Response of nitrite accumulation and microbial community to free ammonia and dissolved oxygen treatment of high ammonium wastewater | |
Sui, Qianwen; Liu, Chong; Zhang, Junya; Dong, Hongmin; Zhu, Zhiping; Wang, Yi | |
刊名 | APPLIED MICROBIOLOGY AND BIOTECHNOLOGY |
2016-05 | |
卷号 | 100期号:9页码:4177-4187 |
关键词 | Nitrite accumulation Free ammonia Dissolved oxygen Microbial community High-throughput sequencing |
英文摘要 | The effects of free ammonia (FA) and dissolved oxygen (DO) on nitrite accumulation in the treatment of high ammonium wastewater and on the evolution of the microbial community were investigated. Under high DO conditions (3.75 +/- 0.49 mg/L), FA as high as 10.61 +/- 2.89 mg NH3/L maintained stable nitrite accumulation rate (NAR) of 84 % with NH4 (+)-N load of 2.05 kg N/(m(3) day) at sludge retention time (SRT) of 15-18 days. After 56 days of operation, Proteobacteria and Nitrosomonas were the dominant phylum and genus, respectively; Nitrosomonas increased from 21.14 to 54.57 %. By contrast, under relative low DO and low FA, nitrite-oxidizing bacteria (NOB) were nearly eliminated (NOB/AOB of 0; ammonium-oxidizing bacteria (AOB)), and NAR of 94 % was achieved with lower NH4 (+)-N load of 0.48 kg N/(m(3) day). DO correlated with AOB and NOB abundance, and FA decreased NOB activity and the NOB/AOB ratio. In conclusion, high FA and high DO conditions are optimal for efficient nitrite accumulation. |
收录类别 | SCI |
内容类型 | 期刊论文 |
源URL | [http://ir.rcees.ac.cn/handle/311016/35934] |
专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
推荐引用方式 GB/T 7714 | Sui, Qianwen,Liu, Chong,Zhang, Junya,et al. Response of nitrite accumulation and microbial community to free ammonia and dissolved oxygen treatment of high ammonium wastewater[J]. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,2016,100(9):4177-4187. |
APA | Sui, Qianwen,Liu, Chong,Zhang, Junya,Dong, Hongmin,Zhu, Zhiping,&Wang, Yi.(2016).Response of nitrite accumulation and microbial community to free ammonia and dissolved oxygen treatment of high ammonium wastewater.APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,100(9),4177-4187. |
MLA | Sui, Qianwen,et al."Response of nitrite accumulation and microbial community to free ammonia and dissolved oxygen treatment of high ammonium wastewater".APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 100.9(2016):4177-4187. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论