Abstract:Effects of two biofilm growing methods on the start-up and performance of simulated river bioreactors were studied. The river bioreactor operated by enhanced biofilm growing method performed better than the natural biofilm growing one, reducing the start-up period for its earlier maturation indicated by 70% removal efficiency of NH3-N. In the steady running stage, the removal efficiencies of NH3-N and CODMn in two bioreactors both reached 92% and 82%, respectively. The biomass and EPS concentration of the enhanced growing biofilm were 1.38 and 1.41 times more than the natural one, and its biofilm structure was more compact as well. The removal efficiencies of NH3-N and CODMn in both bioreactors fluctuated when aeration condition changed, and the enhanced biofilm growing method made the ecosystem of biofilm steadier compared with the natural one. T test showed that P(NH3-N) 0.001, which suggested that there were significant effects of the biofilm growing methods on the community structure of biofilm and stability of bio-system.
收稿日期: 2009-12-18
引用本文:
徐京, 朱亮, 丁炜, 冯丽娟, 徐向阳. 挂膜方式对模拟河道生物反应器启动与稳态运行的影响[J]. 中国环境科学, 2010, 30(8): 1091-1096.
XU Jing, ZHU Liang, DING Wei, FENG Li-Juan, XU Xiang-Yang. Effects of biofilm growing methods on start-up and performances for simulated river bioreactor.. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(8): 1091-1096.