Efficiency of Heliconia psittacorum in the treatment of wastewater from Kimpa Vita University, Angola
Keywords:
Efficiency, Heliconia psittacorum, wastewater treatment, Kimpa Vita University.Abstract
This study focuses on the use of local macrophytes in the domestic wastewater treatment system, under a vertical flow regime, in a tropical climate. The main objective of the research focused on evaluating the purifying performance of Heliconia psittacorum, a local plant from the Northern Region of Angola, applied in the treatment of domestic wastewater, in peri-urban and rural areas (such as Kimpa Vita University), by filters planted with macrophytes. The experiment was carried out in two effluent retention periods in the pilot filtration system, and the statistical analysis indicated a significant difference (p > 0.05) in the quality of the filtrates between the 24-hour and 7-day retention periods for the five-day biochemical oxygen demand (BOD5), total suspended solids (TSS) and Kejeldahl total nitrogen (TKN), despite the visible difference in the theoretical removal rate of BOD5 and TKN in both periods. However, the nullity of the 24-hour effluent purification rate in total Coliforms, Echerichia Coli and Enterococci created a significant difference (p < 0.05) with the 7-day period, which implies that the improvement in filter efficiency depends on the greater contact time between the effluent and the microbial biomass. Furthermore, Heliconia has good hydraulic conductivity, due to the development of its roots and rhizomes, and allows it to withstand hydraulic overloads.
Downloads
References
Abbisy, M., & Mandi, L. (1999). Utilisation des plantes aquatiques enracinées pour le traitement des eaux usées urbaines: cas du roseau. In Revue de Sciences de l’eau, 12(2), 285–315. https://doi.org/10.7202/705353ar.
Achak, M., Ouazzani, N., & Mandi, L. (2011). Élimination des polluants organiques des effluents de l’industrie oléicole par combinaison d’un filtre à sable et un lit planté. In Revue des Sciences de l’eau, 24(1), 35–51. https://doi.org/10.7202/045826ar.
Alexandre, O., Boutin, C., Duchène, P., Lagrange, C., Lakel, A., Liénard, A., & Orditz, D. (1998). Filières d’épuration adaptées aux petites collectivités. In Cemagref Éditions (Ed.), Document technique FINDA n°22 (1ère).
Barszcz, L. B., Bellato, F. C., Benassi, R. F., & Matheus, D. R. (2019). Avaliação ecotoxicológica de efluentes tratados por alagados construídos ecotoxicological evaluation of effluents treated by constructed wetlands. In Researchgate, 24(6), 1147–1156. https://doi.org/10.1590/S1413-41522019184120.
Bourrier, R., Satin, M., & Selmi, B. (2017). Guide technique de l’assainissement. 5e ed. Paris : Édition Le Moniteur.
Boutin, C., Liénard, A., & Lesavre, J. (2000). Filières d’épuration pour petites collectivités: les cultures fixées sur supports Fins. In Ingenieries - EAT, IRSTEA, 24, 3–13.
Ciria, M. P., Solano, M. L., & Soriano, P. (2005). Role of macrophyte Typha latifolia in a constructed wetland for wastewater treatment and assessment of its potential as a biomass fuel. In Biosystems Engineering, 92(4), 535–544. https://doi.org/10.1016/j.biosystemseng.2005.08.007
Elizabeth, C. A. C., Paola, O., & Lariza, V. B. A. (2017). Proposal for treatment of fomestic wastewater implementing a subsuperficial flow artificial wetland employing Bambusa sp on the farm El recreo in Tauramena, Casanare. In Ingeniería En Recursos Hídricos, 1–12.
Eme, C. (2012). Traitement des eaux usées domestiques par filtres plantés de macrophytes - Adaptation de la filère au contexte tropical - État de l’art. In IRSTEA, Lyon. https://epnac.irstea.fr/wp-content/uploads/2016/10/DOM_Ttt-eaux-usées-par-FP-macrophytes_C.Eme_.pdf
Fidele, M. K., Mbungu, D. M., & Nzuzi, L. M. (2023). Eficiência das tábua larga (Typha latifolia) e Palmeira umbela (Cyperus alternifolius) no tratamento de águas residuais por leitos de macrófitas no Campus universitário Kimpa Vita. In Alba Revista. 1(2), 141–153.
...
