Method for direct selection of a predetemined low sludge index in a Sequencing Batch Reactor system

摘要

Method for selecting an activated sludge (AS) having a predetermined, low sludge index (SI) for waste-water treatment in sequencing batch reactors (SBR). Method for selecting an activated sludge (AS) having a predetermined, low sludge index (SI) for waste-water treatment in sequencing batch reactors (SBR) comprises: (A) supplying waste water to an SBR; (B) allowing AS to settle; (C) removal of settled and/or settling upper sludge fraction (having high SI) as excess sludge; (D) determining SI of the remaining sludge; and (E) repeating steps (b)-(d) until the predetermined, low, value of SI is reached.