A state-run correctional center uses a system of three lagoons to treat wastewater from the correctional facility and its institutional laundry operation. The state hired Barr to design changes to the system so it would more reliably meet current and future permit limits, including those for total suspended solids, ammonia-nitrogen, and E. coli.
In the first phase of work, our wastewater team evaluated the system’s condition and design capacity; developed a number of options for improving performance of the system; prepared planning-level costs for the options; and developed project phasing options for the state’s consideration.
The treatment-process modifications Barr evaluated included sludge removal from the lagoons; changes to the amount and type of aeration employed; addition of fixed-film nitrification; addition of ultraviolet disinfection; and potential closure of at least one lagoon. The second phase of work—final design—will begin once the client has selected a process modification to implement.