Welcome to Nippon Gases Wastewater Welcome to Nippon Gases Wastewater Solutions for Water & Wastewater Smart water treatment technologies. Wastewater applications Alkaline Wastewater pH Neutralisation CO2 for Aluminium Reduction Remineralisation Water Softening Uncontrolled Struvite Prevention Reduce mainteinance costs. Gases we use Carbon dioxide for water and wastewater for pH control. CO2 for Water Carbon Dioxide for wastewater. Read more CO2 We are here to help Contact us At Nippon Gases we are called "The Gas Professionals" for a reason, give us a call as we are always here to help with solutions.