Patent ID: 6959817

Claim:
An industrial cartridge for filtering cooling water in a filtration system having a pump for drawing water through the industrial cartridge, the cartridge comprising: a frame surrounding an interior volume, a fabric filter material attached to the fame and enclosing the interior volume, wherein the fabric filter material is arranged to pass water, and wherein the fabric filter material defines a first surface that accepts water from a source and a second surface arranged in fluid connection with the pump to deliver filtered cooling water therefrom, wherein the frame and fabric filter material are benign to marine life, and a multitude of perforations arranged in the fabric filter material wherein the cooling water passes through the perforations, a bottom of the frame defining an outlet to permit filtered water to exit said cartridge, an air sparging line defining an air entrance near the bottom of said frame to allow compressed air to enter said interior volume, and an air escape valve on a top of said frame through which the compressed air may escape from said interior volume.