The distribution of dissimilatory nitrate reduction to ammonium bacteria in multistage constructed wetland of Jining, Sh
- PDF / 1,799,204 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 109 Downloads / 180 Views
RESEARCH ARTICLE
The distribution of dissimilatory nitrate reduction to ammonium bacteria in multistage constructed wetland of Jining, Shandong, China Qianxia Li 1,2 & Cuina Bu 2 & Hafz Adeel Ahmad 2 & Christophe Guimbaud 3 & Baoyu Gao 2 & Zhuangming Qiao 4 & Shaowu Ding 5 & Shou-Qing Ni 2 Received: 1 March 2020 / Accepted: 1 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Dissimilatory nitrate reduction to ammonium (DNRA) is an important process of nitrate reduction in the environment. The distribution of DNRA bacteria and the relationships with environmental factors in multistage constructed wetland were investigated in this study. The quantitative real-time polymerase chain reaction analysis showed that the abundance of DNRA bacteria at all sites ranged from 2.10 × 1010 to 1.10 × 1011 copies/g of dry sediments. The Anaeromyxobacter (belong to Deltaproteobacteria) was the most abundant DNRA bacteria at all sites. The Geobater known as DNRA bacteria was also identified in this study. The abundances of DNRA bacteria, denitrifying bacteria, and anammox bacteria were conspicuously negatively correlated with Eh and positively correlated with the NO3--N removal efficency by statistical analysis. Keywords DNRA bacteria . Constructed wetland . Anammox . Denitrification . Environmental factors . Anaeromyxobacter
Introduction Constructed wetland (CW) is designed as an engineered system to remove pollutants from wastewater. Such systems Responsible editor: Diane Purchase Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11356-020-10709-z) contains supplementary material, which is available to authorized users. * Shou-Qing Ni [email protected] 1
State Key Laboratory of Petroleum Pollution Control, Beijing 102206, People’s Republic of China
2
Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, No. 72 Binhai Road, Qingdao 266237, Shandong, People’s Republic of China
3
Laboratoire de Physique et de Chimie de l’Environnement et de l’Espace (LPC2E), CNRS et Université d’Orléans (UMR 7328), 45071 Orléans Cedex 2, France
4
Shandong Meiquan Environmental Protection Technology Co., Ltd., Jinan, People’s Republic of China
5
Shandong Wanhao Fertilizer Co., Ltd., Jinan, People’s Republic of China
facilitate a number of physical, chemical, and biological processes to remove nitrogen from wastewater (Decleyre et al. 2015). The nitrogen is an important pollutant and source of eutrophication of the freshwater system. From different nitrogenous pollutants, nitrate is more prone to leaching and ultimately deteriorate the underground water quality. So, the removal of nitrate is important to save the freshwater system as well as underground water quality. The nitrate is mainly reduced by denitrification (DN), dissimilatory nitrate reduction to ammonium (DNRA), and anaerobic ammonium oxidation (anammox) (Song et al. 2013). The DN and anammox remove nitrate
Data Loading...
