Rotary Digester Operational Realities.

The article reports on equipment wear, inspections and critical maintenance of municipal solid waste composting plants that utilize the rotary digester technology. Many compost facility design engineers believe a rotary digester that processes municipal solid waste, source separated or mixed, followed by a trommel screen, offers an advantage over other technologies in separating inorganic material from compostable organic wastes. Representatives from composting plants acknowledged that they had operational problems related to cracks in the structural steel shells of their digesters. INSET: Digester Wear And Tear.