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.:

US 9688555 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 27, 2017

Filed:

Jan. 10, 2014
Applicant:

Veolia Water Solutions & Technologies Support, Saint-Maurice, FR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 3/30 (2006.01); C02F 3/12 (2006.01); C12P 7/62 (2006.01);
U.S. Cl.
CPC ...
C02F 3/1263 (2013.01); C02F 3/302 (2013.01); C12P 7/62 (2013.01); C12P 7/625 (2013.01); C02F 2203/004 (2013.01); Y02W 10/15 (2015.05);
Abstract

A method of biologically treating wastewater and, at the same time, incorporating processes that aim to increase the PHA accumulation potential of biomass used in the treatment of the wastewater. The method includes biologically treating the wastewater and enhancing PHA accumulation potential of the biomass by subjecting the biomass to a primary feast-famine process where the biomass is subjected to repeated cycles of feast and primary famine conditions. From time-to-time, the method entails deviating from the primary feast-famine process to a secondary famine process. The secondary famine process comprises subjecting the biomass to secondary famine conditions for a period of time that is substantially greater than the average time period of the primary famine conditions.


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