Electroosmosis dewatering method and device of water-containing material

A dehydration device and electro-osmosis technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of low space utilization and affect the overall efficiency of the dehydrator, and achieve stability, device simplification, equipment simplification, and cost reduction Effect

Active Publication Date: 2011-05-18
YIXING NENGDA ENVIRONMENTAL PROTECTION TECHCO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the past, electroosmotic dehydration mostly used continuous mobile operation. Although continuous operation has been realized, the anode must also be made into a round roll shape, which leads to the problem of low space utilization and seriously affects the overall efficiency of the dehydrator.

Method used

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  • Electroosmosis dewatering method and device of water-containing material
  • Electroosmosis dewatering method and device of water-containing material

Examples

Experimental program
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Effect test

Embodiment 1

[0023] This example is an example of electroosmotic dehydration of sewage sludge. Such as figure 1 The dewatering unit shown is a sludge dewaterer with 4 layers of electro-osmosis units. The filtered sludge 1 is sent to the sludge distributor 3 through the sludge booster pump 2, and then the sludge is pressed to the stainless steel mesh belt cathode 5 through the compressed air 4, and stops after entering the dehydration area as the cathode belt moves. move. The anode 6 made of insoluble metal descends, contacts with the sludge and applies pressure properly, and direct current (power supply not shown in the figure) is introduced. Under the action of the electric field, the moisture in the sludge gathers to the sludge side of the cathode, and further under the mechanical pressure of the anode and cathode wire mesh, the accumulated water permeates the metal mesh of the cathode from the support mechanism set under the cathode belt Water outlet 7 discharges. When the dehydrati...

Embodiment 2

[0025] This example is an example of electroosmotic dehydration of distiller's grains and food residues. The structure of the electroosmotic dehydration device is basically as follows: figure 1 As shown, the difference is the water-containing material dehydrator with 6 layers of electroosmotic units, and the material in this example corresponds to the sludge in Example 1. Among them, the upper 2 dehydration units, the middle 2 dehydration units, and the lower 2 dehydration units form 3 groups respectively. The 3 groups operate in chronological order, that is, from top to bottom, and divide into 3 times within the time period. The time difference of the segment performs the action respectively. The feed pump is provided with 3 outlets to supply material to the material distributors of the upper, middle and lower units respectively. The angle between the cathode and anode planes relative to the horizontal is 0 degrees. The initial material thickness is controlled between 6 an...

Embodiment 3

[0027] The dehydration device is the same as that of Example 1, except that the cathode belt is inclined upward by 8 degrees from the material inlet to the outlet.

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Abstract

The invention relates to an electroosmosis dewatering method and a device of a water-containing material. In the invention, a water-containing material is dewatered by utilizing a direct-current electric field; an electroosmosis dewatering unit comprises a cathode made of wire mesh capable moving, an anode capable of lifting on the cathode panel along the vertical direction and a subsidiary facility; and the whole dewatering system is provided with multiple layers of units in the direction vertical to the horizontal plane. The device has the characteristics of high space utilization rate, stable running and low cost.

Description

technical field [0001] The invention relates to an electroosmotic dehydration method and device for water-containing materials, such as dehydration devices for food residues, sludge and coal slime produced in the process of wastewater treatment, especially for high-dryness dehydration of sludge, which belongs to water treatment and Dehydration technology in the field of solid waste treatment. Background technique [0002] Food residues in the production process of bean curd residue, shochu, and soy sauce, solid waste discharged from biological fermentation, and sludge and coal slime generated in the biological treatment of organic wastewater are often processed by vacuum filtration, pressure filtration, and centrifugal separation. achieve dehydration. Due to the large amount of organic matter and organisms contained in water-containing materials such as sludge, it is difficult to achieve the desired water content in mechanical dehydration. However, high water content cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 不公告发明人
Owner YIXING NENGDA ENVIRONMENTAL PROTECTION TECHCO
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