Inhibition factors and Kinetic model for ammonium inhibition on the anammox process of the SNAD biofilm

作     者：Zhaoming Zheng Jun Li Jing Ma Jia Du Fan Wang Wei Bian Yanzhuo Zhang Baihang Zhao 

作者机构：The College of Architecture and Civil EngineeringBeijing University of TechnologyBeijing 100124China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2017年第29卷第3期

页      面：60-67页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Water Pollution Control and Management Technology Major Projects(No.2014ZX 07201-011)and(No.2015ZX 07202-013) the National Natural Science Foundation of China(No.51308010) the Research Fund for the Doctoral Program of Higher Education(No.20131103120017) 

主　　题：AnammoxSNAD biofilmHaldane modelKinetic characteristicsFree ammoniaAmmonium 

摘      要：The aim of the present work was to evaluate the anaerobic ammonium oxidation （anammox） activity of simultaneous partial nitrification, anammox and denitrification （SNAD） biofilm with different substrate concentrations and pH values. Kaldnes rings taken from the SNAD biofilm reactor were incubated in batch tests to determine the anammox activity. Haldane model was applied to investigate the ammonium inhibition on anammox process. As for nitrite inhibition, the NH4-N removal rate of anammox process remained 87.4% of the maximum rate with the NO2-N concentration of 100 mg/L. Based on the results of Haldane model, no obvious difference in kinetic coefficients was observed under high or low free ammonia （FA） conditions, indicating that ammonium rather than FA was the true inhibitor for anammox process of SNAD biofilm. With the pH value of 7.0, the rmax, KS and K of ammonium were 0.209 kg NO2-N/kg VSS/day, 9.5 mg/L and 422 rag/L, respectively. The suitable pH ranges for anammox process were B.0 to 9.0. These results indicate that the SNAD biofilm performs excellent tolerance to adverse conditions.