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Method for drying silt or sludge

A sludge drying and sludge technology, which is applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of not reaching the mud content rate of the sludge, achieve the improvement of the mud content rate, reduce the project cost, and have a good drying effect Effect

Active Publication Date: 2015-06-03
江苏江达生态环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its shortcomings are also obvious. The existing vacuum preloading adopts the upper row type for drainage. In the process of drainage, gravity and the resistance of filter cloth and drainage channels to water must be overcome, and the effect will be reduced after drying to a certain degree in the later stage. It tends to stop, and it often does not reach the mud content rate of silt above 75% and the mud content rate of sludge above 55%.

Method used

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  • Method for drying silt or sludge

Examples

Experimental program
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Effect test

Embodiment 1

[0018] One end of the drainage board 1 is connected to the vacuum pipe network 2, and the other end exposes the silt surface.

[0019] In this embodiment, the volume of the drying pool is 10m 3 , the specific steps are as follows:

[0020] (1) Pre-treatment: transport the sludge or sludge to be treated to the drying tank for preliminary precipitation;

[0021] (2) Setting of drainage boards: Insert several drainage boards in the silt or sludge obtained in step (1). A drainage channel is formed between the water-permeable layer and the drainage groove; the end of the drainage groove has a through first port and a second port; when the drainage board is inserted, the drainage groove is located in the silt or sludge, and the end of the drainage groove The first port and the second port protrude from the sludge or the surface of the sludge; and the first port or / and the second port are connected with a vacuum pipe network.

[0022] The vacuum pipe network includes a first vacuu...

Embodiment 2

[0030] One end of the drainage board 1 is connected with the vacuum pipe network 2, and the other end is connected with the vacuum pipe network 3, and the connected vacuum pipe network 3 communicates with nature.

[0031] In this embodiment, the volume of the drying pool is 10m 3 , the specific steps are as follows:

[0032] (1) Pre-treatment: transport the sludge or sludge to be treated to the drying tank for preliminary precipitation;

[0033] (2) Setting of drainage boards: Insert several drainage boards in the silt or sludge obtained in step (1). A drainage channel is formed between the water-permeable layer and the drainage groove; the end of the drainage groove has a through first port and a second port; when the drainage board is inserted, the drainage groove is located in the silt or sludge, and the end of the drainage groove The first port and the second port protrude from the sludge or the surface of the sludge; and the first port or / and the second port are connect...

Embodiment 3

[0043] One end of the drainage board 1 is connected to a vacuum pipe network 2 , and the other end is connected to a vacuum pipe network 3 , and the connected vacuum pipe network 3 is connected to an air heating device 4 .

[0044] In this embodiment, the volume of the drying pool is 10m 3 , the specific steps are as follows:

[0045] (1) Pre-treatment: transport the sludge or sludge to be treated to the drying tank for preliminary precipitation;

[0046] (2) Setting of drainage boards: Insert several drainage boards in the silt or sludge obtained in step (1). A drainage channel is formed between the water-permeable layer and the drainage groove; the end of the drainage groove has a through first port and a second port; when the drainage board is inserted, the drainage groove is located in the silt or sludge, and the end of the drainage groove The first port and the second port protrude from the sludge or the surface of the sludge; and the first port or / and the second port a...

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Abstract

The invention relates to a method for drying silt or sludge, particularly relates to a drying treatment method for slit or sludge in rivers and lakes, and belongs to the technical field of drying treatment. A drainage plate is inserted into the slit or sludge, and then moisture in the slit / sludge is eliminated by a vacuum preloading technology; finally, dry air or heated air is introduced into the other end of the drainage plate; the vacuum pump is utilized sequentially to carry out pumping treatment; flowing of air in a soil body is accelerated. The method is simple to operate, moderate in price, and good in silt or sludge drying effect.

Description

technical field [0001] The invention relates to a high-efficiency sludge / sludge drying method, in particular to a river and lake sludge / sludge drying treatment method, which belongs to the technical field of drying treatment. Background technique [0002] Vacuum preloading technology is a technology widely used in sludge / sludge drying in my country in recent years. Vacuum preloading is to insert a plastic drainage board vertically in the sludge / sludge, connect the drainage board to the vacuum pipe network with a hand joint at the top, lay woven cloth and geotextile on the mud surface, and then seal it with an airtight sealing film. Make it a closed area, and then use the vacuum system to pump out the air and water fluids in the closed area, so that a certain pressure difference will be generated inside and outside the sealing film. This pressure difference is the external load applied to the surface of the sludge / sludge. Sludge / sludge As the pressure difference increases an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/12
Inventor 缪卫良
Owner 江苏江达生态环境科技有限公司
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