Correlating microbial community with physicochemical indices and structures of a full-scale integrated constructed wetland system

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.

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Optimization of Chlorpyrifos Degradation Conditions for and Microbial Community Structure Analysis in a Constructed Wetland System

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/330/3/032077 ◽

2019 ◽

Vol 330 ◽

pp. 032077

Author(s):

Wang Yanji ◽

Jiang Songhe ◽

Piao Wenhua ◽

Jin Mingji ◽

Liang Yunjiang

Keyword(s):

Community Structure ◽

Microbial Community ◽

Structure Analysis ◽

Constructed Wetland ◽

Microbial Community Structure ◽

Wetland System

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Groundwater Quality Impacts from a Full-Scale Integrated Constructed Wetland

Groundwater Monitoring & Remediation ◽

10.1111/gwmr.12059 ◽

2014 ◽

Vol 34 (3) ◽

pp. 51-64 ◽

Cited By ~ 8

Author(s):

Mawuli Dzakpasu ◽

Miklas Scholz ◽

Rory Harrington ◽

Valerie McCarthy ◽

Siobhán Jordan

Keyword(s):

Groundwater Quality ◽

Constructed Wetland ◽

Full Scale ◽

Integrated Constructed Wetland

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Integrated Constructed Wetland (ICW) System a Sustainable Novel Technique for Urban Wastewater Management

10.21203/rs.3.rs-560094/v1 ◽

2021 ◽

Author(s):

Jeyaraman Sethuraman Sudarsan ◽

Ramasamy Annadurai ◽

Subramanian Nithiyanantham

Keyword(s):

Constructed Wetland ◽

Typha Latifolia ◽

Oxygen Demand ◽

Impurity Level ◽

Wastewater Management ◽

System A ◽

Reduction Efficiency ◽

Integrated Constructed Wetland ◽

Wetland System ◽

One Year

Abstract The present study focuses on various aspects of Integrated Constructed Wetland System (ICW) systems with reference to its efficiency, and eco-friendliness in the treatment of domesticwastewater. The biological oxygen demand (BOD) impurity level is in the ranged from 383 mgl-1 to 248 mgl-1, chemical oxygen demand (COD)420 mgl-1 to 340 mgl-1, Total Phosphorus (TP) 10.2 mgl-1 to 5 mgl-1 and Total Nitrogen (TN) 18.9 mgl-1 to 14.8 mgl-1 respectively over a period of one year (SRM University). The influent contaminants are degradable in nature especially with high TP and TN concentrations. Six units of Constructed Wetland System (ICW)units are built with uniform dimensions of 2×1× 0.9 m based on EPA and TVA.The wetland plants chosen areTypha Latifolia and Phragmites Australis. Among the wetland units, Typha oriented units are observed to perform better with a reduction efficiency of 87% for BOD, 86% for COD, 70% for TP and 78% for TN proving that Typha Latifoliais a better aquatic plant for overall wastewater treatment. The removal efficiency increases with time and reaches maximum in 192 hrs. To substantiate the experimental study output, Statistical analysis (ANOVA) and multiple regression analysis with normality plot has carried out. It isevident that thepercentage removal of many parameters especially organic parameters over a period of time in treating with different wetland units is highly significant.

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