Oil and gas water treatment addresses complex streams containing hydrocarbons, suspended solids, salts, metals, treatment additives and microorganisms. Upstream applications include produced-water separation, injection-water conditioning, enhanced oil recovery and hydraulic-fracturing water management. Downstream facilities require cooling-water, boiler-water and refinery-wastewater treatment to maintain process reliability and meet discharge standards. Treatment systems combine chemical conditioning, oil-water separation, flotation, filtration, membranes, biological processing and evaporation. Demand is influenced by produced-water volumes, disposal constraints, reuse objectives and environmental requirements. Suppliers differentiate through application-specific chemistry, compact treatment systems, mobile technologies and onsite service. Research coverage evaluates produced-water chemicals, separation equipment, reuse technologies, regulatory developments, project activity and opportunities in reinjection, beneficial reuse and reduced freshwater consumption.
