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A sewage treatment system

A technology of sewage treatment system and air flotation tank, which is applied in water/sewage treatment, multi-stage water/sewage treatment, flotation water/sewage treatment, etc. It can solve the problems of difficult control of dissolved air tanks and achieve a stable removal rate of flocs , simple control and stable floc content

Active Publication Date: 2021-10-12
广东拓致环境科技有限公司
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the problem that the control of the dissolved gas tank is relatively difficult

Method used

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  • A sewage treatment system
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Embodiment Construction

[0019] The invention will be described in detail below in conjunction with specific embodiments.

[0020] Such as Figure 1~Figure 2 , is an embodiment of the sewage treatment system of the present invention, specifically:

[0021] A sewage treatment system, comprising a main air flotation tank 1, an auxiliary air flotation tank 2, an anaerobic fermentation tank 3, an aerobic fermentation tank 4 and a sedimentation tank 5 connected in sequence, and also includes a main air-dissolving tank 6 and an auxiliary air-dissolving tank 7, The main air flotation tank 1 is communicated with the main air flotation tank 6, and the auxiliary air flotation tank 2 is communicated with the auxiliary air flotation tank 7. The gas volume is mainly 5-35% of the dissolved gas capacity of the dissolved gas tank 6.

[0022] After the flocculant is added to the sewage, most of the flocs produced can float to the surface of the main air flotation tank 1. In the prior art, the flocculations floating ...

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Abstract

The invention provides a sewage treatment system, which includes a main air flotation tank, an auxiliary air flotation tank, an anaerobic fermentation tank, an aerobic fermentation tank and a sedimentation tank connected in sequence, and also includes a main dissolved air tank and an auxiliary dissolved air tank. The floating tank and the secondary air flotation tank are respectively communicated with the main dissolved air tank and the secondary dissolved air tank, the volume of the secondary air flotation tank is 10-35% of the volume of the main air flotation tank, and the secondary dissolved air tank The dissolved air capacity of the tank is 5-35% of the dissolved air capacity of the main dissolved air tank. The advantage of the present invention is that the content of flocs in the discharged sewage can be guaranteed to be relatively stable without constantly controlling the power of the main air-dissolving tank and the auxiliary air-dissolving tank. And, in the present invention, the equipment investment of auxiliary air flotation tank and auxiliary dissolving tank is not large. The control of the main air-dissolving tank and the auxiliary air-dissolving tank is simple, the operating load of the air-dissolving tank is stable, and the removal rate of flocs is stable.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a sewage treatment system. Background technique [0002] The Chinese patent application with the publication number CN112047583A discloses a process for treating sewage in slaughterhouses. After the slaughter wastewater passes through the coarse grid well, the waste water treated by the grease trap enters the fine grid well, and the effluent enters the regulating tank, and the effluent is lifted by the pump. Enter the air flotation machine, reduce COD, remove suspended solids and oil slicks by adding flocculation agents; the effluent of the air flotation machine enters the adjustment and hydrolysis tank, and the effluent of the adjustment and hydrolysis tank enters the subsequent anoxic pool; the effluent of the anoxic pool enters the good Oxygen tank, under aerated conditions, uses aerobic microorganisms to decompose organic matter in wastewater into CO 2 and water; after two-st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F1/24
CPCC02F1/24C02F1/40C02F1/52C02F2201/002
Inventor 梁汝广陈大瑜李春清
Owner 广东拓致环境科技有限公司
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