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:
Mar. 24, 1981
Filed:
Oct. 26, 1979
Applicant:
Inventors:
David J Krichten, Allentown, PA (US);
David M Nicholas, New Tripoli, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02C / ; C02C / ;
U.S. Cl.
CPC ...
210605 ; 210614 ; 210906 ;
Abstract
A process for promoting the reabsorption and retention by an activated biomass of phosphorous values previously contained by the biomass and released under anaerobic conditions, which process requires initially subjecting the biomass in admixture with a liquid medium to treatment under aerobic conditions employing a relatively high DO. When the pH of the mixture stops increasing, the aerobic treatment is continued but under a second, reduced DO level.