Cartridge Filtration

Cartridge Filtration.   Cartridge filtration typically uses filter elements or cartridges mounted in a pressure vessel. The filter cartridges are sheet or wound fiber material supported by screens or perforated plate made of stainless steel or plastic. Cartridge filters are usually restricted to polishing service because they foul quickly in roughing service and the replacement cost is high. A typical application is the essentially complete removal of suspended solids in cycle makeup demineralizer influent water that has already been filtered using granular media. Wound cotton or meltblown polypropylene fiber cartridges are good choices for this service. Some of the newer cartridges are being developed with the fiber porosity graded large to small. This design offers longer service life than single-size fiber cartridges.