| 摘要 |
An improved electro-coalescent/magnetic separation (ECMS) system for removin g contaminants from water, including desalinization, comprises a device (12) f or exposing a stream of water to be treated to an electric field, followed by introduction of ionized coagulating substances from generator (26), includin g ionized gases and/or metal ions, into venturi (24), followed by plural filte r stages (18, 20). The first filter stage (18) may comprise a polarizable glas s, alumina, or ceramic media provided as a bed in a tank with an underdrain, so as to provide substantial residence time. A polishing filter (20) may compri se a very fine fiber or organic gel filter element confined between relatively flexible electrically-conductive screen members and provided with a DC power supply to polarize the filter. This assembly is confined between relatively rigid, perforated members such that the filter assembly can move slightly up on backwash to dislodge caked-on contaminants or the like, while preserving the structural integrity of the filter assembly.
|
