Facility Modifications Include New Dewatering and Drying Systems
Working for New England Fertilizer Company (NEFCO), Tighe & Bond designed the modifications to the existing sludge storage facility in Cumberland, MD to include dewatering and drying systems. Our team reused existing dewatering pumps; partitioning and upgrades to the existing sludge storage building, including new egress doors, new lights, a new heating system, insulation and fire protection; and new operator amenities including electrical room, mechanical room, pellet oil storage, workshop, ADA-accessible laboratory/plant manager office, kitchen and bathroom/locker facilities.
The modified facilities include a new dewatering device and thermal drying train to process up to 11 DTPD at 27% cake solids. The new systems include a centrifuge, cake conveyor, recycle bin and conveyor, mixer, dryer with furnace, air/solids separator, screener, crusher, cooling conveyor, and pellet silo with oiling system. The air emissions are controlled via a tray scrubber/condenser and regenerative thermal oxidizer. The exhaust is discharged through a GEP stack that will promote additional dilution of the exhaust through dispersion. In addition, a new odor control scrubber to control odorous emissions from the sludge storage facility treats up to 13,500 ACFM and removes 99% of H2S and NH3.
The design and construction of this fast-track project were complete and the facility was fully operational within 12 months of notice to proceed with the final design.
Tighe & Bond provided all engineering design services to modify and incorporate dewatering and drying systems into the existing sludge storage facility.