Problem: The waste-to-energy facility in Charlotte, North Carolina, sought to efficiently dewater solids after anaerobic digestion.

Solution: The facility uses three Pieralisi Jumbo 3 HS decanter centrifuges. Material is pre-processed to remove debris and then aerobically digested. The biogas is scrubbed and used to generate renewable electricity. The biosolids are dewatered in decanter centrifuge made of duplex stainless steel. The scroll inside is made of AISI 316 SS and has tungsten carbide tiles around the flight for durability. Dewatering involves an input of up to 100 gpm at 4-6% solids. The centrifuge produces cake at 22-25% solids that can be used as a fertilizer or soil amendment. 

Result: The modular design of the decanter makes it easy to maintain and repair. The unit reliably and efficiently handles biosolids while producing renewable energy. 513-275-4720; www.pieralisi.com.