Treatment using fixed film processes and ballasted settling

摘要

A system and method is provided for water and wastewater treatment. The system comprises a fixed film biological process and a ballasted flocculation process. The system comprises a fixed film reactor fluidly connected to a source of wastewater and configured to provide a fixed film effluent. The system further comprises a source of ballast fluidly connected to the fixed film effluent and configured to provide a ballasted effluent. A clarifier is provided in the system that is fluidly connected to the ballasted effluent. The clarifier comprises a treated effluent outlet and a ballasted solids outlet and is configured to separate a treated diluent from ballasted solids.