water treatment systems used to remove contaminants from water; Water treatment systems, namely, separator units, gas injection units, mixers, and clarifiers; Water treatment systems that use oil and gas separators to treat flowing water; Waste water treatment systems; Water treatment systems for treating water to make suitable for environmental specifications for disposal or recycle; Water treatment systems for removing hydrocarbons and other contaminants from water; Water treatment equipment, namely, oil and gas separators, gas injection units, mixers, and clarifiers; Water treatment equipment, namely, separators and clarifiers for removing hydrocarbons and other contaminants from water; Water treatment systems for removing contaminants from water for commercial and industrial purposes; water treatment equipment, namely, equipment that separates and removes contaminants from water by use of infusion of gas bubbles and gravity separation; Water treatment systems, namely, separators and clarifiers for use in treatment of liquids in the nature of water, waste water and industrial water; Machines for treating water to remove solids and other contaminants, namely, separators, pumps, mixers, and clarifiers; Equipment for the treatment of wastewater, namely, separators and clarifiers