Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal

doi:10.1007/s00449-020-02302-y

	Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal
	Li, Hanxiang 2; Wang, Shuai 2; Zhao, Fan 2; Fang, Fang 2; Chen, Youpeng 2; Yan, Peng 2; Yang, Jixiang 1,2; Gu, Shujun 2; Guo, Jinsong 2
刊名	BIOPROCESS AND BIOSYSTEMS ENGINEERING
	2020-02-04
页码	13
关键词	Micro-zone One stage Partial nitritation Anammox Granular sludge
ISSN号	1615-7591
DOI	10.1007/s00449-020-02302-y
通讯作者	Fang, Fang(fangfangcq@cqu.edu.cn)
英文摘要	The one-stage partial nitritation-anammox (PN-A) process is considered an efficient process for low-cost nitrogen removal. In this study, the nitrogen removal performance of different-sized granules in a one-stage PN-A reactor was studied. The total autotrophic nitrogen removal rate (TANRR) of the granular sludge increased as the granule size increased, and the TANRR of granular sludge with a radius larger than 500 mu m reached 0.14 kgN kgVSS(-1) d(-1). High-throughput sequencing revealed that the abundance of ammonium-oxidizing bacteria and anaerobic ammonium-oxidizing (anammox) bacteria in granular sludge of different sizes differed, indicating that the bacterial community structure was affected by the granule size. The TANRR of different-sized granules was affected by the volumes of aerobic micro-zone and anaerobic micro-zone inside the granule. Appropriate micro-zone volumes inside the granules could be regulated by the dissolved oxygen (DO) concentration of the reactor, which are favourable for achieving a balance between partial nitritation and anammox and then satisfactory nitrogen removal. Small-volume variations in the range of micro-zones have a significant influence on the balance between partial nitritation and anammox. The proper DO concentration required for different-sized granules to achieve better nitrogen removal differed. This study provides a novel perspective for understanding the effect of micro-zones of granular sludge on one-stage PN-A nitrogen removal.
资助项目	National Natural Science Foundation of China[51878091] ; National Natural Science Foundation of China[21876016] ; National Key Research and Development Program of China[2019YFD1100501] ; Chongqing Science and Technology Commission[cstc2018jcyjAX0610]
WOS研究方向	Biotechnology & Applied Microbiology ; Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000511050300002
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/10403]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Fang, Fang
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, 266 Fangzheng Ave,Shuitu Hitech Ind Pk, Chongqing 400714, Peoples R China 2.Chongqing Univ, Coll Environm & Ecol, 174 Shazhengjie, Chongqing 400045, Peoples R China
推荐引用方式 GB/T 7714	Li, Hanxiang,Wang, Shuai,Zhao, Fan,et al. Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal[J]. BIOPROCESS AND BIOSYSTEMS ENGINEERING,2020:13.
APA	Li, Hanxiang.,Wang, Shuai.,Zhao, Fan.,Fang, Fang.,Chen, Youpeng.,...&Guo, Jinsong.(2020).Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal.BIOPROCESS AND BIOSYSTEMS ENGINEERING,13.
MLA	Li, Hanxiang,et al."Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal".BIOPROCESS AND BIOSYSTEMS ENGINEERING (2020):13.