Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1989-06-30
1991-11-12
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
2041823, 204186, 204260, 204263, 204264, 204276, 204283, 204302, 210748, C02F 146
Patent
active
050645153
ABSTRACT:
An apparatus and method for continuously removing liquid from an aqueous suspension; the apparatus consists of a filter housing; an electrofilter disposed within the housing to provide a crossflow chamber and filtrate chamber within the housing; an inlet for supplying a suspension to the crossflow chamber and an outlet for removing a suspension reduced in liquid content from the crossflow chamber; both the inlet and the outlet may be disposed so as to provide a crossflow of the suspension across the surface of the elecltrofilter or disposed to provide a batch process with optional stirring; and an outlet for removing liquid from the filtrate chamber. The filter material of the electrofilter is conductive so that the filter material functions as the first electrode as well as a filter. A second electrode is disposed on the filtrate side of the electrofilter.
A method for continuously separting a liquid from an aqueous suspension while reducing membrane or filter fouling includes providing a crossflow apparatus having an electrofilter disposed therein; pumping the aqueous suspension into the crossflow apparatus at a pressure adapted to cause flow of filtrate through the electrofilter; and concurrently with pumping the suspension into the apparatus supplying electrical energy to the electrofilter at a voltage adapted to reduce fouling of the electrofilter.
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Battelle (Memorial Institute)
Gorgos Kathryn
Niebling John F.
Wiesmann Klaus H.
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