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Quantitative response of nitrogen dynamic processes to functional gene abundances in a pond-ditch circulation system for rural wastewater treatment

文献类型：期刊论文

作者Ma, Lin1,3; Liu, Wei1,2; Tan, Qiyang1,2; Zhou, Qiaohong1; Wu, Zhenbin1; He, Feng1
刊名ECOLOGICAL ENGINEERING
出版日期2019-09-01
卷号134页码:101-111
关键词Pond-ditch circulation system (PDCS) Functional genes Nitrogen transformation rate Quantitative response relationship Potential activity
ISSN号0925-8574
DOI10.1016/j.ecoleng.2019.05.008
英文摘要The pond-ditch circulation system (PDCS) is a promising solution for the restoration of rural wastewater. However, the underlying nitrogen removal mechanisms and roles of functional genes in nitrogen transformation processes have not yet been quantified at the molecular level. In this study, PDCSs have been found to have high removal efficiencies when the chemical oxygen demand (COD) and total nitrogen (TN) was high (> 70%; 62.7-93.9%, respectively). Meanwhile, the presence of simultaneous nitrification, anaerobic ammonium oxidation (anammox), and denitrification processes were the primary nitrogen removal mechanisms in the PDCSs. According to the stepwise regression analysis and path analysis, two key functional gene groups, nosZ/(nirS + nirK) and (nxrA/amoA), were driving these major processes for TN and ammonia nitrogen (NH4+-N), respectively. Moreover, the key functional gene group narG/nxrA was affecting processes related to nitrate-nitrogen (NO3--N) and nitrite-nitrogen (NO2--N) conversion. Furthermore, results from the N-15 isotope pairing technique suggested that for PDCSs, anammox was mainly responsible for nitrogen removal due to its high contribution to total N-2 production (50.3%) in the ditch; denitrification, on the other hand, was primarily attributed to nitrogen removal, rather than the anammox process, in two ponds (41.3-43.1%).
资助项目National Natural Science Foundation of China[51709255] ; China Postdoctoral Science Foundation[2017M622555]
WOS研究方向Environmental Sciences & Ecology ; Engineering
语种英语
WOS记录号WOS:000468733400011
出版者ELSEVIER SCIENCE BV
源URL[http://202.127.146.157/handle/2RYDP1HH/7719]  
专题中国科学院武汉植物园
通讯作者He, Feng
作者单位1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Wuhan Bot Garden, CAS Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Lin,Liu, Wei,Tan, Qiyang,et al. Quantitative response of nitrogen dynamic processes to functional gene abundances in a pond-ditch circulation system for rural wastewater treatment[J]. ECOLOGICAL ENGINEERING,2019,134:101-111.
APA Ma, Lin,Liu, Wei,Tan, Qiyang,Zhou, Qiaohong,Wu, Zhenbin,&He, Feng.(2019).Quantitative response of nitrogen dynamic processes to functional gene abundances in a pond-ditch circulation system for rural wastewater treatment.ECOLOGICAL ENGINEERING,134,101-111.
MLA Ma, Lin,et al."Quantitative response of nitrogen dynamic processes to functional gene abundances in a pond-ditch circulation system for rural wastewater treatment".ECOLOGICAL ENGINEERING 134(2019):101-111.

入库方式： OAI收割

来源：武汉植物园

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