Environmental Treatment Systems, Inc. (ETS) is a full-service environmental company primarily
serving the industrial wastewater market
Activated
Sludge Process
The activated sludge process is a biological wastewater treatment process that uses microorganisms,
including bacteria, fungi, and protozoa, to speed up decomposition of organic matter. Activated sludge is an aerobic process
requiring oxygen for treatment. As the microorganisms grow and reproduce, waste materials are removed