Air Liquide USA

Air Liquide, through its Nexelia for Water Treatment offering, supplies industrial gases and application technologies for water and wastewater treatment operations. The company brings over 35 years of experience in water treatment and serves as a global leader in industrial gases, providing oxygen for biochemical oxygen demand management and activated sludge processes, and carbon dioxide for pH reduction, VOC stripping, and odor control. The Nexelia model bundles gases with application technologies and expert support, committing to pre-defined performance results rather than simple gas supply. For drinking water treatment, the ASPAL Pure line provides CO2 injection for calco-carbonic equilibrium stabilization and O2 and O3 oxidation for disinfection. For wastewater treatment, the ASPAL Clean line delivers pure oxygen injection into biological basins and advanced O3 oxidation for sludge reduction. For cooling water, the ASPAL Cool line uses CO2 dissolution for scale prevention. Equipment includes deep static basin oxygen injectors, OXY INJECTOR-TURBOX compact floating oxygen transfer systems, gas concentration regulators with sensor-driven motor valves, and dynamic gas-injection devices. The company also produces hollow fiber membranes for gas separation and offers Design-Build-Operate services for municipalities, industries, and water utility companies. Air Liquide operates across the beverages, chemicals, pharmaceuticals, and biotechnology sectors.