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Fluid treatment media support system

  • US 6,261,453 B1
  • Filed: 10/21/1998
  • Issued: 07/17/2001
  • Est. Priority Date: 04/26/1996
  • Status: Expired due to Fees
First Claim
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1. A system for supporting granular filter media comprising:

  • a filter comprising a filter bottom, underdrain blocks adjacent the filter bottom and filter media;

    a rigid porous plate positioned over the underdrain blocks to support the filter media;

    wherein the porous plate includes integral layers of different pore size.

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