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Method and facility for treating effluents loaded with organic material, particularly by wet oxidation and with internal solid residue recycling, and purification facility therefor

  • US 5,948,275 A
  • Filed: 11/18/1996
  • Issued: 09/07/1999
  • Est. Priority Date: 03/21/1994
  • Status: Expired due to Term
First Claim
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1. A method for the purification of industrial and/or urban effluents containing a substantial proportion of soluble organic matter and/or organic matter in suspension, comprising the acts of:

  • treating said effluents in a wet air oxidation reactor within which said effluents are made to undergo an oxidation in the presence of at least one oxidizing gas so as to mineralize a major part of the organic matter contained in said effluents, the treating act producing, firstly, a gas phase and, secondly, an essentially liquid phase containing mainly soluble residual organic matter as well as an essentially mineral solid phase in suspension,separating the mineral solid phase in suspension from said essentially liquid phase resulting from the treating act to isolate said solid phase; and

    recycling at least a fraction of said separated solid phase within said wet air oxidation reactor.

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