Apparatus and installations for decomposing toxic substances in water; Apparatus for disinfecting water; Industrial scrubbers for removing particulate matter from the air during industrial processing, namely, impingement scrubbers, venturi scrubbers and dynamic scrubbers; Ozone sanitizers for air and water; Sewage purification apparatus; Spas in the nature of heated pools; Swimming pool chlorinating apparatus; Swimming pool water cleaning and filtering units; Water filtering apparatus; Water filtration apparatus; Water purification and filtration apparatus; Water purification installations; Water purifying apparatus; Water softening apparatus and installations; Water softening units; Water sterilizers; Water treatment equipment, namely, chemical sterilization units; Water treatment equipment, namely, reverse osmosis filtration units; Water treatment equipment, namely, ultraviolet sterilization units; Water treatment equipment, namely, water filtration units and reverse osmosis units