Patent ID: 6926830
Filing Date: 2005-08-09
Classification: C02F,Y02W,Y10S

Abstract:
1. A system for treating wastewater comprising at least one reactor comprising a) at least a first tank interconnected to a second tank for retaining wastewater therein and discharging treated wastewater therefrom, said tanks provided with means for influence and means for effluence to allow fluid level within at least one tank to be fillable to a filled level and emptied to a lower discharged level; b) independently controllable first and second means for stage generation provided for each said first and second tank respectively; c) carriers for growth of biomass provided in each of said tanks; and d) a controller for controlling the operation of said first means for stage generation to create a first condition for the selective growth of a first biomass on said carriers within said first tank to form a first sludge, said first sludge adapted for performing a first bioreaction stage in said wastewater; and said controller further adapted for controlling the operation of said second means for stage generation to create a second condition for the selective growth of a second biomass on said carriers within said second tank to form a second sludge, said second sludge adapted for performing a second bioreaction stage in said wastewater.