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Sludge thicking dewatering equipment

A dewatering device and sludge thickening technology, applied in dewatering/drying/concentrating sludge treatment, etc., can solve the problems of long residence time, large floor space, large investment, etc., and achieve the effect of reducing equipment cost and processing capacity.

Inactive Publication Date: 2004-02-25
张林
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  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: large area, long stay time, large investment
[0003] In the municipal sludge dewatering process, the concentration and dehydration of the sludge is generally to add the cationic polyacrylamide to the sludge first, and after the mixer is fully mixed, it is directly concentrated with a belt thickener or a centrifugal dehydrator, and then the belt press is used to concentrate the sludge. filter or centrifugal dehydrator without pre-concentration and dehydration device, and there is no pre-concentration and dehydration device in the sludge concentration and dehydration process in other industries

Method used

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  • Sludge thicking dewatering equipment
  • Sludge thicking dewatering equipment
  • Sludge thicking dewatering equipment

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Embodiment Construction

[0019] The working process that the present invention carries out concentration dehydration to sludge is as follows:

[0020] After dosing, the sludge that is completely mixed and has a certain flow rate enters the tank (5) under static pressure or pump pressure. Due to the sudden increase of the flow cross-sectional area, the flow rate will slow down sharply. Under the action of gravity, the specific gravity The lighter clear water will float up, and the sludge with heavier specific gravity will sink. Part of the sludge in the floating clean water will further settle into the sludge zone (17) in the thickening zone (3) behind the splitter plate (4), and part of the clear water in the sinking sludge will be concentrated in the thickening zone (3) behind the splitter plate (4). Zone (3) further ascends to Clearwater Zone (6). The diverter plate (4) has two functions: one, to improve the mud-water separation efficiency of the mud inlet; second, to reduce the interference of the...

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Abstract

The sludge concentration dehydration equipment is a box body formed from two water packing-off plates, two overflow plates, a spreader plate and a flow-streaming plate, the top of said box is equipped with removable sealing cover, and the bottom of said box body is equipped with a conical sludge hopper with discharge outlet, the inlet of sludge is set in the lower portion of one side of said box body the concentrated and separated sludge and clean water can be respectively overflowed out.

Description

technical field [0001] The invention relates to a sludge concentration and dehydration device, which can be used for concentration and dehydration of sludge in municipal wastewater treatment plants, coal washing in coal mines, food and pharmaceuticals, petrochemical industry, iron and steel metallurgy and other industries. Background technique [0002] In special equipment for water treatment (including special equipment for sludge thickening and dehydration), although there are many similar devices or equipment of the present invention, there is no similar device or equipment of the present invention. A similar device or device is a radial concentrator. Its disadvantages are: large area, long residence time, and large investment. The working process of the radial flow thickener is as follows: the material is pumped into the upper center of the radial flow thickener, and then gravity settles in the radial flow thickener, the separated clear water overflows from the surround...

Claims

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Application Information

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IPC IPC(8): C02F11/12
Inventor 张林
Owner 张林