Sewage sludge dewatering device based on coupling of electroosmosis and mechanical filter press

Abstract

The invention discloses a sewage sludge dehydrating device based on electroosmosis and mechanical pressure filtration coupling. The device 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); the positive electrode and negative electrode of the direct current power supply (4) are respectively connected with the anode plate (2) and the cathode plate (3) electrically; water outlet holes (5) are formed in both the anode plate (2) and the cathode plate (3); filter cloth (5.1) is laid on the water outlet holes (5); the anode plate (2) is connected with a hydraulic system (6) used for driving the anode plate (2) to move; a plurality of anode tubes (7) are arranged on the anode plate (2) and extend downward to be arranged in the pressure filtration container (1). The device has the advantages that the sludge resistance of the anode layer increases slowly; the dehydration effects are good; an electrode is extended by the anode tubes, thus improving the electroosmosis driving force.

Description

technical field [0001] The invention relates to the field of sewage sludge treatment, in particular to a sewage sludge dewatering device based on the coupling of electroosmosis and mechanical 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 util...

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Problems solved by technology

[0007] In view of this, the present invention provides an anode layer sludge resistance increase Sewage sludge dewatering device based on the coupling of electroosmosis and mechanical pressure filtration, which is slow, dewatering effect is good, and the moisture content distribution in the direction of sludge thickness is uniform.

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