The complexity of biological activities and the number of process variables important to nutrient removal in advanced activated sludge wastewater treatment plants (WWTPs) require the use of process simulation. Process simulation can help engineers evaluating different treatment processes and designing the best biological nutrient removal (BNR) process. It can help operators optimize their plant performance and, at the same time, reduce their operating cost associated with aeration and methanol addition.
To Everything There Is a Season: Lessons from Four Seasons of Phosphorus Removal at Greene County Sugarcreek WRRF
This case study analyzed phosphorus (P) removal from municipal wastewater during the past four summer permit seasons at the Greene County Sugarcreek Water Resource Reclamation Facility. The facility has utilized both chemical removal and enhanced biological phosphorus removal (EBPR) to provide supplemental P removal in excess of metabolic P removal in order to comply with concentration-based effluent P limits. Both methods were demonstrated to achieve an effluent total phosphorus (TP) concentration of less than 0.5 mg/L. Alum was utilized for chemical phosphorus removal.