Patent ID: 6645374
Filing Date: 2003-11-11
Classification: B01D,C02F,Y02A,Y02E,Y02W,Y10S

Abstract:
A reactor for treating wastewater to reduce concentrations of one or more of BOD, COD, nitrogen and phosphorous comprising,(a) an anaerobic section; (b) a plurality of gas transfer membrane modules for supporting and oxygenating a biofilm on the surface of the gas transfer membranes, the biofilm being in fluid communication with the anaerobic section and having aerobic and anoxic zones; and, (c) an aerobic section in fluid communication with the anaerobic section; (d) a wastewater inlet; and, (e) an outlet wherein wastewater enters the reactor through the inlet and flows through the reactor so as to be treated in the anaerobic section, the aerobic section and by contact with the biofilm before leaving the reactor through the outlet.