8C Nicolella, M C M van Loosdrecht, J J Heijnen. Wastewater treatment with particulate biofilm reactors. Journal of Biotechnology,2000:80,1-33.
9KOENING A, KAY J N, WAN I M. Physical properties of de-watered waste water sludge for landfilling[J]. Water Science and Technology, 1996, 34(3-4): 533-540.
10W. McCoy. Biological aerated filters: A new alternative.Wat. Environ. Tech. , 1997, 9 (2): 39 ～ 42
