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Denitrification of high concentration of nitrate wastewater was investigated in expanded granular sludge bed (EGSB) reactor with sodium acetate as the carbon source. The optimal parameters were achieved with C/N mole ratio of 2.0, liquid up-flow velocity (V up ) of 3.0m/h and pH of 6.2–8.2. Complete denitrification can be achieved even with nitrate nitrogen concentration as high as 14000mg/L...
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