Membrane bioreactor with gas lift system
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United States of America Patent
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-
Feb 27, 1996
Grant Date -
N/A
app pub date -
Dec 21, 1994
filing date -
Dec 24, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus is described for treating polluted water. The apparatus comprises a supply system for polluted water; an activated-sludge reactor; one or more filter membrane modules; an air supply system and a discharge system for the treated water. The filter membrane modules comprise hollow membranes within a casing. Said filter membrane modules on one side adjoin the activated-sludge reactor and on the other side adjoin air distribution means. The activated-sludge reactor communicates, via a bypass line, with a sludge receiving container which adjoins the air distribution means. The apparatus functions in such a way that the water to be treated and air supplied are flowing in the same direction through the hollow membranes, the permeate flowing through the membranes towards the space between the casing and the membranes, where it is discharged via permeate discharge system.
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