External ballast and bilge water filtering and absorbing device for use in a local containment area for removing aquatic nonindigenous species, oil and other contaminants from the effluent; Filters for drinking water; Flow restrictors for reverse osmosis water purification units; Sewage purification installations; Waste water purification apparatus, installations and tanks; Water desalination plants; Water filtration and purification units and replacement cartridges and filters therefor; Water purification and filtration apparatus; Water treatment equipment, namely, reverse osmosis filtration units; Water treatment equipment, namely, water filtration units
Environmental Control Apparatus