The corncob was pretreated by 1. 5% NaOH,1% H2SO4,1. 5% H2O2and alkaline hydrogen peroxide( caustic soda solution with 1. 5% H2O2) combined with ultraviolet radiation. And the characteristics of carbon released,denitrification and bioattachment capability of using pretreated corncob as carbon source for denitrification were studied in carbon release and denitrification experiments in laboratory scale. The results showed that the denitrification efficiency and the utilizability of the carbon released by the ...