7OCHIENG A, ODOYO O, MUTSAGO M. Biological treatment of mixed industrial wastewaters in a fluidized bed reactor [J]. Journal of Hazardous Materials, 2003,B96:79- 90.
8TIJHUIS L. Formation and growth of heterotrophic aerobic biofilms on small suspended partical in airlift reactors[J]. Biotechnology and Bioengineering, 1994,44: 595 -608.
9LAMOTTA E J. Kinetics of growth and substrate uptake in a biological film system [J]. Applied and Environmental Microbiology, 1976,31: 286 - 293.