Method for treating wastewater containing active sludge
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United States of America Patent
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Apr 14, 2009
Grant Date -
May 1, 2008
app pub date -
Jul 19, 2007
filing date -
Oct 26, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A method includes: disposing a filter into a body of wastewater containing active sludge, the filter including a supporting member having an outlet, and a filter media enclosing the supporting member and supported by the supporting member so as to have a predetermined firm shape, the filter media including a non-woven substrate and a fibrous filtering layer attached to the non-woven substrate and having a pore diameter ranging from 0.001 to 15 μm and a layer thickness ranging from 10 to 200 μm, the fibrous filtering layer being made from fibers having a fiber diameter ranging from 20 to 1000 nm; and driving the wastewater to pass through the filter using a pump connected to the outlet of the supporting member of the filter.
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