The team of AE2S and Black and Veatch was retained to complete a Biosolids Management Facilities Plan for the Grand Forks, ND Wastewater Treatment Plant (WWTP). The Facilities Plan required completion before the WWTP operational data was available, so biosolids production was estimated based on wastewater contributions from domestic wastewater loads and major industrial loads. Considered biosolids management strategies included various combinations of aerobic digestion, mechanical dewatering, air or thermal drying, composting, landfill disposal, and land application costs. For a more detailed description click here.

Project consisted of the design and construction of a 50 MGD lift station that collects all wastewater conveyed by the City's new interceptor sewer. The lift station provides capacity for 25+ years of growth and development of surrounding areas, as well as peak wet-weather overflows from the City's West Side Interceptor. The lift station is a dry well/wet well type with six 280 horsepower dry-pit submersible pumps driven by 18-pulse variable frequency drives. A separate odor and control room houses a carbon scrubber and hydrogen peroxide dosing system for odor and corrosion control. The lift station also includes a geothermal heating and cooling system for the operating room, a man-lift to reach the 40-foot basement, and a leachate disposal system. For a more detailed description click here.