英文标题
The kinetic coefficients of ammonium inhibition on the Anammox activity of SNAD biofilm
英文摘要
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 Anammox activity. The NH4+-N, NO2--N and total inorganic nitrogen (TIN) removal rates were 0.121kg N/(kg VSS·d), 0.180kg N/(kg VSS·d) and 0.267kg N/(kg VSS·d) with the initial NH4+-N and NO2--N concentrations of both 70mg/L. Moreover, Haldane model was applied to investigate the ammonium inhibition on the Anammox process. There is no obvious difference in kinetic coefficients of ammonium inhibition under high or low FA conditions. As for M1 (FA ranges of 0.7mg/L and 20.4mg/L), thermax,Ks andKI of ammonium were 0.209kg NO2--N/(kg VSS·d), 9.5mg/L and 422mg/L. As for M2 (FA ranges of 6.3mg/L and 190.5mg/L), thermax,Ks andKI of ammonium were 0.221kg NO2--N/(kg VSS·d), 6.1mg/L and 597mg/L. Ammonium rather than FA is the main inhibitor for Anammox process.
翻译关键词
Anammox
inhibition
kinetic characteristics
SNAD biofilm
ammonium
获取号
WF:perioarticalzghjkx201610015
