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. 06, 1978
Filed:
Nov. 12, 1976
Applicant:
Inventor:
David S Ross, Lorain, OH (US);
Assignee:
Sterling Drug, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01C / ; C02C / ;
U.S. Cl.
CPC ...
210 59 ; 55 70 ; 55160 ; 55195 ; 210 71 ; 210120 ; 210180 ; 210181 ; 2102 / ; 423238 ;
Abstract
A method and apparatus for removing ammonia nitrogen from wastewater at any given temperature. The apparatus and method includes the concept of increasing the pH of the wastewater to a highly basic condition, exposinng the wastewater to a vacuum having an absolute pressure at least approaching the vapor pressure of the wastewater proportional to the given temperature whereby ammonia gas is then desorbed from the wastewater, and subsequently absorbing the desorbed ammonia in a body of liquid having a pH substantially less than the highly basic condition of the original wastewater.