Method and computer program product for treating liquid containing impurities
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United States of America Patent
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Jul 8, 2014
Grant Date -
Jul 14, 2011
app pub date -
Aug 2, 2010
filing date -
Jan 8, 2010
priority date (Note) -
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Abstract
A method and a computer program product perform a backwash process, which facilitates a reduction in a reject rate associated with a water treatment tank. If a backwash process is needed, an upper burst solenoid is operated to start an airlift flow in a first airlift path at a first position and at a first point in time, at a bottom portion of the water treatment tank, and a lower burst solenoid is operated to start an airlift flow in a second airlift path at a second position and at a second point in time. The second position is below the first position and the second point in time is after the first point in time. The airlift flow in the first and second airlift paths enables suitable water flow within the water treatment tank.
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