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Treatment of High Nutrient-Loaded Wastewater in a Constructed Floating Wetland with Different Configurations: Role of Lantana Biochar Addition

Author

Listed:
  • Preeti Parihar

    (School of Environment & Natural Resources, Doon University, Dehradun 248001, India)

  • Naveen Chand

    (Environmental Engineering Research Group, National Institute of Technology Delhi, New Delhi 110040, India)

  • Surindra Suthar

    (School of Environment & Natural Resources, Doon University, Dehradun 248001, India)

Abstract

Constructed wetlands (CW) with carbon stock in substrate matrix show high efficiency in wastewater nutrient removals. In this study, five batch-scale CW setups with varying Lantana weed biochar (BC) doses (5, 10, and 15%) in substrate matrix were established and changes in high nutrient-loaded wastewater parameters, ammonium N (NH 4 + -N), chemical oxygen demand (COD), nitrate (NO 3 -N), sulfate (SO 4 −2 ), and phosphate (PO 4 −3 ), were monitored for 240 h hydraulic retention time (HRT). BC amount directly affected the removal mechanism of CWs and a significant reduction in COD (>92.71%) was recorded. CW setup with a 15% BC dose showed the maximum removal of PO 4 −3 (79.06%), NH 4 + -N (78.79%), SO 4 −2 (67.93%), and NO 3 -N (77.42%) from wastewater. The theory of BC facilitated physical removal, microbial facilitation, and chemical kinetics improvements are proposed for better removal of wastewater nutrients in studied CWs. Research results could be utilized to design a low-cost domestic wastewater treatment facility using BC for rural areas under a decentralized water treatment program.

Suggested Citation

  • Preeti Parihar & Naveen Chand & Surindra Suthar, 2022. "Treatment of High Nutrient-Loaded Wastewater in a Constructed Floating Wetland with Different Configurations: Role of Lantana Biochar Addition," Sustainability, MDPI, vol. 14(23), pages 1-12, December.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:23:p:16049-:d:990247
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    References listed on IDEAS

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    1. Shafaqat Ali & Zohaib Abbas & Muhammad Rizwan & Ihsan Elahi Zaheer & İlkay Yavaş & Aydın Ünay & Mohamed M. Abdel-DAIM & May Bin-Jumah & Mirza Hasanuzzaman & Dimitris Kalderis, 2020. "Application of Floating Aquatic Plants in Phytoremediation of Heavy Metals Polluted Water: A Review," Sustainability, MDPI, vol. 12(5), pages 1-33, March.
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