METHOD AND SYSTEM FOR TREATING WASTEWATER IN AN INTEGRATED FIXED FILM ACTIVATED SLUDGE SEQUENCING BATCH REACTOR

摘要

An integrated fixed film activated sludge sequencing batch reactor is provided where both suspended biomass and biomass supported on biofilm carriers are utilized to biologically treat wastewater received by the sequencing batch reactor. The sequencing batch reactor includes two hydraulically connected tanks with suspended biomass being contained in at least one tank and biomass supported on biofilm carriers in the other tank.

主权项

1. A method of treating wastewater in an integrated fixed film activated sludge sequencing batch reactor having first and second hydraulically connected tanks, the method comprising:
filling the first and second tanks with the wastewater; biologically treating the wastewater in the sequencing batch reactor employing an integrated fixed film activated sludge process including: i. biologically treating the wastewater in the first tank with suspended biomass; ii. biologically treating the wastewater in the second tank with biomass supported on moveable biofilm carriers contained in the second tank; settling the suspended biomass and the biofilm carriers; and decanting the wastewater in the first and second tanks of the sequencing batch reactor.