6Bruno Lacamp, et al. WastewaterNutrient Re moval with Advanced Biofilm Reactors[J]. Water Sci Tech, 1993,23(5,6): 263-267.
7S Adachi,et al. Reclamation and Reuse of Waste water by Biological Aerated FilterProcess [J].Water Sci Tech, 1991,24 (9): 195-204.
8K R Gilmore,et al. Influence of Organic and Am monia Loading on Nitrifer Activityand Nitrifica tion Performance for a Two-stage Biological Aer ated Filter[J]. Water SciTech, 1999, 39 (7) :227-234.