The Success of South-to-North Water Diversion Project (Eastern Route): From the Perspective of the Distribution of Nitrate Reducing Bacteria in Multistage Constructed Wetland

Posted: 23 Jul 2019

See all articles by Shou-Qing Ni

Shou-Qing Ni

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

Qianxia Li

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

Cuina Bu

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

Hafz Adeel Ahmad

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

Christophe Guimbaud

CNRS - Laboratoire de Physique et de Chimie de l'Environnement et de l'Espace (LPC2E)

Baoyu Gao

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

Zhuangming Qiao

Shandong Meiquan Environmental Protection Technology Co., Ltd.

Shaowu Ding

Shandong Wanhao Fertilizer Co., Ltd

Date Written: July 20, 2019

Abstract

Nitrogen is one of the key environment pollutant threatening the implement of the South-to-North Water Diversion Project (SNWDP). This study revealed that the three microbially mediated nitrate reduction pathways (denitrification, anaerobic ammonium oxidation (anammox) and dissimilatory nitrate reduction to ammonium (DNRA) in multistage constructed wetland (mCW)) contributed significantly to the improvement of water quality in Nansi Lake, guaranteeing the success of SNWDP. DNRA rather than denitrification or anammox occupied a very important position for nitrate reduction in Xinxue River mCW. The quantitative real-time polymerase chain reaction analysis showed that the abundance of DNRA bacteria at all sites was higher than these of denitrifying bacteria and anammox bacteria, ranging from 2.10×1010 to 1.10×1011 copies/g of dry weight sediments. The abundance of DNRA bacteria, denitrifying bacteria and anammox bacteria was significantly negatively correlated with Eh and positively correlated with the NO3--N removal rate by statistical analysis. The total nitrate removal rate reached 85.73% flowing through the mCW. Anaeromyxobacter (belong to Deltaproteobacteria) was the most abundant DNRA bacteria at all sites. Interestingly, Deinococcus-thermus and Actinobacteria were firstly discovered as DNRA bacteria in mCW.

Suggested Citation

Ni, Shou-Qing and Li, Qianxia and Bu, Cuina and Ahmad, Hafz Adeel and Guimbaud, Christophe and Gao, Baoyu and Qiao, Zhuangming and Ding, Shaowu, The Success of South-to-North Water Diversion Project (Eastern Route): From the Perspective of the Distribution of Nitrate Reducing Bacteria in Multistage Constructed Wetland (July 20, 2019). Abstract Proceedings of 2019 International Conference on Resource Sustainability - Cities (icRS Cities). Available at SSRN: https://ssrn.com/abstract=3423234

Shou-Qing Ni (Contact Author)

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering ( email )

27 Shanda Nanlu
South Rd.
Jinan, Shandong 250100
China

Qianxia Li

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

27 Shanda Nanlu
South Rd.
Jinan, Shandong 250100
China

Cuina Bu

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

27 Shanda Nanlu
South Rd.
Jinan, Shandong 250100
China

Hafz Adeel Ahmad

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

27 Shanda Nanlu
South Rd.
Jinan, Shandong 250100
China

Christophe Guimbaud

CNRS - Laboratoire de Physique et de Chimie de l'Environnement et de l'Espace (LPC2E)

France

Baoyu Gao

Shandong University - a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering

27 Shanda Nanlu
South Rd.
Jinan, Shandong 250100
China

Zhuangming Qiao

Shandong Meiquan Environmental Protection Technology Co., Ltd.

China

Shaowu Ding

Shandong Wanhao Fertilizer Co., Ltd

China

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