Embracing Variety: Cincinnati’s Experience with Maximizing Aeration System Energy Efficiency
The Metropolitan Sewer District of Greater Cincinnati (MSDGC) is upgrading the secondary aeration systems of its three largest water resource recovery facilities (WRRFs). MSDGC serves a population of 800,000 and operates seven WRRFs with a combined daily average flow of 700,000 m3/d (184 mgd). Aeration systems typically account for 40% to 60% of the total…