Enhanced adaptability of pyrite-based constructed wetlands for low carbon to nitrogen ratio wastewater treatments: Modulation of nitrogen removal mechanisms and reduction of carbon emissions

被引:13
作者
Dai, Na [1 ]
Yao, Dongdong [1 ]
Li, Yunkai [2 ]
Xie, Huijun [1 ]
Hu, Zhen [2 ]
Zhang, Jian [2 ,3 ]
Liang, Shuang [2 ]
机构
[1] Shandong Univ, Environm Res Inst, Qingdao 266237, Peoples R China
[2] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource R, Qingdao 266237, Peoples R China
[3] Shandong Univ Sci & Technol, Coll Safety & Environm Engn, Qingdao 266590, Peoples R China
基金
中国国家自然科学基金;
关键词
Biological nitrogen removal; Carbon limited wastewater; Dissimilatory nitrate reduction to ammonium; Functional genes; Greenhouse gas reduction; PHOSPHORUS REMOVAL; NITRATE REDUCTION; FERROUS IRON; DENITRIFICATION; OXIDATION;
D O I
10.1016/j.biortech.2024.130348
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Pyrite-based constructed wetlands (CWs) stimulated nitrate removal performance at low carbon to nitrogen (C/ N) ratio has been gaining widely attention. However, the combined effects of pyrite and C/N on the nitrate removal mechanisms and greenhouse gases (GHGs) reduction were ignored. This study found that pyrite-based CWs significantly enhanced nitrate removal in C/N of 0, 1.5 and 3 by effectively driving autotrophic denitrification with high abundance of autotrophs denitrifiers (Rhodanobacter) and nitrate reductase (EC 1.7.7.2), while the enhancement was weakened in C/N of 6 by combined effect of mixotrophic denitrification and dissimilatory nitrate reduction to ammonium (DNRA) with high abundance of organic carbon-degrading bacteria (Stenotrophobacter) and DNRA-related nitrite reductase genes (nrf). Moreover, pyrite addition significantly reduced GHGs emissions from CWs in all stages with the occurrence of iron-coupled autotrophic denitrification. The study shed light on the potential mechanism for pyrite-based CWs for treating low C/N ratio wastewater.
引用
收藏
页数:11
相关论文
共 50 条
  • [31] Enhanced nitrogen removal and quantitative molecular mechanisms in a pilot-scale multistage constructed wetlands planted with Myriophyllum aquaticum treating lagoon swine wastewater
    Wang, Lisha
    He, Zhibin
    [J]. ECOLOGICAL ENGINEERING, 2022, 174
  • [32] Assembling plant diversity mitigates greenhouse gas emissions and achieves high nitrogen removal when treating the low-C/N wastewater by constructed wetlands
    Jiang, Hang
    Du, Yuanyuan
    Han, Wenjuan
    Wang, Lichunxiao
    Xiang, Chenxu
    Ge, Ying
    Chang, Jie
    [J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2023, 30 (01) : 228 - 241
  • [33] Assembling plant diversity mitigates greenhouse gas emissions and achieves high nitrogen removal when treating the low-C/N wastewater by constructed wetlands
    Hang Jiang
    Yuanyuan Du
    Wenjuan Han
    Lichunxiao Wang
    Chenxu Xiang
    Ying Ge
    Jie Chang
    [J]. Environmental Science and Pollution Research, 2023, 30 : 228 - 241
  • [34] New insights into the effects of wetland plants on nitrogen removal pathways in constructed wetlands with low C/N ratio wastewater: Contribution of partial denitrification-anammox
    Yao, Dongdong
    Dai, Na
    Hu, Xiaojin
    Cheng, Cheng
    Xie, Huijun
    Hu, Zhen
    Liang, Shuang
    Zhang, Jian
    [J]. WATER RESEARCH, 2023, 243
  • [35] Carbon slow-release and enhanced nitrogen removal performance of plant residue-based composite filler and ecological mechanisms in constructed wetland application
    Li, Zhaoyang
    Huang, Tianyin
    Wu, Wei
    Xu, Xiaoyi
    Wu, Bingdang
    Zhuang, Jinlong
    Yang, Jingjing
    Shi, Haochen
    Zhang, Yang
    Wang, Bin
    [J]. BIORESOURCE TECHNOLOGY, 2024, 402
  • [36] Study on the enhancement of low carbon-to-nitrogen ratio urban wastewater pollutant removal efficiency by adding sulfur electron acceptors
    Luo, Erming
    Ouyang, Jia
    Zhang, Xinxin
    Lu, Qian
    Wei, Dong
    Wang, Yongcheng
    Cha, Zhengjiong
    Ye, Chengwei
    Li, Chun ying
    Wei, Li
    [J]. PLOS ONE, 2024, 19 (10):
  • [37] Enhanced treatment of low-temperature and low carbon/nitrogen ratio wastewater by corncob-based fixed bed bioreactor coupled sequencing batch reactor
    Wang, Zhiming
    Zheng, Mengqi
    He, Chunhua
    Hu, Zhenhu
    Yu, Yipeng
    Wang, Wei
    [J]. BIORESOURCE TECHNOLOGY, 2022, 351
  • [38] Solid-Phase Fe(II)-Mediated Autotrophic Denitrification for Nitrate Removal from Wastewater with a Low Carbon-to-Nitrogen Ratio
    Wang, Li
    Zhao, Lianfang
    He, Li
    [J]. JOURNAL OF ENVIRONMENTAL ENGINEERING, 2020, 146 (07)
  • [39] Effect of the method of falling water aeration-reflux on nitrogen removal and applicability in a novel upflow microaerobic sludge reactor treating low carbon-to-nitrogen ratio wastewater
    Zhang, Xiao
    Zhao, Bowei
    Yue, Xiuping
    Li, Fusheng
    Kong, Xin
    Ma, Xiao
    Li, Hui
    [J]. BIORESOURCE TECHNOLOGY, 2019, 285
  • [40] Nitrogen and phosphorus removal in microbial fuel cell-constructed wetland integrated with layered double hydroxides coated filter for treating low carbon wastewater
    Tao, Mengni
    Jing, Zhaoqian
    Shen, Yiwei
    Cao, Shiwei
    Li, Yu-You
    [J]. JOURNAL OF WATER PROCESS ENGINEERING, 2025, 70