Sewage sludge dewatering device coupled with electroosmotic pressure filtration

Abstract

The invention discloses an electroosmosis and pressure filtration coupled sewage sludge dehydrating device, which comprises a pressure filtration container (1), an anode plate (2), a cathode plate (3) and a direct-current power supply (4), wherein the anode plate (2) is arranged at the upper part of the pressure filtration container (1); the cathode plate (3) is arranged at the lower part of the pressure filtration container (1); a positive electrode and a negative electrode of the direct-current power supply (4) are electrically connected with the anode plate (2) and the cathode plate (3) respectively; the anode plate (2) and the cathode plate (3) are both provided with water outlet holes (5); filter clothes (5.1) are laid on the water outlet holes (5); the anode plate (3) is connected with a hydraulic system (6) used for driving the anode plate (3) to move. By adopting the electroosmosis and pressure filtration coupled sewage sludge dehydrating device, the resistance of sludge on an anode layer is increased slowly; the dehydration effect is good; the moisture content, in the thickness direction, of the sludge is uniformly distributed.

Description

technical field [0001] The invention relates to the field of sewage sludge treatment, in particular to a sewage sludge dewatering device coupled with electroosmotic pressure filtration. Background technique [0002] The high water content of sludge is the bottleneck restricting the treatment and disposal of sludge. The sludge with high water content is not only bulky, but also contains a large amount of organic matter, heavy metals and harmful microorganisms, which are easy to be corrupted or released into the environment, causing secondary pollution. It will have adverse effects on the subsequent landfill, incineration and resource utilization of sludge. Therefore, sludge dehydration reduction is the primary purpose of sludge treatment, and reduction is the basis for realizing other "three modernizations" of sludge. The drier the sludge, the more beneficial the subsequent treatment and disposal. [0003] Electroosmotic dehydration technology utilizes a special electric dou...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides an anode layer sludge resistance increase Slow, good dewatering effect, uniform distribution of moisture content in the direction of sludge thickness, electro-osmotic pressure filtration coupled sewage sludge dewatering device

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