11 Biological filtration and separation media for use in water treatment; waste treatment media for use in wastewater trickling filters, sewage treatment facilities and industrial waste treatment facilities; solid liquid separation media; separation media for use in air scrubbing and stripping water towers; filters made of fiber for water filtration; fibrous filtering media for general industrial use; water filtering apparatus; water filtration units; cooling tower equipment and components, namely, cooling tower accessories in the nature of drift eliminators, mist eliminators, anti-fouling vertical flow fills, splash fills, splash fill accessories, namely, Anti-splash tap nozzles, inlet louvers and associated nozzles; wastewater equipment components, namely, cross-corrugated fills and vertical flow fills; tube settlers; trickling filters for water; surface media for use in evaporative heat exchangers; water treatment equipment, namely, drainage water treatment tanks, waste water treatment tanks, water purification and filtration apparatus for clarification and filtration of water, waste water and industrial water,[machines for water filtration and treatment, namely, sludge and particle removal machines, sludge and particle removal system comprising shredder pumps, scrapers, skimmers, header wings, control panels, electrically powered drivers, driver track, reinforced umbilical connector cords, and discharge hoses and parts therefor;] water purification equipment, namely, water filtration units; wastewater equipment components, namely, plastic sprinkler spray nozzles sold as a unit with water purification and treatment systems; filter media made of polyvinyl chloride for use in the treatment of waste water; submerged waste water treatment system comprising filtering media, restraint system, air diffusers and a field-adjustable base support system for filter media; [Sludge treatment units; waste water treatment units; water and sewage purification installations; sludge treatment installations; Waste water and water and sludge collector system components, namely, nonmetallic sprockets, non-metallic wall brackets and rails, non-metallic chains, non-metallic and metallic head-shaft assemblies, spindles, collars and interlock keys, clutch assemblies, and clarifiers, collectors, sludge and scum skimmers, and scrapers all sold as a unit]