Volume 23, Issue 4, July 2018, Pages 575–582
Jean-Marie Pétémanagnan Ouattara1, Béatrice Assamoi Ama-Cauphys2, and Lacina Coulibaly3
1 Laboratoire d’Environnement et Biologie Aquatique, UFR-Sciences et Gestion de l’Environnement, Université NANGUI ABROGOUA, 02 BP 801 Abidjan 02, Côte d’Ivoire
2 Laboratoire d’Environnement et Biologie Aquatique, UFR-Sciences et Gestion de l’Environnement, Université NANGUI ABROGOUA, 02 BP 801 Abidjan 02, Côte d’Ivoire
3 Unité de recherche en Biotechnologie et Ingénierie de l'Environnement, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire
Original language: English
Copyright © 2018 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Plant density may have an influence on constructed wetlands (CWs) operation. In this study, the effect of plant density on the efficiency of vertical-flow CWs planted with Panicum maximum treating domestic wastewater was investigated. Two beds were planted with P. maximum at 10 plants/m2 (low density) and two others at 20 plants/m2 (high density). Two unplanted beds were used as control. During six months, domestic (0.05m3) raw wastewater was applied on each bed intermittently. Wastewater samples were taken once a week into the influent and the filtrate of each bed and preserved at 4°C until analysis. The results showed that pollutants were significantly more removed in the planted beds than in the controls. But, the plant densities used were not significantly impact the treatment efficiency. However, the bed planted at low density was clearly distinguished as the one that provided the higher pollutants removal rates (TSS = 91.8%, DCO = 91.6%, P = 69%, PO43- = 74.9%, NTK = 86.5%, NH4+ = 86.5%, Escherichia coli = 87.1%, Clostridium perfringens = 96.7%).
Author Keywords: Constructed wetlands, Panicum maximum, plant density, wastewater treatment.
Jean-Marie Pétémanagnan Ouattara1, Béatrice Assamoi Ama-Cauphys2, and Lacina Coulibaly3
1 Laboratoire d’Environnement et Biologie Aquatique, UFR-Sciences et Gestion de l’Environnement, Université NANGUI ABROGOUA, 02 BP 801 Abidjan 02, Côte d’Ivoire
2 Laboratoire d’Environnement et Biologie Aquatique, UFR-Sciences et Gestion de l’Environnement, Université NANGUI ABROGOUA, 02 BP 801 Abidjan 02, Côte d’Ivoire
3 Unité de recherche en Biotechnologie et Ingénierie de l'Environnement, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire
Original language: English
Copyright © 2018 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Plant density may have an influence on constructed wetlands (CWs) operation. In this study, the effect of plant density on the efficiency of vertical-flow CWs planted with Panicum maximum treating domestic wastewater was investigated. Two beds were planted with P. maximum at 10 plants/m2 (low density) and two others at 20 plants/m2 (high density). Two unplanted beds were used as control. During six months, domestic (0.05m3) raw wastewater was applied on each bed intermittently. Wastewater samples were taken once a week into the influent and the filtrate of each bed and preserved at 4°C until analysis. The results showed that pollutants were significantly more removed in the planted beds than in the controls. But, the plant densities used were not significantly impact the treatment efficiency. However, the bed planted at low density was clearly distinguished as the one that provided the higher pollutants removal rates (TSS = 91.8%, DCO = 91.6%, P = 69%, PO43- = 74.9%, NTK = 86.5%, NH4+ = 86.5%, Escherichia coli = 87.1%, Clostridium perfringens = 96.7%).
Author Keywords: Constructed wetlands, Panicum maximum, plant density, wastewater treatment.
How to Cite this Article
Jean-Marie Pétémanagnan Ouattara, Béatrice Assamoi Ama-Cauphys, and Lacina Coulibaly, “Panicum maximum density effect upon the efficiency of pilot-scale vertical flow constructed wetlands treating domestic wastewater,” International Journal of Innovation and Applied Studies, vol. 23, no. 4, pp. 575–582, July 2018.
