Response of nitrite accumulation and microbial community to free ammonia and dissolved oxygen treatment of high ammonium wastewater

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	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.