Effect of high-strength ammonia nitrogen acclimation on sludge activity in
sequencing batch reactor |
| |
Authors: | Feifei Wang ? Yuanhong Ding Lei Ge Hongqiang Ren and Lili Ding |
| |
Institution: | State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China |
| |
Abstract: | The effect of high-strength ammonia nitrogen acclimation on sludge activity in sequencing batch reactor (SBR) was investigated. Two
batch experiments, RUN1 and RUN2, were conducted with the influent ammonia nitrogen concentrations 60 and 500 mg/L, respectively.
The sludges inoculated from RUN1 and RUN2 were used to treat a series of influent with ammonia nitrogen concentrations of 59, 232,
368, 604 and 1152 mg/L. It is found that the activated sludge acclimated to higher ammonia nitrogen concentrations revealed higher
COD and NH4
+-N removal efficiencies, and slower DHA decrease. The results confirmed that the activities of the bacteria in activated
sludge in SBR were inhibited by high-strength ammonia nitrogen, whereas the activated sludge acclimated to high-strength ammonia
nitrogen showed substantial resistance to inhibition by influents containing high levels of ammonia nitrogen. |
| |
Keywords: | activated sludge sequencing batch reactor high-strength ammonia nitrogen dehydrogenase activity |
本文献已被 CNKI 万方数据 ScienceDirect PubMed 等数据库收录! |
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《环境科学学报(英文版)》下载免费的PDF全文 |