Method of purifying waste water biologically

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5900150
SERIAL NO

08269577

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method of purifying waste water biologically, in which at least one biological reaction is performed in at least one biological reactor containing microorganisms in activated sludge, and the waste water is separated from the activated sludge in a clarification basin, with at least a fraction of the activated sludge from said biological reactor being recirculated, wherein, prior to admitting the waste water to be treated into said biological reactor, at least a fraction of the polluting particles in suspension therein are separated out therefrom, the separated polluting particles are sent to a sludge activation reactor that is separate and disposed in parallel, the separating polluting particles are used as the main substrate for the development of microorganisms in strict aerobiosis, and the superactivated sludge obtained in this way is injected into the biological reactor(s).

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Patent Owner(s)

Patent OwnerAddress
LYONNAISE DES EAUX-DUMEZ S A72 AVENUE DE LA LIBERTE 92000 NANTERRE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Audic, Jean-Marc Conflans Sainte Honorine, FR 7 92
Fayoux, Christian Versailles, FR 2 10

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