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. 12, 2011
Filed:
Jun. 02, 2008
Dennis Livingston, Austin, TX (US);
Mark Steelman Stone, Cedar Park, TX (US);
Edward Alan David, Austin, TX (US);
Steve Stach, Burnet, TX (US);
Roland Schneider, Round Rock, TX (US);
Dennis Livingston, Austin, TX (US);
Mark Steelman Stone, Cedar Park, TX (US);
Edward Alan David, Austin, TX (US);
Steve Stach, Burnet, TX (US);
Roland Schneider, Round Rock, TX (US);
GLV Finance Hungary KFT, Munsbach, LU;
Abstract
A cleaning system and method remove localized caked or dewatered solids from flat-plate membranes in a sewage treatment plant. The caked sludge on the membranes is removed by intense coherent water sprays directed into the spaces between cartridges of a cassette, without removing the cartridges from the cassette. The sprays can be delivered from the top and/or bottom of the cassette, or the side panels of a cassette can be removed for spraying from at least one side, preferably both sides, using a mechanical device with movable spray bars and motor-driven advancing of the spray bars. In one preferred form of the system the apparatus includes horizontal cutting jets followed by angled cutting jets that further break up and wash away the loosened sludge. Jet diameter, velocity and pressure are controlled so as not to damage the membranes or cartridges but to achieve efficient cleaning.