SNAD生物膜厌氧氨氧化活性的氨氮抑制动力学研究.pdfVIP

中国环境科学 2016,36(10) ：2957~2963 China Environmental Science SNAD 生物膜厌氧氨氧化活性的氨氮抑制动力学研究 * 郑照明,李 军 ,马 静,杜 佳,赵白航 (北京工业大学建筑工程学院,北京 100124) 摘要：通过批试实验研究了氨氮浓度对 SNAD 生物膜厌氧氨氧化性能的影响. SNAD 生物膜反应器以生活污水为进水.进水NH4+-N 和 COD 浓度平均值分别为 70mg/L 和 180mg/L,出水 NH4+-N, NO2--N, NO3--N 和 COD 浓度平均值分别为 2mg/L, 2mg/L, 7mg/L 和 50mg/L. SNAD 生物膜具有良好的厌氧氨氧化活性.初始 NH4+-N 和 NO2--N 浓度都为 70mg/L 时,厌氧氨氧化批试 NH4+-N 、NO2--N 和 TIN 去除速率分别 为 0.121kg N/(kg VSS·d), 0.180kg N/(kg VSS·d)和 0.267kg N/(kg VSS·d). 采用 Haldane 模型可以很好的拟合氨氮浓度对厌氧氨氧化活性的 影响.在高 FA 和低 FA 工况下氨氮浓度对厌氧氨氧化活性的抑制动力学常数相差不大. M1(FA 浓度为 0.7~20.4mg/L)和 M2(FA 浓度为 6.3~190.5mg/L)的最大NO2--N 理论去除速率 rmax 分别为 0.209kg N/(kg VSS·d)和 0.221kg N/(kg VSS·d),氨氮半饱和常数 Ks 分别为 9.5mg/L 和 6.1mg/L,氨氮自身抑制常数 KI 分别为 422mg/L 和 597mg/L.氨氮(而不是游离氨)对 SNAD 生物膜的厌氧氨氧化活性起主要抑制作用. 关键词：SNAD 生物膜；厌氧氨氧化；氨氮；抑制作用；动力学特性 中图分类号：X703.5 文献标识码：A 文章编号：1000-6923(2016)10-2957-07 The kinetic coefficients of ammonium inhibition on the Anammox activity of SNAD biofilm. ZHENG Zhao-ming, LI * Jun , MA Jing, DU Jia, ZHAO Bai-hang (The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China). China Environmental Science, 2016,36(10)：2957~2963 Abstract ：The effect of ammonium concentrations on the anaerobic ammonium oxidation (Anammox) activity of simultaneous partial nitrification, anaerobic ammonium oxidization and denitrification (SNAD) biofilm was investigated in batch tests. The SNAD biofilm reactor performed stable nitrogen removal performance with the influent of domestic wastewater. The average influent NH4+-N and COD concentrations were 70mg/L and 180mg/L, respectively. As a result, the average effluent NH4+-N, NO2--N and NO3--N concentrations were 2mg/L, 2mg/L, 7mg/L and 50mg/L, respectively. The SNAD biofilm performed good Ana