Article
Environmental Sciences
F. Djodjic, P. Geranmayeh, D. Collentine, H. Markensten, M. Futter
Summary: This study assessed the cost-efficiency of 233 constructed wetlands in two regions of Sweden using a three-step modelling approach. The results showed that many constructed wetlands had low nutrient retention due to their suboptimal location in catchments, leading to low cost-efficiency. Some high cost-efficiency wetlands were identified, but further guidance and instructions are needed to improve their cost-efficiency.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Hu Wu, Jie Wang, Jieyu Chen, Xiaoning Wang, Dapeng Li, Jie Hou, Xugang He
Summary: The novel simultaneous nitrogen and phosphorus removal process combines nitrification, endogenous denitrification, and denitrifying phosphorus removal to achieve high-efficiency nutrient removal in constructed wetlands. The success of the process is attributed to the utilization of DGAOs and DPAOs in utilizing carbon sources for endogenous denitrification and denitrifying phosphorus removal.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Sijia Jiang, Jianling Xu, Hanxi Wang, Xinyu Wang
Summary: The study investigated the effects of using pyrite and alkali-modified rice husk as substrates for nitrogen and phosphorus removal in constructed wetlands. The results showed that alkali-modified rice husk had more advantages and could be used for low C/N ratio wastewater treatment. Additionally, the tidal flow mode enhanced nitrification and ammonium nitrogen removal rates, although the increase in dissolved oxygen was not sufficient to meet system requirements.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
A. Y. A. Mohamed, A. Siggins, M. G. Healy, D. O. HUallachain, O. Fenton, P. Tuohy
Summary: Constructed wetlands are cost-effective and sustainable treatment technology for dairy wastewater, but they require large area and have poor phosphorus removal. This study uses a novel coagulation-sedimentation process prior to loading wetlands, which achieves high removal efficiencies and complies with EU directives.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
George Pavlidis, Ioanna Zotou, Helen Karasali, Anna Marousopoulou, Georgios Bariamis, Ioannis Nalbantis, Vassilios A. A. Tsihrintzis
Summary: The efficiency of constructed floating wetlands (CFWs) in removing agrochemicals has been investigated in this study. The results demonstrate that CFW systems are effective and cost-efficient in removing nutrients and pesticides from agrochemical wastewater, highlighting their potential as pollution control technologies.
Article
Green & Sustainable Science & Technology
Xiaojin Hu, Xiaodong Wan, Wei Tan, Huijun Xie, Linlan Zhuang, Jian Zhang, Shuang Liang, Zhen Hu
Summary: Iron oxides can nourish iron reducing bacteria and increase available electrons in constructed wetland systems. The addition of limonite improved nitrogen removal efficiency but excessive addition may induce phosphorus release. The study highlights the importance of balancing iron cycling for improved nutrient removal in wetlands.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Shuhang Wang, Haoran Yang, Feifei Che, Wei Huang, Dianhai Yang
Summary: This study investigated rural domestic sewage treatment facilities in two urban areas in Jiaxing and found high concentrations of total phosphorus and ammonia nitrogen in the plain river network. A new synthetic filler (FA-SFe) was selected to enhance nitrogen and phosphorus reduction in constructed wetlands, highlighting the importance of fillers. Experiments showed the high adsorption capacity of FA-SFe, with removal rates of ammonia nitrogen and total phosphorus reaching 71.3% and 62.7% respectively in actual wastewater treatment.
