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Counterflow biological aeration tank for processing domestic sewage

A technology of biological aeration and domestic sewage, applied in the direction of sustainable biological treatment, biological water/sewage treatment, fluid flow condition water treatment, etc., can solve the problems of short sewage process and low oxygen utilization rate, and save floor space , improve oxygen utilization, improve the effect of the process

Inactive Publication Date: 2016-06-15
CHENGDU XINZHU ZHUANBO ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a biological aeration tank for treating domestic sewage, which solves the problems of short sewage flow and low oxygen utilization rate in the existing aeration tank

Method used

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  • Counterflow biological aeration tank for processing domestic sewage

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Embodiment 1

[0013] A countercurrent biological aeration tank for treating domestic sewage, comprising an aeration tank 1, the aeration tank 1 is provided with a multi-layer partition 2, and one side of the partition 2 is closed with the side wall of the aeration tank 1 , the other side has a gap with the side wall of the aeration tank 1, and the gap formed by the adjacent partition 2 and the side wall of the aeration tank 1 is staggered to form a sewage channel, and the position of the side wall of the aeration tank 1 corresponding to the sewage channel is set The air intake direction of air pipe 5 and air intake pipe 5 is opposite to the running direction of sewage, sewage water inlet 3 is arranged at the bottom of aeration tank 1 , and sewage water outlet 4 is arranged at the top of aeration tank 1 .

[0014] In this embodiment, due to the multi-layer partitions 2, the flow of sewage in the aeration tank 1 is significantly increased, and the floor area can be significantly saved under th...

Embodiment 2

[0016] A countercurrent biological aeration tank for treating domestic sewage, comprising an aeration tank 1, the aeration tank 1 is provided with a multi-layer partition 2, and one side of the partition 2 is closed with the side wall of the aeration tank 1 , the other side has a gap with the side wall of the aeration tank 1, and the gap formed by the adjacent partition 2 and the side wall of the aeration tank 1 is staggered to form a sewage channel, and the position of the side wall of the aeration tank 1 corresponding to the sewage channel is set The air intake direction of the air pipe 5 and the air intake pipe 5 are opposite to the running direction of the sewage, the sewage water inlet 3 is arranged at the bottom of the aeration tank 1 , and the sewage water outlet 4 is arranged at the top of the aeration tank 1 . A large number of experiments have shown that there are at least three partitions, and the distance between adjacent partitions is 40-80 cm. In this case, a rela...

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Abstract

The invention discloses a counterflow biological aeration tank for processing domestic sewage.The counterflow biological aeration tank comprises an aeration tank body which is internally provided with a plurality of layers of partition plates; one side of each partition plate is closed to the side wall of the aeration tank body; gaps formed between the adjacent partition plates and the side wall of the aeration tank body are staggered, a sewage channel is formed, and the position, corresponding to the sewage channel, of the side wall of the aeration tank body is provided with an air inlet pipe; the air inlet direction of the air inlet pipe is opposite to the running direction of sewage; a sewage inlet is formed in the bottom of the aeration tank body; a sewage outlet is formed in the top of the aeration tank body.The partition plates which are sequentially alternated are arranged in the aeration tank body, sewage rises in the aeration tank body later by layer, the process of sewage in the aeration tank body is remarkably improved, the occupied area of the aeration tank body can be reduced under the condition of the same processing amount, because the air inlet pipe is opposite to the running direction of sewage, sewage and air can be mixed more uniformly and completely, and the oxygen utilizing rate is increased.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a countercurrent biological aeration tank for treating domestic sewage. Background technique [0002] For a long time, the secondary biological treatment of urban domestic sewage has mostly adopted the activated sludge process, which is the most widely used secondary biological treatment process in the world, with the advantages of high treatment capacity and good effluent quality. However, there are generally high infrastructure costs, high operating costs, high energy consumption, complicated management, problems such as sludge bulking and sludge floating, and the inability to remove nitrogen, phosphorus and other inorganic nutrients. For my country, a developing country with insufficient resources and a large population, it is not suitable for China's national conditions from the perspective of sustainable development. Since sewage treatment is a project that focus...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCC02F3/1278C02F2301/02Y02W10/10
Inventor 王小龙王仑李红美
Owner CHENGDU XINZHU ZHUANBO ENVIRONMENTAL PROTECTION TECH