Air lift and return integrated sewage treatment device

Abstract

The invention discloses an air lift and return integrated sewage treatment device, which comprises an anaerobic reaction chamber, an air lift chamber and an aerobic reaction chamber which are parallelly arranged; the bottom of the anaerobic reaction chamber is provided with a sewage inlet, while the top is provided with a water outlet communicated with a water inlet on the bottom of the aerobic reaction chamber; the bottom of the aerobic reaction chamber is provided with an aeration device, while the top is provided with a water outlet; the upper part of the aerobic reaction chamber is provided with a three-phase separation area; the top of an air chamber of the three-phase separation area is provided with an air duct which is inserted to the bottom of the air lift chamber; the upper partof the three-phase separation area is provided with a water outlet hole communicated with the air lift chamber; the water outlet on the top of the air lift chamber is communicated with the anaerobic reaction chamber; and a guide plate is arranged close to the air lift chamber to guide return water of the air lift chamber to the lower part of the anaerobic reaction chamber. The air lift and returnintegrated sewage treatment device can realize the removal of organic matters in domestic sewage and biological nitrogen removal under the condition of relative high load to ensure that main water quality indexes except total phosphorus in the yielding water meet high requirement of emission standard, and has low energy consumption in operation.

Description

technical field [0001] The invention relates to a water treatment device, in particular to an air-lift-reflux integrated sewage treatment device, which belongs to the field of environmental protection sewage treatment. Background technique [0002] People will inevitably discharge domestic sewage such as toilet water, laundry water, and bath water in daily life. With the improvement of living standards, the amount of water used by people in daily life is also increasing significantly, and if these domestic sewage are discharged directly without treatment, it will pollute the water quality, causing red algae and aquatic organisms in lakes, coastal areas, The reduction of plants, the pollution of the environment and the destruction of ecological balance. According to reports, domestic sewage accounts for more than 60% of the polluted water. Therefore, the main task of controlling water pollution is to treat domestic sewage. [0003] At present, the existing domestic sewage t...

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Problems solved by technology

[0008] The purpose of the present invention is to provide an air-lift and backflow integrated sewage treatment device to solve the problem of domestic sewage treatment

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