Biological aerated filter

An aerated biological filter and aeration tube technology, which are applied in sustainable biological treatment, aerobic process treatment and other directions, can solve the problems of polluting the environmental water environment, aggravating the shortage of water resources, etc., and achieve high biomass and maintain high activity. , the effect of short residence time

Inactive Publication Date: 2017-05-10
DUJIANGYAN EMPRESS TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

A large amount of sewage is discharged without treatment or without effective treatment. As a result, on the one hand, it pollutes the environment, especially the water environment, and on the other hand, it exacerbates the shortage of water resources.

Method used

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  • Biological aerated filter

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Embodiment Construction

[0006] The present invention will be further described below in conjunction with the accompanying drawings.

[0007] The bottom is a steam-water mixing chamber, and the top is a long handle filter head 3, an aeration pipe, a cushion layer 2, and a filter material 1. The filter material used is denser than water and accumulates naturally. The aeration tank generally adopts upward flow during operation, and the sewage enters the air-water mixing chamber from the bottom, and then enters the filter material through the cushion layer after being distributed by the long-handled filter head, where BOD, COD, ammonia nitrogen, and SS are removed. During backwashing, air and water enter the air-water mixing chamber at the same time, and then enter the filter material after being distributed by the long-handled filter head, and the backwashed water flows back into the primary sedimentation tank for combined treatment with the raw sewage. The main reasons for adopting upward flow (air-wa...

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Abstract

The invention relates to a biological aerated filter. According to the technical scheme, the bottom of the biological aerated filter is an air-water mixing chamber, and a long-handle filter head, an aerator pipe, a cushion layer and a filter material are arranged on the air-water mixing chamber. The biological aerated filter is characterized in that the density of the filter material is greater than that of water, and the filter material is stacked naturally; during running of the biological aerated filter, upward flow is adopted, sewage enters the air-water mixing chamber from the bottom, after water is distributed through the long-handle filter head, the water enters the filter material through the cushion layer, and then, BOD, COD, ammonia nitrogen and SS are removed through the filter material; and during back washing, air and water simultaneously enter the air-water mixing chamber, the water and the air are distributed via the long-handle filter head, and then enter the filter material, and back washing water returns to a primary settling tank and is merged with raw sewage. The biological aerated filter has the advantages that the occupied area is small, and the investment of capital construction is saved. A secondary settling tank is not arranged at the rear of the biological aerated filter, and therefore, occupation of land and investment of the secondary settling tank can be saved.

Description

technical field [0001] The invention relates to an aerated biological filter. Background technique [0002] my country is a country that lacks water resources. In recent years, the phenomenon of water shortage in many areas has gradually aggravated. At the same time, the discharge of sewage (waste) water in my country is increasing year by year. Taking 1997 as an example, the total discharge of sewage (waste) water was 41.6 billion m 3 , The discharge of chemical oxygen demand (CODCr) in sewage is 17.57 million tons, while the centralized treatment rate is only about 10%. A large amount of sewage is discharged without treatment or without effective treatment. As a result, on the one hand, it pollutes the environment, especially the water environment, and on the other hand, it exacerbates the shortage of water resources. It can be said that capital and technology have become the two main factors restricting my country's sewage treatment. Therefore, it is very necessary to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02
CPCY02W10/10
Inventor 吴强
Owner DUJIANGYAN EMPRESS TECH CO LTD
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