SUPPLEMENTAL BILGE FILTRATON SYSTEM

摘要

A discharge water system (10) for the bilge (22) of a boat (12) includes a primary bilge discharge system (16) and a supplemental bilge filtration system (34). The primary discharge system (16) includes a primary pump (20) operable when the fluid in the bilge (22) collects above a predetermined level "L" in the boat (12) to discharge bilge water overboard. The supplemental system (34) includes a filter assembly (36) with filter media (57) for removing hydrocarbons in bilge water passing through the media; and a supplemental pump (40) operable when the water in the bilge (22) collects to a selected level "S" below the operating level "L" of the primary pump to pump bilge water to the filter assembly and then to discharge the essentially hydrocarbon-free bilge water overboard. The filter assembly (36) includes a primary filter cartridge (52) and a secondary filter cartridge (54), both of which include hydrocarbon-absorbing media (57), and are connected in series. A pressure sensor (80) and remote indicating device (82) provide an indication of the primary filter cartridge (54) becoming spent.