At design conditions, almost 11 billion gallons of wastewater is treated on an annual basis.
Large debris is removed as wastewater flows through trash racks.
Next, finer materials are removed by mechanical fine screens. Screened flow is directed to grit chambers where abrasive materials such as sand and egg shells are removed. Biological treatment follows primary clarification where the aeration process converts remaining fine and dissolved organic pollutants into larger biological solids that can settle. Air is applied to the aeration tank contents which allows aerobic bacteria to assimilate pollutants contained in the wastewater. Ammonia is also removed in the aeration process.