曝气生物滤池脱氮效能及机理的研究

Study Efficiency and Mechanism of Nitrification-Denitrification in Aerated Biofilter

文章主要研究了曝气生物滤池脱氮的效能和机理。通过测定不同pH值和温度下水中总氮、氨氮、亚硝态氮和硝态氮的浓度来分析其脱氮效能和机理。实验结果表明：当进水氨氮浓度为47～76mg/L,总氮浓度为48～77mg/L时,曝气生物滤池在水温25℃、pH 7．5条件下有较高脱氮效率。同时发现,反应器中出现了亚硝酸盐积累的现象,

Study has been made on the efficiency and mechanism of nitrification -denitrification in aerated biofilter. We analyzed the efficiency of nitrification -clenitrification in aerated biofilter by measuring TN, NH^＋4-N, NO^-2-N and NO^-3-N of the water with different pH value and temperature.The test result show that good effect of nitrogen removal can be achieved at water temperature of 25℃, and pH value of 7.5 when the influent loading of NH^＋4-N and TN are 47-76mg/L and 48-77 mg/L.Furthermore, the obvious NO^-2 accumulation and shortcut nitrificationdenitrification were found in the biofilter.