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:
Dec. 30, 1997
Filed:
Mar. 27, 1995
Applicant:
Inventor:
Carey M Merritt, Pulaski, NY (US);
Assignee:
Niagara Mohawk Power Corporation, Syracuse, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210669 ; 210692 ; 210799 ; 210259 ; 210265 ; 210266 ; 210683 ;
Abstract
Process and apparatus for separating aryl phosphates and esters and hydrolysates thereof from water in an aqueous mixture thereof. A superposed layer of the mixture is decanted from a lower layer of the phosphates, esters and hydrolysates. The superposed layer is filtered with a filter having a pore size of between 1 micron and 25 microns to remove globules and solid particles. The effluent is then subjected to demineralization with an anion exchange resin to remove most of the hydrolysates. Thereafter a sorber composed of an organic polymeric material such as polypropylene removes any remaining phosphates and esters down to less than 250 ppb.