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Laboratroy Study on Electrokinetic Dewatering of Sewage Sludge
Abstract This paper presents a laboratory study on the use of electrokinetic technique to dewater the sludge collected from a wastewater treatment plant. Simulation tests were carried out on the specimens accommodated in a purposely-designed cylindrical cell. Voltage gradient ranging from 2 to 8 V/cm was applied to drive the movement of water within sludge towards the cathode. Results showed that a linear relationship exists between electroosmotic flow and current. Both the electroosmotic flow and current decreased gradually during the dewatering process as a result of an increase in the electrical resistance of the specimens. The residual water content of sludge showed a non-uniform distribution along the direction from anode towards cathode. A lowest water content of 62% was obtained at the anode, and the dewatering extent is proportional to the electric intensity.
Laboratroy Study on Electrokinetic Dewatering of Sewage Sludge
Abstract This paper presents a laboratory study on the use of electrokinetic technique to dewater the sludge collected from a wastewater treatment plant. Simulation tests were carried out on the specimens accommodated in a purposely-designed cylindrical cell. Voltage gradient ranging from 2 to 8 V/cm was applied to drive the movement of water within sludge towards the cathode. Results showed that a linear relationship exists between electroosmotic flow and current. Both the electroosmotic flow and current decreased gradually during the dewatering process as a result of an increase in the electrical resistance of the specimens. The residual water content of sludge showed a non-uniform distribution along the direction from anode towards cathode. A lowest water content of 62% was obtained at the anode, and the dewatering extent is proportional to the electric intensity.
Laboratroy Study on Electrokinetic Dewatering of Sewage Sludge
Feng, Yuan (author) / Zhan, Tony L. T. (author) / Chen, Yun-Min (author) / Zhang, Quan-Fang (author)
Advances in Environmental Geotechnics ; 662-665
2010-01-01
4 pages
Article/Chapter (Book)
Electronic Resource
English
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