A kind of forced discharge trickling filter biological bed and its treatment process for sewage

Abstract

Belonging to the technical field of sewage treatment, the invention provides a forced drainage type trickling filtration biological bed and a sewage treatment process. The biological bed comprises a vertically arranged sewage cylinder, a water distributor is connected to the upper part of the sewage cylinder, the bottom is provided with a water outlet pipe, the lower side wall of the sewage cylinder is provided with vents, a biological filler area is arranged between the vents and the water distributor, the upper layer and the lower layer of the biological filler area are both aerobic zones, the middle layer of the biological filler area is an anaerobic zone, the top of the sewage cylinder is provided with a ventilation device, the ventilation device enables the formation of an air duct in the shape of a Chinese character "eight", so that sewage can form reciprocating oscillation and cycle aeration in the aerobic zone and anaerobic zone. The biological bed increases the contact surface and time of sewage and microorganisms, pollutants are adsorbed and degraded, the effluent water quality is good, and the removal rate of ammonia nitrogen and phosphorus is high.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a forced discharge type trickling filter biological bed and a sewage treatment process. Background technique [0002] The existing biological bed for sewage treatment fails to meet the expected expectations under the high standard treatment requirements such as some specific environmental treatment or indoor sewage treatment. In order to maximize the purification and treatment of sewage, most of them use filter layers and aeration The method realizes, will increase the volume of device like this, is not easy to lay. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned existing problems, and provide a kind of forced discharge trickling filter biological bed with reasonable layout of anaerobic and aerobic reactions, which can circulate aeration and reduce the volume of the device. [0004] The purpose of the ...

AI Technical Summary

Problems solved by technology

[0002] The existing biological bed for sewage treatment fails to meet the expected expectations under the high standard treatment requirements such as some specific environmental treatment or indoor sewage treatment. In order to maximize the purification and treatment of sewage, most of them use filter layers and aeration method to achieve, this will increase the volume of the device, it is not easy to place

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