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Environmental Science and Pollution Research

, Volume 26, Issue 18, pp 18421–18433 | Cite as

Assessment of pollutant removal processes and kinetic modelling in vertical flow constructed wetlands at elevated pollutant loading

  • Manoj Kumar
  • Rajesh SinghEmail author
Research Article
  • 70 Downloads

Abstract

Constructed wetland (CW), an ecological wastewater treatment technology, is low cost and easily to operate. Vertical flow constructed wetland (VF-CW) systems have been used to treat various wastewaters across the world. The present work exhibits the detail study of five type’s multi-layered vertically constructed wetlands operated at 24 h hydraulic retention time under semi-continuous vertical flow mode. Except N-NO3, all the pollutants were sufficient removal in iron scraps constructed wetland (ISs-CW). The highest average pollutant removal efficiency achieved in ISs-CW was 85.04%, 77.57%, 85.99%, 62.01% and 88.91% for N-NH4+, N-NO2+, total nitrogen, total phosphate and sulphate respectively. The present CWs planted with Eichhornia crassipes is a promising system for municipal wastewater treatment. The first-order kinetic modelling was best suited for the removal rate since it presents higher R2, rate constant (k) and B values.

Keywords

Constructed wetlands Wastewater Iron scraps Bacterial consortium enrichment Eichhornia crassipes 

Notes

Acknowledgements

One of the authors Kumar M. is grateful to University Grants Commission (UGC), New Delhi for awarding NFSC Fellowship.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Environment and Sustainable DevelopmentCentral University of GujaratGandhinagarIndia

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