From active solar biosolids dryers to an aggressive office-recycling program, the Noblesville (Ind.) Wastewater Treatment Plant has done its part to help the city become a state-certified CLEAN Community for its environmental policies.
Energy controllers, UV disinfection, a high-efficiency boiler, reuse of biogas, and even optimized travel routes for checking lift stations are all part of the plant’s approach.
Utility director Ray Thompson says the 10 mgd (design) activated sludge plant has improved its performance while using less energy even as its city of 50,000 has been adding 10,000 residents every five years (population in 2000 was 28,500).
Expansion and efficiency
Over the last
