Practical application of gas turbine waste heat for sludge dewatering

The design, operation and performance of the Jones Island Wastewater Treatment Plant in Milwaukee are discussed. This plant uses gas turbine-generators to supply power for its continuous operation, and uses turbine exhaust gas for combustion air for large rotary dryers which dewater the sewage sludge. Operation of the waste heat recovery system has resulted in a 72 percent reduction in energy requirements for the dryer plant, and a 25 percent reduction in energy requirements for the total waste treatment plant. (LCL)