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:
Jun. 19, 2012
Filed:
Oct. 31, 2007
Catherine Daines-martinez, Andresy, FR;
Jean-christophe Schrotter, Maisons-Laffitte, FR;
Karine Drouet, Acheres, FR;
Abdelkader Gaid, Paris, FR;
Catherine Daines-Martinez, Andresy, FR;
Jean-Christophe Schrotter, Maisons-Laffitte, FR;
Karine Drouet, Acheres, FR;
Abdelkader Gaid, Paris, FR;
Veolia Water Solutions & Technologies Support, Saint-Maurice Cedex, FR;
Abstract
A method of removing phosphonates from water includes directing the water into a first settling zone. The water is then directed to a membrane filtration zone and is filtered therein to produce a concentrate containing phosphonates. The concentrate containing phosphonates is then contacted with sludge such that at least some of the phosphonates in the concentrate are adsorbed onto the sludge. Flocculant is added to the sludge and the concentrate to form a floc-mixture which is directed to a second settling zone to form treated concentrate.