Pilot testing and development of a full-scale carrousel~( direct R ) activated sludge system for treating potato processing wastewaters

摘要

Plant P is a major potato processor producing various types of frozen potato products. Figure 1 shows a simplified schematic of the plant's operation. As may be seen, wastewater comes from a number of operations in the plant, including washing and peeling of potatoes and plant wash-down. Wastewater from different sources at the plant is collected in a main sewer and sent for primary treatment. Wastewater contains soil, potato peels, potato pieces, of different sizes, fats, oils and greases, detergents, cleaning agents, sanitizers and disinfectants, etc. Primary treatment consists of floating grease removal screening, and settling of solids.