Horizontally arranged cathode vacuum electroosmosis sludge dehydration device and method

Abstract

The invention provides a horizontally arranged cathode vacuum electroosmosis sludge dehydration device and method. The horizontally arranged cathode vacuum electroosmosis sludge dehydration device comprises a sludge pond, a filter pipe net is horizontally paved in the sludge pond, plane cathode is horizontally and closely paved on the upper part of the filter pipe net, the plane cathode and the filter pipe net are both buried into the sludge in the sludge pond, plane anode is arranged on the upper surface of the sludge in the sludge pond, the plane anode is electrically connected with the positive pole of a direct-current power supply, and the plane cathode is electrically connected with the negative pole of the direct-current power supply; and a water-gas separation device is arranged onthe edge of the sludge pond, one end of the water-gas separation device communicates with a vacuum pump, and the other end of the water-gas separation device communicates with the filter pipe net. According to the horizontally arranged cathode vacuum electroosmosis sludge dehydration device and method, the filter pipe net and the plane cathode are sequentially arranged at the bottom of the sludgepond from bottom to top, the plane anode is paved on the surface of the sludge, the gravity field and the electric field can be fully and effectively utilized, and thus water in the sludge is separated from the sludge under the joint action of the electric field and the gravity field.

Description

technical field [0001] The invention belongs to the technical field of sludge dewatering treatment, and in particular relates to a horizontally arranged cathode vacuum electroosmotic sludge dehydration device and method. Background technique [0002] In the construction, widening, and dredging of inland rivers, waterways, and lakes, a large amount of black and odorous sludge will inevitably be produced. The harmless treatment of black and odorous sludge has become a problem that needs to be studied and solved urgently. Dredged silt has high moisture content, high clay content, and poor permeability. After one or two years of storage, although the surface is dry, the internal structure is still water-based and colloidal, and it cannot be used beneficially. Therefore, it is urgent to develop a rapid dehydration technology for dredged silt yards that is suitable for the needs of my country's inland lake dredging projects. [0003] After a potential is applied to both ends of t...

AI Technical Summary

Problems solved by technology

But this method is not suitable for sludge dehydration treatment, because the moisture content of the sludge is extremely high, and the deformation after dehydration is extremely large. The sedimentation of the surface of the sludge exposes the electrode and reduces the effective length of the electrode; the lateral shrinkage makes the vertical crack wide and blocks the soil. current in the body

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