8Zhang Y Q,Xu A T, Li G. Research on dynamics design for activated sludge system [ J ]. J China University Min Techno1,2002,12 (2) : 148 - 151.
9Sevimli M F, Aydin A F, Ozturk I,et al. Evaluation of the alternative treatment processes to upgrade an opium alkaloid wastewater treatment plant [ J ]. Water Sci Technol,2000,41 ( 1 ) :223 - 230.
10Coen F, Vanderhaegen B, Boonen I, et al, Nitrogen removal upgrade of a wastewater treatment plant within existing reactor volumes:A simulation supported scenario analysis [ J ]. Water Sci Technol, 1996,34 ( 3 - 4 ) : 339 -346.
