9Simon Judd,Claire Judd.The MBR Book:Principles and applications of membrane bioreactors in water and wastewater treatment[M] .2007.
10Mauret M, Paul E, Peutch-Costes E, et al.Application of experimental research methodology to the study of nitrification in mixed culture.Water Sci Technol,1996,34(1- 2):245-252.