期刊
BIORESOURCE TECHNOLOGY
卷 220, 期 -, 页码 8-16出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.06.131
关键词
Anammox; Landfill leachate; Biofilm; EPS; PCR
资金
- Natural Science Foundation of China [51478013]
- Funding Projects of Beijing Municipal Commission of Education
High levels of organics negatively affect Anammox for treating landfill leachate. To enhance the ability of Anammox to survive against adverse environments, a lab-scale two-stage Anammox system using a Sequencing Biofilm Batch Reactor was applied to treat mature landfill leachate under 35 degrees C. Over 107 days, with influent total nitrogen (TN) and chemical oxygen demand (COD) concentrations of 3000 +/- 100 and 3000 +/- 100 mg/L, effluent TN was below 20 mg/L. For extracellular polymeric substance (EPS) of Anammox, slime-EPS and loosely-bound-EPS of floccules were both higher than biofilm, while tight-bound-EPS of biofilm was significantly higher, contributing to biofilm formation. Quantitative microbial analysis showed that as influent COD increased, Anammox gene ratios of biofilm increased from 1.34% to 13.28%; the gene ratios of floccule first increased, then decreased to 3.88%. This indicated that Anammox and heterotrophic bacteria could coexist because of the biofilm, leading to stable nitrogen removal performance, even when organics were present. (C) 2016 Published by Elsevier Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据