Lycoming County, PA
Brinjac was retained by the Lycoming County Water and Sewer Authority to prepare a study of the Authority’s wastewater conveyance and sewage treatment plant. Major issues addressed included issues relative to Pennsylvania’s Chesapeake Bay Tributary Strategy; specifically the goals for Biological Nutrient Reduction, including evaluation of the capability of the existing facilities, development of a range of Enhanced Nutrient Removal (ENR) upgrade alternatives available for the WWTP, and selection of a recommended approach to handle the identified BNR needs. In addition, projections of future growth through 2027 and resultant wastewater generation within the designated growth area are part of this special study to re-evaluate development potentials and its impact on the MRSS WWTP. The study is required to address the immediate, short- and long-term upgrade needs of the existing WWTP.
Brinjac determined that the acceptable long-term upgrade needs would include expanding the WWTP from 1.50 MGD to 3.0 MGD and that the facility would also be required to have ENR capabilities. Brinjac assembled three long-term treatment alternatives. Each of the three are required to accomplish the BOD and TSS removal to secondary standards and nutrient removal to ENR levels. In addition, the alternatives were evaluated based on their abilities to re-use the plant’s existing infrastructure to the maximum extent possible. The three process alternatives included:
• Sequencing Batch Reactor (SBR) plus Tertiary Filtration,
• Membrane Bioreactor (MBR), and
• Integrated Fixed-Film Activated Sludge (IFAS) system plus Advanced Filtration (Post-denitrification and Tertiary Filtration).