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Process and apparatus for the treatment of waste water

  • US 20020117444A1
  • Filed: 11/15/2001
  • Published: 08/29/2002
  • Est. Priority Date: 03/15/2000
  • Status: Active Grant
First Claim
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1. A process for the treatment of waste water, comprising the steps of:

  • drawing waste water into a vessel containing an activated sludge;

    mixing the waste water and the activated sludge in the vessel to create a mixture;

    exposing the mixture in the vessel to anaerobic conditions for a sufficient time to permit the release of phosphorous and denitrification of oxidized nitrogen;

    exposing the mixture in the vessel to alternating periods of aerobic and anoxic conditions for a sufficient time to permit the oxidation of organic contaminants in the waste water and nitrogenous waste products and the uptake of phosphorous followed by the denitrification of oxidized nitrogen;

    extracting the mixture from the reactor while exposing the mixture to alternating periods of aerobic and anoxic conditions; and

    passing the mixture through a membrane unit to separate suspended solids in the mixture from liquid.

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