Aeration system promotes treatment with minimum energy usage
Problem
The Manteca (California) Wastewater Quality Control Facility (9.87 mgd design, 7.6 mgd average) seasonally accepts industrial food processing effluent. Water use reductions combined with population growth drastically increased influent BOD and total nitrogen.
Solution
The facility was designed by HERWIT Engineering with turbo blowers and complete aeration systems provided by APG-Neuros. The system includes dissolved oxygen control in multiple aeration zones. The aeration improvements produced electricity savings of 963,000 kWh/year, and the facility received energy rebates of $93,000. HERWIT and APG-Neuros further optimized aeration control to improve nitrogen removal in response to the increased nitrogen loadings. The ammonia limit is
