Method of recovering energy from reverse osmosis waste streams
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United States of America Patent
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Apr 26, 1994
Grant Date -
N/A
app pub date -
Oct 29, 1992
filing date -
Oct 29, 1992
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Hydraulic energy is recovered from the waste brine through a control device, having a central rotatable spool piece controlling fluid flow paths therethrough. The control device, in turn, directs the brine stream of reverse osmosis systems by diverting the brine into work exchangers used to pressurize the feed liquor. All components are made of corrosion resistant materials suitable for use in brine environments. Membrane pressure is held stable by equalization lines within the control device. System capacity can be adjusted externally by changing control dwell time.
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