PROCESS FOR TREATING AN EFFLUENT FOR THE PURPOSE OF BRINGING DOWN THE PHOSPHATE CONTENT THEREOF, COMPRISING A STEP OF OPTIMIZED WET HEAT TREATMENT, AND CORRESPONDING EQUIPMENT

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United States of America Patent

APP PUB NO 20150068976A1
SERIAL NO

14374625

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Abstract

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The invention pertains to a method for treating an effluent to be treated in order to reduce its phosphates content, said method comprising a step of anoxic biological treatment of said effluent to be treated, producing a first effluent, a step of aerobic biological treatment of said first effluent, producing a second effluent, a step of recirculating at least a part of said second effluent to the inlet of said anoxic biological treatment step, a step of liquid/solid separation of at least a part of said second effluent, producing a treated effluent and a first denser effluent, a step for producing volatile fatty acids including a wet heat treatment, at a temperature of 100° C. to 350° C., for a residence time of between 10 and 180 minutes, of at least a part of said first denser effluent, a step of anaerobic biological treatment of at least a part of the effluent coming from said wet heat treatment step, and a step of recirculating at least a part of the effluent coming from said anaerobic biological treatment step to the inlet of said anoxic biological treatment step.

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Patent Owner(s)

Patent OwnerAddress
VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORTL'AQUARENE - 1 PLACE MONTGOLFIER SAINT MAURICE 94417

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chauzy, Julien Antony, FR 8 26
Djafer, Malik Boulogne-Billancourt, FR 11 21
Lemaire, Romain Paris, FR 11 93

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