PRESSURIZED ELECTROOSMOTIC DEWATERING IN A FILTER CYCLE |
| |
Authors: | Olivier Larue Thomas Mouroko-Mitoulou Eug ne Vorobiev |
| |
Affiliation: | Olivier Larue ,Thomas Mouroko-Mitoulou,Eugè,ne Vorobiev |
| |
Abstract: | This paper describes the role of pressurized electroosmotic dewatering (EOD) in a filter cycle. A laboratory-scale filter-press was used to filter a highly conductive silica suspension under constant pressure, followed by washing and mechanical precompression of the filter cake and finally by pressurized EOD at constant electric current. The influence of filter cycle parameters (filtration and washing pressure and duration, mechanical pressure, and electric field intensity) on the final cake dryness and energy consumption was studied. Electrodes of different materials, forms, and surfaces were used.
The optimal conditions of each filter cycle operation were found to minimize the energy consumption during EOD and maximize the cake dryness. With mechanical pressure and electric field intensity increasing, the total energy consumption increased, but the specific energy consumption (per kg of expressed water) decreased, and the final filter cake was dryer. The pressurized EOD also used less energy than thermal drying. |
| |
Keywords: | Dewatering Electroosmosis Filter cycle Filter-press Silica suspension |
本文献已被 InformaWorld 等数据库收录! |
|