Youths Benefit Elementary School Wastewater Treatment Plant
The Youths Benefit Elementary School WWTP project included engineering design and permitting to replace the existing septic system with an advanced nutrient removal treatment system with groundwater disposal. The existing treatment at this facility consisted of septic tanks and disposal fields that required relocation with the construction of the new school. The proposed new disposal fields initiated a groundwater discharge permit for this facility that requires nutrient treatment to 10 mg/L or less Total Nitrogen due to the existing drain field proximity to the property boundary, adjacent homeowners, and well head protection areas.
GMB was retained by the Lee Foundation Company, Inc. to design and permit the new Membrane Biological Reactor (MBR) treatment system to suit the facility site with a treatment capacity of 9,605 gallons per day. Nutrient discharge for this facility is limited to less than 10 mg/L Total Nitrogen.
This facility will consist of an influent screening tank, flow equalization tanks, polyethylene tanks, membrane modules, chemical feed systems, and interconnecting pumps and piping. The tanks and membranes provide anoxic and aeration tanks in a Modified Ludzack-Ettinger (MLE) process arrangement with the membrane modules performing the solids separation to produce the clear effluent from the recycling mixed liquor. In addition to the design work on the project, GMB has assisted the Harford County Public Schools and Lee Foundation with application to MDE for a Construction Permit and Harford County for a groundwater disposal permit.