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. 08, 2003
Filed:
Oct. 12, 2001
Applicant:
Inventor:
Charles E. Tharp, Columbia, MO (US);
Assignee:
Environmental Dynamics, Inc., Columbia, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F 3/04 ;
U.S. Cl.
CPC ...
B01F 3/04 ;
Abstract
A fine bubble diffuser membrane used in the aeration of wastewater is treated with biocide to inhibit growth and accumulation of biological materials on the membrane. The membrane may be constructed of EPDM rubber or urethane. The biocide may be carbolic acid either dispersed throughout the membrane or applied as a coating on the surface of the membrane exposed to the wastewater. The membrane is a flexible and elastic structure impervious to liquid and provided with slits that close to prevent wastewater inflow in the absence of aeration and open in response to aeration pressure to discharge air into the wastewater.