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Waste water treatment system with slip stream

  • US 6,709,599 B1
  • Filed: 04/26/2002
  • Issued: 03/23/2004
  • Est. Priority Date: 10/27/1999
  • Status: Expired due to Term
First Claim
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1. A waste water treatment apparatus for use in line with a source of waste water, said system comprising:

  • a first filter having an upstream side and an opposing downstream side and a pore size, said upstream side being in fluid communication with said source of waste water and adapted so that said waste water passes through said first filter leaving a first filter reject flow on said upstream side, said first filter reject flow containing particulate;

    slipstream means for creating and controlling a slipstream flow from said reject flow on said upstream side of said first filter; and

    a second filter having a micron rating larger than said pore size of said first filter, said second filter primarily providing mechanical filtration, said second filter having an upstream side and an opposing downstream side, said second filter being connected to a conduit so that, when said slipstream means creates and controls said slipstream flow, said second filter receives on said upstream side thereof a controlled flow containing said first filter reject flow particulate, said second filter collecting a second filter reject on said upstream side thereof, said second filter having second filter filtrate flow on said downstream side thereof, said second filter filtrate flow being recycled to said upstream side of said first filter, wherein waste water flow from said source of waste water is directed first to said first filter prior to a portion of said waste water flow being directed to said second filter by said slipstream means, whereby, due to repeated recycling of said slipstream between said first filter and said second filter, about 100% of said waste water passes through said first filter and about 100% of said particulate is collected by said second filter as said second filter reject without the need to drain said slipstream containing said first filter reject.

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