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Layer-by-layer electroosmosis method and device for dewatering energy-containing sludge

A technology of sludge dehydration and electroosmosis, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems that the moisture content of sludge cannot be very balanced, affect the effect of electroosmosis, and the operation process is complicated, etc., to achieve favorable Promote, improve production efficiency, save the effect of crushing device

Inactive Publication Date: 2014-11-26
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technical solutions have the following deficiencies: (1) due to the crushing and stirring link, the operation process is complicated; (2) the anode side sludge with a very low moisture content is mixed with other sludge before electroosmosis, which reduces the production efficiency (3) The moisture content of the sludge after crushing and stirring may not be very balanced, and there may be some lumpy sludge with a low moisture content, which will affect the effect of the next round of electroosmosis

Method used

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  • Layer-by-layer electroosmosis method and device for dewatering energy-containing sludge
  • Layer-by-layer electroosmosis method and device for dewatering energy-containing sludge
  • Layer-by-layer electroosmosis method and device for dewatering energy-containing sludge

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] As an embodiment of the electroosmotic method of energetic sludge dewatering described in the present invention, such as figure 1 , figure 2 and image 3 As shown, it includes an anode 1, a cathode 2, a sludge tank 3, a scraper 4 and four columns 5, and the columns 5 are arranged around the sludge tank 3, and the anode 1 is arranged above the sludge tank 3, And the column 5 passes through the anode 1, the anode 1 moves up and down along the column 5, the cathode 2 is arranged on the bottom surface of the sludge tank 3, and the cathode 2 is provided with a water seepage hole 6. One side of the sludge tank 3 is provided with a sludge feed port 21, and the other side is provided with a support column 7, and the support column 7 is provided with a scraper feeding device, and the scraper 4 is arranged on the on the scraper feeder.

[0035] In this embodiment, the scraper feeding device includes a rack 8, a gear 9 and a first motor 10, the rack 8 is arranged on the support ...

Embodiment 2

[0049] As an embodiment of the electroosmotic method for dewatering energetic sludge in the present invention, the difference from Embodiment 1 is that in this embodiment, the diameter of the seepage holes 6 is 3 millimeters, and the hole distance is 10 millimeters; The anode 1 moves down to the upper surface of the sludge 20 to perform electroosmosis on the sludge 20. The initial voltage setting value of the electroosmosis is 40 volts. As the electroosmosis proceeds, the current decreases continuously. When the current is reduced to 10% of the initial current, the electroosmosis is stopped, and the electroosmosis takes 5 minutes, and the upper layer of the sludge 20 becomes dry and cracked, and the water content decreases; The scraper 4 is moved to 20 mm below the upper surface of the sludge 20, and the scraper 4 is moved to scrape off a layer of sludge 20 close to the anode, and the moisture content of the treated sludge 20 is reduced from higher than 80% to about 50% %.

...

Embodiment 3

[0052] As an embodiment of the electroosmotic method for dewatering energetic sludge in the present invention, the difference from Embodiment 1 is that in this embodiment, the diameter of the seepage holes 6 is 5 mm, and the hole distance is 20 mm; The anode 1 moves down to the upper surface of the sludge 20 to perform electroosmosis on the sludge 20. The initial voltage setting value of the electroosmosis is 20 volts. As the electroosmosis proceeds, the current decreases continuously. When the current is reduced to 10% of the initial current, the electroosmosis is stopped. The electroosmosis takes 10 minutes, and the upper layer of the sludge 20 becomes dry and cracked, and the water content decreases; The scraper 4 is moved to 100 mm below the upper surface of the sludge 20, and the scraper 4 is moved to scrape off a layer of sludge 20 close to the anode, and the moisture content of the treated sludge 20 is reduced from higher than 80% to about 70% %.

[0053] In this embod...

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Abstract

The invention discloses an electroosmosis device, comprising an anode, a cathode, a sludge tank, a scraper and a plurality of upright posts, wherein the upright posts are arranged around the sludge tank; the anode is arranged above the sludge tank; the upright posts pass through the anode; the anode moves up and down along the upright posts; the cathode is arranged on the bottom surface of the sludge tank; water seepage holes are formed in the cathode; a sludge feeding hole is formed in one side of the sludge tank; a support post is arranged on the other side of the sludge tank and is provided with a scraper feed device; and the scraper is arranged on the scraper feed device. The electroosmosis method comprises the following steps: (1) enabling the anode to move down to the upper surface of the sludge and carrying out electroosmosis on the sludge; and (2) descending the scraper to 20-100mm below the upper surface of the sludge, moving the scraper to remove a layer of sludge close to the anode, and repeating the steps (1) and (2) until the sludge is removed layer by layer.

Description

technical field [0001] The invention relates to the technical field of a treatment method for dewatering energetic sludge and a device for realizing the method, in particular to a layer-by-layer electroosmosis method and device for dewatering energetic sludge. Background technique [0002] Energetic sludge refers to the solid precipitated matter with a certain calorific value produced in the sewage treatment process. According to the source of sewage, it can be divided into municipal sludge, pipe network sludge and industrial sludge, among which municipal sludge is the largest Types mainly come from municipal sewage treatment plants, while industrial sludge mainly comes from self-owned sewage treatment plants of chemical, printing and dyeing enterprises. Although the components of municipal sludge and industrial sludge are not exactly the same, they both contain certain biological Energy, through combustion can release a certain amount of heat, collectively referred to as en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 曹泰斌
Owner JIAXING UNIV
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