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Shallow sedimentation tank system

A sedimentation tank and shallow layer technology, applied in the direction of the sedimentation tank, the feeding/discharging device of the sedimentation tank, etc., can solve the problems of large amount of earthwork excavation, high foundation requirements, and high construction cost, reducing consumables and facilitating engineering. Effect of installation, depth reduction

Inactive Publication Date: 2012-04-11
GUANGDONG HUIZHONG WATER TREATMENT EQUIP CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Therefore, the existing sedimentation tanks generally have a depth of more than 4 to 6 meters. The excavation volume is large, the consumables are large, and the foundation requirements are high, so the construction costs are high.

Method used

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Embodiment Construction

[0023] In order to illustrate the content of the present invention more clearly, further description will be made below in conjunction with the accompanying drawings and specific embodiments:

[0024] For vertical flow sedimentation tanks, the movement of particles in water is mainly formed by the combined effects of gravity, buoyancy and hydrodynamic effects. To achieve settlement, gravity must be greater than the combined effects of buoyancy and hydrodynamic forces, that is, the falling speed of separated solids is greater than the rising speed of water flow. If the speed is high, solids can sink. If the water flow speed is higher, the hydrodynamic effect on the particles will be greater, and the particles will be difficult to settle. Therefore, it is necessary to reduce the water flow speed as much as possible to facilitate the sedimentation of the particles.

[0025] Such as figure 1 As shown, the existing vertical flow sedimentation tank adopts the water distribution meth...

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Abstract

The invention discloses a shallow sedimentation tank system, relates to a water treatment sedimentation tank system, and in particular relates to a vertical sedimentation tank system. The shallow sedimentation tank system comprises a sedimentation tank, a vertical post arranged in the center of the sedimentation tank, an inlet branch, a drainage channel, a scraper, a sludge collecting trough and a sludge sucking pipe, wherein the lower part of the vertical post is provided with 1-8 flooding water distribution pipes, and the flooding water distribution pipes and the inlet branch form a flooding water distribution diversion system; the flooding water distribution pipes are parallel to the horizontal plane, and provided with a plurality of water distribution holes; and the sludge collection trough is arranged below the water distribution pipes, the scraper and the sludge collecting trough are communicated with the sludge sucking pipe, and the sludge collecting trough and the sludge sucking pipe form a sludge extraction system. The shallow sedimentation tank system disclosed in the invention has a stable layer bottom, so that wastewater can be kept at a relative static state, and facilitates sedimentation of suspended matters; the depth of the sedimentation tank can be reduced by about 1.5m, thus remarkably reducing the earth excavation volume of the sedimentation tank; and meanwhile, since the depth of the sedimentation tank is lowered, the material consumption reduction is facilitated, project installation is convenient, and fabrication cost and operation cost are reduced.

Description

technical field [0001] The invention relates to a water treatment sedimentation tank system, in particular to a vertical flow sedimentation tank system. Background technique [0002] Suspended substances in sewage can be removed by sedimentation by gravity. This physical process is simple and easy, and it is one of the important technologies for sewage treatment. The traditional sedimentation tank adopts the method of entering water at the center of the bottom of the tank and leaving water around the top of the tank. The water body has horizontal and vertical flows. The water body in the sedimentation tank is in a state of motion, which leads to an increase in the synthesis rate of suspended particles, which is not conducive to suspended solids. Stable downward sedimentation along the vertical direction, the sedimentation efficiency is low. Due to the simultaneous existence of the horizontal component velocity and the vertical component velocity, in order to settle the susp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/04B01D21/24
Inventor 李赋区岳洲
Owner GUANGDONG HUIZHONG WATER TREATMENT EQUIP CO LTD
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