Patent ID: 8673148
Filing Date: 2014-03-18
Classification: B01D

Abstract:
1. A filtration apparatus having a plurality of spirally wound filtration cartridges each sealed to prevent admixture of feed and permeate comprising: a housing having an interior, a fluid feed inlet, a permeate pathway, and a permeate outlet, wherein the permeate pathway directs permeate into the permeate outlet, and a plurality of spirally wound filtration cartridges in parallel, the first surface of each filter layer contacting said permeate spacer layer and the second surface of each filter layer contacting said feed spacer layer, said feed spacer layer being sealed at said first and second sides to said filter layer by the first and second side edge seals, to permit fluid feed entering each filtration cartridge at the top and bottom surfaces to enter said feed spacer layer and to pass through said filter layers, and said permeate spacer layer being sealed at said side to said perforated core by the first side edge seal, and sealed at said bottom surface by the first bottom edge seal to the perforated core, to accept permeate from said filter layer and to direct permeate into said core then into said bottom permeate pathway, whereby permeate exits the filtration apparatus through the housing outlet.