The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2015
Filed:
Jan. 18, 2012
Mathieu Sperandio, Venerque, FR;
Angela Manas-llamas, Valladolid, ES;
Francois Decker, Quint Fonsegrives, FR;
Beatrice Biscans, Escalquens, FR;
Mathieu Sperandio, Venerque, FR;
Angela Manas-Llamas, Valladolid, ES;
Francois Decker, Quint Fonsegrives, FR;
Beatrice Biscans, Escalquens, FR;
Valbio, Portet sur Garonne, FR;
Inst National des Sciences Appliquees de Toulouse, Toulouse, FR;
Abstract
A method for the biological treatment of wastewater containing pollutants, using an aerobic biomass, includes a plurality of successive cycles of a predefined duration in order to achieve pollutants removal efficiency of 90% or higher, each of the cycles including the following steps: —introducing a wastewater effluent containing phosphorus and calcium into a reactor containing biomass; —applying an aerobic phase by introducing into the reactor a gas flow containing oxygen for a predefined length of time, sufficient to form aerobic biomass granules; —decanting the aerobic biomass granules thus formed; —and removing at least part of the treated effluent. After each step of introducing effluent into the reactor, the pH in the reactor is maintained at a value above 8 for a length of time at least equal to 10% of the cycle duration.