Description  Claims  Drawing  Cited references 

US2005269262A1   [0003] 
GB2489037A   [0003] 
WO9416999A1   [0003] 
US8758620B   [0062] 
WO03027031A   [0091] 
WO2009033291A   [0091] 

Standard Methods for the Examination of Water and Wastewater, EW Rice   [0060] 
Respirometry as a simple operational tool for monitoring of MBBR and IFAS Biofilm systems   [0060] 
The influence of carrier size and shape in the moving bed biofilm process   [0060] 
Advances in water quality control   [0112] 
Federation of Canadian Municipalities and National Research Council (FCMNRC)   [0112]