Performance Analysis of a Continuously Fed, Intermittently Decanted Activated Sludge Plant Receiving a High Ammonia Packing House Waste

The cyclical modification of the activated sludge process involves the separation of carbon removal, nitrification, denitrification and sedimentation processes temporally in a single reactor rather than spatially in separate reactors as in the conventional activated sludge process. Little information is available in the literature concerning the limits of this process under actual full-scale operating conditions. A continuously fed-intermittently decanted (CFID) cyclical activated sludge plant treating summer flows of 4 MGD and winter flows of 6 MGD began operation in Union City, Tennessee in October 1986. The design and startup of this facility are documented by Young. ^{1 , 2}