Sludge sedimentation pipe device capable of freely adjusting sedimentation time and using method thereof

Abstract

The invention discloses a sludge sedimentation pipe device capable of freely adjusting sedimentation time and a using method thereof. The sedimentation pipe device comprises a sedimentation pipe mainbody, a water outlet on the side wall of the sedimentation pipe main body, a water inlet pipe capable of adjusting the water inlet height, and a mud discharge port at the lower part of the sedimentation pipe gradually changes from thick to thin according to a smooth curve. When an amount of deposited sludge is large, the height of the water inlet pipe is increased; when the amount of the sludge tobe precipitated is small, the height of the water inlet pipe is reduced. When the height of the water inlet pipe is adjusted, different sludge sedimentation time can be controlled by draining water from water outlets with different heights, sludge particles with a higher sedimentation speed are retained, the sludge with a poor sedimentation performance is discharged out of the sedimentation pipe,so that the sludge with a good sedimentation performance is obtained.One end of a sludge reflux pipeline is connected with the bottom of the sedimentation pipe, the other end of the sludge reflux pipeline is connected with a water treatment reactor, an inlet of a sludge discharge pipe is positioned at the bottom of the sedimentation pipe, and the sludge is refluxed to a anaerobic zone of a continuous flow reactor, so that the denitrification and dephosphorization effects of the reactor is guaranteed, and the water quality after sewage treatment is improved.

Description

Technical field: [0001] The invention is suitable for the field of sewage biological treatment, suitable for a continuous flow aerobic granular sludge reactor, and is an improvement of the sedimentation pipe structure for sludge treatment. Background technique: [0002] Aerobic granular sludge is a biological aggregate with compact structure, good sedimentation performance, and high degree of microbial diversity; due to the layered growth of microorganisms in aerobic granular sludge, aerobic and anoxic can exist simultaneously under aerobic conditions. , anaerobic microenvironment, has many advantages that cannot be compared with traditional activated sludge such as simultaneous denitrification and phosphorus removal under aerobic conditions, and is considered to be a promising wastewater biological treatment technology; aerobic granules that operate in a continuous flow mode The sludge process has the advantages of simple operation control, high volume load, and space savin...

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Problems solved by technology

[0002] Aerobic granular sludge is a biological aggregate with dense structure, good sedimentation performance, and high degree of microbial diversity; due to the layered growth of microorganisms in aerobic granular sludge, aerobic and anoxic can exist simultaneously under aerobic conditions. , anaerobic microenvironment, has many advantages that cannot be compared with traditional activated sludge such as simultaneous denitrification and phosphorus removal under aerobic conditions, and is considered to be a promising wastewater biological treatment technology; aerobic granules that operate in a continuous flow mode The sludge process has the advantages of simple operation control, high volume load, and space saving. However, the continuous flow operation lacks a sedimentation process, and it is difficult to screen the granular sludge with good sedimentation performance. It is difficult for the sludge to form particles in it during the start-up period. It is easy to affect the settling performance of granular sludge, so aerobic granular sludge is often successfully started in the SBR operation mode and then converted to continuous flow operation. The sedimentation area is very important in the continuous flow operation process

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