Case Study

Carbon Dioxide For pH Control Of Landfill Leachate

Source: Praxair, Inc.

Carbon Dioxide For pH Control Of Landfill Leachate

A landfill operator’s leachate treatment plant in Missouri required pH reduction following lime-softening and prior to the biological wastewater treatment process. Carbon dioxide (CO2) was chosen as a substitute for sulfuric acid due to improved process control and a reduced tendency to form scale.