11 Apparatus for steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes, namely, apparatus and instruments for use in the purification, separation and sterilization of liquids and gases used in the biotechnology, pharmaceutical, medical, biopharmaceutical, energy, food and beverage industries; [ distillation apparatus not for scientific purposes; ] electro-chemical flue gas scrubbing machines; emission control systems comprised primarily of indirect contact heat exchangers and ozone-based control devices using gas and vapor condensing to control and treat emissions; equipment for treating groundwater and soil comprising distribution lines, distribution manifolds, drop tubes, well seals and blowers; filters and filtering devices for air and gas conditioning; fluid separation apparatus for separation of gas from liquid in a chemical or oil refinery; gas condensers, other than parts of machines; gas recycling system comprised primarily of one or more of the following pieces of equipment, namely, pressure swing adsorption equipment, temperature swing adsorption equipment, perm selective membrane equipment, solvent extraction equipment, pervaporation equipment or solid adsorption equipment, for the recovery, purification and return of gases in industrial applications; industrial-water purifying apparatus; liquid flow regulating apparatus, namely, hydraulic compensators; [ steam heating apparatus for industrial purposes; ] thickening and dewatering machines for use in treatment of liquids including water, industrial effluent and sewage; water purification and filtration apparatus; water treatment apparatus, namely, clarification and thickening machines for use in treatment of liquids in the nature of water, waste water and industrial water; fluid separation apparatus for separating chemicals, oil and bioaccumulative substances from water; wastewater treatment plants for sewage and water from processing plants, namely, biological contactor for treatment of sewage and drainage water, sewage purification and treatment plants, clarification, thickening and dewatering machines, sustainable onsite water recycling and wastewater treatment systems; waste water purification apparatus, installations and tanks; [ waste water treatment tanks; ] fluid separation units for separating chemicals, oil and bioaccumulative substances from water; gas purification machines for the purification of flue gas from boilers and engines; sustainable onsite water recycling and wastewater treatment systems, incinerators, [ alternative energy generation power plants, waste processing machines using heat and chemical breakdown processes, ] machines for converting environmentally hazardous waste and low heating value materials, machines for converting alternative fuels into combustible fuel, combustion chamber designed to convert flammable liquids and hazardous waste into combustible fuel, machines for optimizing the combustion properties of low heating value materials for waste treatment and conversion plants, sorting, incineration and disposal of waste; incinerators for waste; incinerators and combustion chambers for the conversion of the flammable liquids and hazardous waste into energy; [ biogas power plants and power plants for conversion of biomass into energy; ] gas scrubbers; wet scrubbers for flue gas purification and for purification of other gas streams