Monday, September 9, 2024
11:30 AM - 12:00 PM
Location Name
New Approaches to Nu-trients: Optimization at the Franklin WRF

In 2018, construction began on an expansion project at the Franklin WRF to increase the liquids treatment capacity from 12- to 16-mgd and produce Class A Biosolids as part of the City’s sustainable long-term approach to wastewater management. With the goal of producing Class A biosolids, a Cambi thermal hydrolysis process (THP) was installed as the centerpiece of the cutting-edge biosolids system expansion. Throughout planning, the potential for increasing levels of nutrients returned into the liquids process as part of the sidestream from the new biosolids process was considered; however, until operations commenced last spring, actual operating data was not available to understand the full impacts. Over the past year, CDM Smith and the City staff have engaged in a plan to evaluate, trouble shoot and optimize the treatment process to address the elevated phosphorous and ammonia levels introduced into the system by the thermal hydrolysis process (THP); as well as continual optimize the operations of the biosolids system. This presentation will discuss the overall approach to optimizing the nutrient management and operations of the biosolids system, as well as lessons learned to date from the process. Performance data will be presented from optimization activities completed to date.