Aeration device in biological aerated filter

Abstract

The invention belongs to the field of sewage treatment, and discloses an aeration device in a biological aerated filter, the aeration device comprises an aeration unit, a water distribution unit and aflow guide dispersion unit, the water distribution unit comprises an upper water distribution hole and a lower water distribution hole, and an air distribution hole of the aeration unit is aligned with the lower water distribution hole of the water distribution unit; the flow guide dispersion unit is communicated with the upper water distribution hole of the water distribution unit; air enteringthe water distribution unit and sewage in the water distribution unit flow out of the upper water distribution hole of the water distribution unit together, and enter a flow guide channel of the flowguide dispersion unit until flowing out of the flow guide channel of the flow guide dispersion unit; the air is continuously cut and dispersed, and the energy difference drives a surrounding water body to continuously mix and stir the liquid, so that the transfer rate of oxygen in the air is increased, and the oxygen utilization rate is increased.

Description

technical field [0001] The disclosure belongs to the field of sewage treatment, and in particular relates to an aeration device in a biological aerated filter. Background technique [0002] In sewage treatment, in the process of treating impurities in sewage, biological aerated filter is often used as a treatment process. This process can effectively remove SS, COD, BOD, ammonia nitrogen, total phosphorus and other pollutants in water, and has been widely used in the advanced treatment of municipal sewage, industrial wastewater and drinking water. In the biological aerated filter, the tank is filled with granular fillers with high specific surface area to provide a carrier for the growth of microbial film, so as to achieve nitrogen and phosphorus removal through biological action. [0003] In the existing aeration method, since the air enters the equipment box through the aeration device, it cannot be cut by the water flow or the physical device, and the liquid cannot be fu...

AI Technical Summary

Problems solved by technology

[0003] In the existing aeration method, since the air enters the equipment box through the aeration device, it cannot be cut by the water flow or the physical device, and the liquid cannot be fully stirred

In this method, the gas-water mixing is not complete, the oxygen in the air cannot be effectively transferred to the liquid, the wastewater cannot be fully aerated, and the biochemical reaction is not complete.

Images