Article: Process Cooling Of Engine/Generator Sets With Reuse Water

By Dr. Marcus N. Allhands, PE, Vice President of Business Development, Orival, Inc.

Located along the banks of one of the largest tributaries to the Mississippi River, this 100 MGD (million gallons per day) wastewater treatment plant (WWTP) has a large demand for service water with low suspended solids. Nearly 3 MGD of water are needed for various on-site services but perhaps none as important as cooling large V-12 internal combustion engine/generator sets. These engines run off of methane gas produced on-site from the anaerobic sludge digestion process. The cooling process passes water one time through the engine blocks and then discharges the water back to the head of the WWTP.