FRONTIERS IN CHEMISTRY
(2023)
Article
Engineering, Environmental
M. Sanchez, I. Ruiz, M. Soto
Summary: Constructed wetlands are a promising decentralised wastewater treatment technology that is suitable for single-family homes, rural or peri-urban areas, and low-income areas. This study combines a new anaerobic/anoxic digester with a vertical subsurface constructed wetland for the first time, achieving high overall removal efficiency of organic matter and nitrogen.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Tongtong Zhou, Jiangong Liu, Zhiyang Lie, Derrick Y. F. Lai
Summary: This study investigated the effects of different carbon substrates on the treatment efficiency of hydroponic wastewater using vertical flow constructed wetlands. The addition of sucrose and common reed litter improved the removal of nitrogen and phosphate, and the common reed litter also reduced the emission of greenhouse gases.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Yinjin Zeng, Weibin Xu, Han Wang, Dan Zhao, Hui Ding
Summary: In wastewater treatment, micro-polluted water can be effectively treated using suitable substrates and autotrophic denitrifying bacteria. In this study, the self-assembled composite material (PSM) showed the most remarkable nitrogen and phosphorus removal performance among different substrates. By establishing accurate models, we can simulate the denitrification processes and nitrate nitrogen removal in vertical flow constructed wetland (VFCWs).
Article
Engineering, Environmental
Jie Wang, Ling Xia, Jieyu Chen, Xiaoning Wang, Hu Wu, Dapeng Li, George F. Wells, Jun Yang, Jie Hou, Xugang He
Summary: This study demonstrated the feasibility of achieving phosphorus removal through enhanced biological phosphorus removal (EBPR) in an intermittent aeration constructed wetland (CW). The integration of EBPR with simultaneous nitrification-endogenous denitrification (SNED) significantly improved phosphorus and nitrogen removal efficiency, providing a novel approach for advanced nutrient removal in CWs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
Jingyao Zhang, Yuanchun Zou, Xiaofei Yu, Shanshan Ding, Jiawen Yan, Yongen Min
Summary: Steel slag substrate constructed wetlands (SSCWs) can effectively remove phosphorus from sewage through Ca-P precipitation and adsorption. Combining steel slag with other substrate materials in SSCWs significantly increased the removal of total nitrogen and ammonium nitrogen, but reduced the removal of total phosphorus. Plant cultivation can compensate for the decline in phosphorus removal and improve the simultaneous removal of nitrogen and phosphorus. Horizontal flow SSCWs achieve higher phosphorus removal capacity compared to vertical flow SSCWs. Operational parameters significantly affect the nitrogen and phosphorus removal capacity of SSCWs.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Jih Ming Chyan, Chien Jung Lin, Mu Jin Yu, Ruei-Feng Shiu, Da Ji Huang, Chien Sa Lin, Delia B. Senoro
Summary: This study found that using naturally aged incineration bottom ash as an alternative substrate for HSSF constructed wetlands can effectively remove BOD and nitrogen species, and significantly increase the removal rate of total phosphorus.
Article
Ecology
Yumei Luo, Quan Chen, Fan Liu, Can Dai
Summary: This study found that the diversity of plant communities in constructed wetlands is closely related to plant growth and nutrient removal capacity. Plant communities with diverse growth forms showed higher removal capacity for nitrogen and phosphorus, while monocultures or combinations of the same type of plant did not perform as well. Plant roots played a crucial role in nutrient consumption. Large plants showed a greater increase in biomass in polyculture environments, which greatly enhanced the absorption and assimilation of nitrogen and phosphorus.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Sciences
Junyu Huo, Xiaojin Hu, Shiyi Cheng, Huijun Xie, Zhen Hu, Haiming Wu, Shuang Liang
Summary: This study found that biochar, zeolite, and pyrite were more effective substrates compared to traditional gravel for improving nitrogen removal efficiency and reducing N2O emissions in constructed wetlands.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Xiao Zha, Jun Ma, Xiwu Lu
JOURNAL OF CLEANER PRODUCTION
(2018)
Article
Environmental Sciences
Tsapekos Panagiotis, Khoshnevisan Benyamin, Zhu Xinyu, Zha Xiao, Angelidaki Irini
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Environmental Sciences
Xiao Zha, Jun Ma, Panagiotis Tsapekos, Xiwu Lu
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Environmental Sciences
Xiao Zha, Jun Ma, Xiwu Lu
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Engineering, Environmental
Xiao Zha, Panagiotis Tsapekos, Merlin Alvarado-Morales, Xiwu Lu, Irini Angelidaki
