Non-blocking aeration biological filter

Abstract

A biological filter of aeration free of clogging consists of a tank, a device for packing, a device for preparing water and gas, the aeration, recoil air lines and so forth. The said device for preparing water and gas comprises an array of arch tubes formed by some arch tubes fixed at the bottom of the tank, an air blowing slit at the top of both sides, an inlet opening at the bottom and an air exit eyelet on the top of the arch tube; an automatic flap drainage pump is fixed on the wall of the tank, a distribution channel is set at the bottom of the tank, a main recoil air line is fixed in the distribution channel, some inlet branches are connected to the main air line, every inlet branch is extended to the groove at the bottom of its corresponding arch tube, and an automatic valve is set on the blowdown pipe at the bottom of the tank, said valve controlling evacuation at the beginning of backwash. Said biological filter of aeration free of clogging solves the problem of frequent clogging happened in conventional biological filter of aeration through the device for preparing water and gas with an array of arch tubes and the means of evacuation and the problem of pack leaking at the time of recoiling through the flap drainage pump.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a non-clogging aerated biological filter which introduces a new type of water distribution device and backwashing drainage equipment. Background technique [0002] Biological treatment technology is the main process of organic sewage treatment. It has the advantages of good sewage treatment effect, high organic matter removal rate, stable operation, and low operating cost. It is currently a sewage treatment process commonly used in various countries. [0003] Sewage biological treatment technology is mainly divided into two categories: activated sludge method and biofilm method. The activated sludge method is an artificial enhancement of self-purification of the water body. It is to make the microbial population "cluster" on the activated sludge. The aeration tank is in a suspended state and is in extensive contact with sewage to purify sewage; biofilm method is an artificial enha...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the technical deficiencies in the existing biological aerated filter, such as the low-resistance water distribution system composed of long-handled filter heads and filter plates, which is prone to blockage and easy to cause filler loss during recoil drainage, and to provide a The non-clogging biological aerated filter with resistance arched pipe water distribution and flap valve drainage replaces the filter plate of the small resistance filter head, saves the grid-shaped baffle, and solves the above two common problems of the biological aerated filter. question

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