A method of cleaning a membrane filtration module (6), the module (6) including at least one membrane (8) located in a feed-containing vessel (7), the membrane (8) having a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall. The method comprising the steps of: suspending the filtration operation; performing a cleaning process on the membrane wall to dislodge contaminant matter therefrom into liquid surrounding the membrane (8); performing a high velocity sweep of the feed-containing vessel (7) to remove the liquid containing the dislodged contaminant matter; and recommencing the filtration operation. An improved gas scouring method is also disclosed.
申请公布号
WO03013706(A1)
申请公布日期
2003.02.20
申请号
WO2002AU01065
申请日期
2002.08.08
申请人
U.S. FILTER WASTEWATER GROUP, INC.;ZHA, FUFANG;STUBBS, ANTHONY, JAMES