【摘要】 利用SBR反应器,探讨了溶解氧(DO)和有机碳源(COD)对同步硝化好氧反硝化的影响。结果表明,DO范围在0.5~0.6 mg/L时最适合于同步硝化好氧反硝化脱氮。在同步硝化反硝化过程中出现了亚硝酸盐氮的积累,推断经由短程硝化反硝化途径。总氮的去除率随着COD/N(碳氮比)的增加而增加,当COD/N为10.05时,总氮去除率最高可达70.39%。继续增加碳氮比时,总氮去除率增加不多,并且还会导致硝化作用不完全。当存在足够的易降解有机碳源时,能发生完全的好氧反硝化作用。更多还原

【Abstract】 In a SBR reactor,the influences of dissolved oxygen (DO) and organic carbon source(COD) on simultaneous nitrificaion and denitrification(SND)were studied.The result indicates that it is most suited for simultaneous nitrification and denitrification when DO is in the range of 0.5～0.6 mg/L.The phenomenon of nitrate accumulation appears in the course of simultaneous nitrification and denitrification,it is inferred that it is via the short distance nitrification and denitrification.The total nitrogen removal rate increases when COD/N is increased,when COD/N is 10.05,total nitrogen removal could reach the highest rate of 70.39%.When COD/N increases further,nitrogen removal rate has no obvious growing,and will result in nitrifying function incompletely.A complete aerobic denitrification function can take place when there are enough degradable organic carbon sources.更多还原