates efficiently and stably and is high in economic efficiency, simple in structure and convenient to operate and maintain.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, and is suitable for advanced treatment or tertiary treatment of domestic sewage or industrial wastewater, especially for rural domestic sewage treatment. Background technique [0002] With the rapid economic development and the acceleration of urban-rural integration, the living standards of the rural population are gradually improving, and the requirements for the quality of the living environment are getting higher and higher. However, the current situation is that the environmental pollution caused by rural domestic sewage is becoming more and more serious. On the one hand, rural sewage discharge is a point source pollution, basically there is no pipeline collection system, and it is common to discharge into nearby rivers; on the other hand, the rural population is scattered, the population density is low, the discharge point source is large, and the economic level is relatively low. ...

AI Technical Summary

Problems solved by technology

Generally speaking, the water quality of rural domestic sewage is relatively simple, the water quality fluctuates greatly, the water discharge is irregular, the concentration of domestic sewage is low, the water basically does not contain heavy metals and toxic and harmful substances, contains a certain amount of phosphorus and nitrogen, and is biodegradable. Emissions can cause environmental pollution

The conventional treatment process of general domestic sewage includes activated sludge method and biofilm method, but it has the disadvantages of large area, high investment cost and troublesome operation.

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