Precipitation device for preventing anaerobic fermentation of sludge and sewage treatment system

The technology of sludge anaerobic fermentation and sedimentation device is applied in the field of sewage treatment system and sedimentation device to prevent sludge anaerobic fermentation, so as to achieve the effects of balanced water flow rate, improved sedimentation efficiency and prevention of short flow.

Active Publication Date: 2021-01-29
北京华宇辉煌生态环保科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the objectives of the present invention is to propose a sedimentation device and sewage treatment system for preventing anaerobic fermentation of sludge, which solves the technical problem of anaerobic metabolism due to sludge deposition in the prior art

Method used

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  • Precipitation device for preventing anaerobic fermentation of sludge and sewage treatment system
  • Precipitation device for preventing anaerobic fermentation of sludge and sewage treatment system
  • Precipitation device for preventing anaerobic fermentation of sludge and sewage treatment system

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Embodiment 1

[0036] This embodiment is attached in conjunction with the instructions Figure 1~3 The sedimentation device for preventing anaerobic fermentation of sludge of the present invention will be described in detail.

[0037] The present embodiment prevents the settling device of sludge anaerobic fermentation, comprises casing 1, the aerobic pond 2 that is positioned at casing 1 and the settling pond 3 that is positioned at aerobic pond 2, as Figure 1~3 shown. Preferably, the bottom wall of the sedimentation tank 3 is a curved surface structure, and the bottom of the sedimentation tank 3 is gradually reduced in size from the end far away from the bottom of the aerobic tank 2 to the end near the bottom of the aerobic tank 2, as figure 2 or 3. More preferably, the bottom wall of the sedimentation tank 3 is a smooth curved surface. More preferably, the bottom of the sedimentation tank 3 is a cone-shaped structure or a wine glass-shaped structure, such as figure 2 or 3. Preferab...

Embodiment 2

[0058] This embodiment describes in detail the flow of sewage treatment using any one of the technical solutions in embodiment 1 to prevent sludge anaerobic fermentation of the sedimentation device.

[0059] Utilize any technical scheme in embodiment 1 to prevent the sedimentation device of sludge anaerobic fermentation from carrying out the flow process of sewage treatment and comprise the steps:

[0060] S1: The sewage to be treated enters the aerobic tank 2, where organic matter degradation, nitrification and phosphorus absorption occur, and oxygen is provided to the aerobic tank 2 through the aeration pipe 19 and the aeration fitting 20.

[0061] S2: The sewage to be treated after organic matter degradation, nitrification and phosphorus absorption in the aerobic pool 2 enters the water inlet channel 9, and the sewage to be treated in the water inlet channel 9 passes through the trapezoidal water diversion member 10 and the porous water inlet plate 11 Enter the water intake...

Embodiment 3

[0068] This embodiment describes the sewage treatment system of the present invention in detail.

[0069] The sewage treatment system of this embodiment includes a sedimentation device for preventing anaerobic fermentation of sludge according to any one of the technical solutions in Embodiment 1. The sewage treatment system of this embodiment, compared with the sewage treatment system in the prior art, the sludge at the bottom of the sedimentation tank 3 will not be deposited to cause the problem of anaerobic fermentation. The mud pipe 5 is not easy to block and has the advantages of good water quality.

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Abstract

The invention discloses a precipitation device for preventing anaerobic fermentation of sludge and a sewage treatment system, belongs to the technical field of sewage treatment, and aims to solve theproblem of anaerobic metabolism caused by sludge deposition in the prior art. The precipitation device comprises a shell, an aerobic tank located in the shell and a sedimentation tank located in the aerobic tank; the bottom wall surface of the sedimentation tank is of a curved surface structure; the size of the bottom of the sedimentation tank is gradually reduced from the end away from the bottomof the aerobic tank to the end close to the bottom of the aerobic tank; the bottom of the sedimentation tank is located above the bottom of the aerobic tank; a gas stripping device is arranged belowthe sedimentation tank; the gas stripping device is communicated with the bottom of the sedimentation tank; the concentrated sludge settled to the bottom of the sedimentation tank flows back to the aerobic tank through the gas stripping device. On one hand, the device is beneficial to sliding of the settled sludge in the sedimentation tank, and anaerobic fermentation caused by sludge deposition can be avoided; on the other hand, the sludge at the bottom of the sedimentation tank can be quickly transferred and circularly flows, and anaerobic fermentation caused by sludge deposition is further avoided.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sedimentation device for preventing anaerobic fermentation of sludge and a sewage treatment system comprising the sedimentation device. Background technique [0002] Sedimentation tanks are widely used in sewage treatment systems. They are common process equipment for solid-liquid separation. They are used to separate suspended solids to clarify sewage mixed liquid, and to concentrate and return activated sludge at the same time. Specifically, the sewage mixture after purification by activated sludge enters the sedimentation tank, the activated sludge and other solid substances suspended in the mixture settle in the sedimentation tank and are separated from the water, and the clarified sewage is discharged into the system as treated water. The sedimented and concentrated sludge is discharged from the bottom of the sedimentation tank, and most of it is returned to the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCC02F3/1215C02F2203/006C02F2301/046C02F2303/14Y02W10/10
Inventor 张敬宇杨毅明董兴隆唐陆合谷秋磊
Owner 北京华宇辉煌生态环保科技股份有限公司
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