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. 24, 2001
Filed:
Dec. 10, 1999
Edward E. Boss, Houston, TX (US);
Samuel L. Shepherd, Kingwood, TX (US);
Other;
Abstract
A process for treating sewage containing biological solids including the steps of mixing the sewage with oxygen-containing hydro fluoro ether polymers, retaining the sewage with the hydro fluoro ether polymers for a desired period of time so as to produce oxygenated sewage and carbon dioxide-containing hydro fluoro ether polymers, and separating the carbon dioxide-containing hydro fluoro ether polymers from the oxygenated sewage. Water is separated from the oxygenated sewage so as to produce a sludge. Oxygen is mixed with the carbon dioxide-containing hydro fluoro ether polymers so as to oxygenate the hydro fluoro ether polymers and to remove carbon dioxide therefrom. The sewage is retained with the hydro fluoro etherpolymers at a temperature of between 32° and 140° F. The sewage is dewatered prior to mixing so that the dewatered sewage has a water content of less than 93 percent by weight. The steps of mixing and retaining can be carried in a closed vessel. The hydro, fluoro ether polymers can be an emulsion containing perfluoro-bis-chlorobutyl ether.