Grit chamber device

A technology of grit chamber and pool wall, which is applied in the direction of settling tank, sediment separation, and sediment separation by centrifugal force, etc. It can solve the problems of destroying the biochemical treatment process, affecting the operation of treatment equipment, and blocking the pipe network, etc., achieving simple maintenance, The effect of small footprint and safe operation

Inactive Publication Date: 2011-03-30
何建祺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the sand in the sewage is not pre-sedimented and separated, it will affect the operation of the subsequent treatment equipment
The most important thing is to wear the machine pump, block the pipe network, interfere or even destroy the biochemical treatment process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The bell-type sand settling equipment uses mechanical force to control the flow state and flow rate, accelerates the sedimentation of sand particles, and makes the organic matter be taken away with the water flow.

[0010] Flow rate of water inlet channel: 0.6-0.9m / s

[0011] Hydraulic surface load: 200m3 / m2·d

[0012] Dwell time: 20-30s

[0013] Sewage enters from the tangential direction of the grit chamber with a certain flow rate. The motor and transmission device are used to drive the turntable and slope blades to rotate. Under the action of centrifugal force, centrifugal force is generated on the sand particles, so that the heavier sand particles are thrown to the pool wall. Falling into the sand hopper, while preventing the fine sand particles from sinking, the organic matter is left in the sewage.

[0014] Adjust the speed, provide good conditions for the discharge of grit through the advanced air lifting system, and directly transport the grit to the sand-wat...

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PUM

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Abstract

The invention discloses a grit chamber device, which belongs to the technical field of environmental protection and relates to a silt sedimentation technique in hydraulic engineering. The invention provides a clock-type grit chamber, which can solve the problem of silt sedimentation in the conventional river channel well. In the grit chamber device, the flow velocity and the flow state of the intake water flow are controlled, so that sand particles are accelerated to be sedimented spirally along the wall of the grit chamber under the action of a centrifugal force and gravity; organic matters drift away along with the water flow under the action of the water flow; the sand sunk to the bottom of the grit chamber is lifted by air; and the sand and a little sewage enter a sand-water separator to be separated and discharged; and cleaning water reflows to a grating well, so that the aim of removing sand is fulfilled.

Description

Technical field: [0001] The invention belongs to the technical field of environmental protection and relates to sedimentation technology in water conservancy projects Background technique: [0002] The grit chamber is generally a mud-water separation facility before the biochemical structure of the sewage treatment plant. The separated sediments are mostly sand with larger particles, the sediments have a larger proportion, higher inorganic components, and lower water content. Sewage will inevitably be mixed with mud and sand in the process of migration, flow and collection. If the sand in the sewage is not pre-sedimented and separated, it will affect the operation of the subsequent treatment equipment. The most important thing is to wear the machine pump, block the pipe network, interfere or even destroy the biochemical treatment process. [0003] Sedimentation tanks are generally structures for the separation of mud and water before or after biochemical treatment, and mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/02B01D21/26B01D21/34
Inventor 何建祺
Owner 何建祺
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