Perfluoroalkyl and polyfluoroalkyl substances removal in a full-scale tropical constructed wetland system treating landfill leachate

2017 ◽  
Vol 125 ◽  
pp. 418-426 ◽  
Author(s):  
Tingru Yin ◽  
Huiting Chen ◽  
Martin Reinhard ◽  
Xinzhu Yi ◽  
Yiliang He ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Landfill Leachate ◽  
Full Scale ◽  
Polyfluoroalkyl Substances ◽  
Wetland System ◽  
Perfluoroalkyl And Polyfluoroalkyl Substances

Seasonal and annual performance of a full-scale constructed wetland system for sewage treatment in China

2006 ◽  
Vol 26 (3) ◽  
pp. 272-282 ◽  
Author(s):  
Zhiwen Song ◽  
Zhaopei Zheng ◽  
Jie Li ◽  
Xianfeng Sun ◽  
Xiaoyuan Han ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Sewage Treatment ◽  
Full Scale ◽  
Wetland System

scholarly journals Emerging organic contaminant removal in a full-scale hybrid constructed wetland system for wastewater treatment and reuse

2015 ◽  
Vol 80 ◽  
pp. 108-116 ◽  
Author(s):  
Cristina Ávila ◽  
Josep M. Bayona ◽  
Isabel Martín ◽  
Juan José Salas ◽  
Joan García
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Organic Contaminant ◽  
Full Scale ◽  
Contaminant Removal ◽  
Wetland System

scholarly journals Co-treatment of landfill leachate and municipal wastewater using the ZELIAC/zeolite constructed wetland system

2016 ◽  
Vol 166 ◽  
pp. 124-130 ◽  
Author(s):  
Amin Mojiri ◽  
Lou Ziyang ◽  
Ramlah Mohd Tajuddin ◽  
Hossein Farraji ◽  
Nafiseh Alifar
Keyword(s):  
Constructed Wetland ◽  
Landfill Leachate ◽  
Municipal Wastewater ◽  
Wetland System

scholarly journals Impacting Microbial Communities and Absorbing Pollutants by Canna Indica and Cyperus Alternifolius in a Full-Scale Constructed Wetland System

2019 ◽  
Vol 16 (5) ◽  
pp. 802 ◽  
Author(s):  
Yinghai Wu ◽  
Tao He ◽  
Chen Chen ◽  
Xiaohang Fang ◽  
Dongyang Wei ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Plant Species ◽  
Nitrogen Removal ◽  
Constructed Wetland ◽  
Full Scale ◽  
Canna Indica ◽  
Subsurface Flow Constructed Wetland ◽  
Wetland System ◽  
Cyperus Alternifolius ◽  
Rhizosphere Sediment

Wetland plants that cover the wetlands play an important role in reducing pollutants. The aim of this study was to investigate the effect of two plant species on microbial communities and nitrogen-removal genes and to evaluate the contributions of absorbing pollutants by Canna indica (CI) and Cyperus alternifolius (CA) to the removal performance in both a vertical subsurface flow constructed wetland and a horizontal subsurface flow constructed wetland, which were part of a full-scale hybrid constructed wetland system. The microbial assemblages were determined using 16S rRNA high-throughput sequencing. Results showed that the presence of CI and CA positively affected microbial abundance and community in general and which was positive for the total bacteria and ammonia nitrogen removal in the CWs. The higher abundance of Nitrospirae appeared in the non-rhizosphere sediment (NRS) than that in the rhizosphere sediment (RS). More denitrification genes were found in NRS than in RS. The copy numbers of narG, nirS and nosZ genes for CA were higher than those for CI. Wetland plant species can significantly (P < 0.05) affect the distribution of microbial communities in RS. Plant selection is important to promote the development of microbial communities with a more active and diverse catabolic capability and the contribution of plant absorption to the overall removal rate of wetland system can be neglected.

scholarly journals Metal and metalloid sequestration in a constructed wetland system for treatment of landfill leachate during 2003-2012

2017 ◽  
Author(s):  
Sylvia Waara ◽  
Tatsiana Bandaruk
Keyword(s):  
Removal Efficiency ◽  
Constructed Wetland ◽  
Landfill Leachate ◽  
Large Data ◽  
Sediment Traps ◽  
Data Set ◽  
Metals And Metalloids ◽  
Study Results ◽  
Wetland System ◽  
Using Data

The treatment of landfill leachate in constructed wetland systems is a common practice in Europe. However, very few studies were made to evaluate their performance over a long period of time. A free surface constructed wetland system consisting of sediment traps followed by 10 ponds connected with overflows was built at Atleverket near Örebro, Sweden in 2001. It receives pre-treated leachate from the municipal landfill. As part of the wetland monitoring programme a large data set on the surface concentrations of 15 metals and 2 metalloids has been collected from different sampling sites within the wetland during the operation period. In this study, the data from inlet and outlet of the wetland were compiled and analysed. The aim of this paper is therefore to estimate the removal efficiency of metals and metalloids using data on concentrations and flow and investigate the effect of wetland age on removal pattern. The elements with the highest removal efficiency were Al, As, Ba, Ca, Cr, Cu, Fe, Mn, Pb, V and Zn ranging from 95% for Pb to 65 % for Ca. The elements with the lowest reduction were B, Co K, Mg, Ni and S ranging from Co 56 % to 40 % for S. It was found that the removal efficiency was not related to inlet concentrations of the elements as the elements with high and low inlet concentrations were found in both groups. Analysis of reduction pattern also revealed that the group with higher removal efficiency showed fairly constant outlet concentrations during the study period, while the elements with lower removal efficiency demonstrated variable outlet concentrations. No statistical difference in removal due to age of the wetland was found. The study results showed that the wetland system has high removal efficiency of metals and metalloids and the removal pattern is not affected by age of the wetland. The influence on reduction due to leachate characteristics, wetland design and retention time will be discussed.

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