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Tannery wastewater, rich in organic matter, chromium, and salts, presents significant treatment challenges. This study evaluates the effectiveness of Floating Treatment Wetlands (FTWs) as an eco-friendly and low-cost alternative to conventional treatment methods. Three plant species Zizania aquatica, Rosa indica, and Canna indica were tested individually and in combination over varying hydraulic retention times (HRTs) to assess pollutant removal efficiency. The FTW systems demonstrated up to 78% COD, 82% BOD, 69% total nitrogen, 74% total phosphorus, and 91% chromium removal, with Zizania aquatica and Canna indica outperforming Rosa indica in chromium uptake. The combination series exhibited synergistic effects, particularly in nutrient removal. This study highlights the potential of terrestrial plants in FTW systems for treating high-strength industrial effluents, providing a scalable solution for tannery wastewater remediation in developing regions.

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Potential of Aquatic Plants in Floating Wetland for Tannery Effluent Treatment: A Sustainable Approach

  • 会议论文

  • 发表日期：

    2025年

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  • A. Jeevika,
  • R. Sathyanathan,
  • D. Arivukkarasu,
  • P. T. Ravichandran

摘要

Tannery wastewater, rich in organic matter, chromium, and salts, presents significant treatment challenges. This study evaluates the effectiveness of Floating Treatment Wetlands (FTWs) as an eco-friendly and low-cost alternative to conventional treatment methods. Three plant species Zizania aquatica, Rosa indica, and Canna indica were tested individually and in combination over varying hydraulic retention times (HRTs) to assess pollutant removal efficiency. The FTW systems demonstrated up to 78% COD, 82% BOD, 69% total nitrogen, 74% total phosphorus, and 91% chromium removal, with Zizania aquatica and Canna indica outperforming Rosa indica in chromium uptake. The combination series exhibited synergistic effects, particularly in nutrient removal. This study highlights the potential of terrestrial plants in FTW systems for treating high-strength industrial effluents, providing a scalable solution for tannery wastewater remediation in developing regions.