Home page For Wastewater Home page For Wastewater Solutions for Water & Wastewater Smart water treatment technologies Alkaline Wastewater pH Neutralisation WaterSan Nitropro Biological Process Intensification Filamentous Biomass Prevention Foam and Bulk Reduction High Rate Nitrogen Removal WaterSan Oxipro Refractory COD Removal Wastewater Odor Removal Partial Biological Intensification Temporary Biological Intensification Sludge Production Minimisation Uncontrolled Struvite Prevention Reduce mainteinance costs. Gases we use Industrial gases for water and wastewater treatment are oxygen for biological respiration, carbon dioxide for pH control, ozone for intensive chemical oxidation and nitrogen gas for digesters inerting. Oxygen for Water Read more O3 - Ozone Read more CO2 for Water Read more O2 Ozono CO2 Any questions about water? Contact us At Nippon Gases we are called “The Gas Professionals” for a reason, and it’s because we’ll be able to solve any doubt.