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:
Jul. 04, 1995
Filed:
Jun. 25, 1993
Applicant:
Inventor:
Richard Steele, Arden, NC (US);
Assignee:
Hazen & Sawyer, P.C., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210751 ; 210764 ; 210768 ; 422 33 ;
Abstract
A method to remove pathogens from dewatered sludge and to reduce vector attraction that includes the steps of raising the pH 12 of the sludge above 12, subjecting the sludge to low ambient (near zero) pressure and/or elevating the shear pressure on the sludge after the sludge has been treated with a bulking agent to increase stiffness. Exposure to a vacuum enhances pathogen destruction and helps remove odiferous gases for vector control.