Comparative evaluation of biofilters using Eisenia foetida and Lumbricus terrestris for nitrogen and phosphorus removal in domestic wastewater under Andean climate conditions
Article Sidebar
Main Article Content
Abstract
The performance of biofilters using Eisenia foetida and Lumbricus terrestris was evaluated for nitrogen (N) and phosphorus (P) removal from domestic wastewater under Andean climate conditions. The study was conducted at pilot scale using two parallel treatment units with a design flow rate of 0.30 m³/day per system. The system response (R) was defined as removal efficiency based on the ratio between influent and effluent concentrations. Monitoring was carried out over seven sampling campaigns from October 2019 to January 2020. Results showed that E. foetida achieved 40.38% phosphorus removal, while L. terrestris reached 33.97%. Nitrogen removal efficiencies were 33.70% and 35.09%, respectively. Statistical analysis using Student’s t-test indicated significant differences only for phosphorus (p=0.028), while no significant differences were observed for nitrogen (p=0.524). It is concluded that E. foetida is more efficient for phosphorus removal, while nitrogen removal is mainly influenced by hydraulic conditions.
Article Details
Section
This work is licensed under a Creative Commons Attribution 4.0 International License.
How to Cite
References
Bobadilla, C., Bornhardt, C., y Monj, F. 2003. “Tratamiento de RILES mediante lombrifiltro.” XV Congreso de Ingeniería Sanitaria y Ambiental (AIDIS-Chile): 4–5.
Edgardo, A. M., y Jhonatan, R. S. 2017. “Eficiencia de Lumbricus terrestris y Eisenia foetida en un lombrifiltro para remoción de nutrientes en aguas residuales domésticas, Bagua (Perú).”
Eileen, A. L. 2003. Evaluación ambiental del sistema Tohá en la remoción de Salmonella en aguas servidas domésticas. Tesis de Maestría, Universidad de Santiago, Chile.
Espinosa Rodríguez, M., Ruiz Sánchez, T., Hidalgo Millán, A., y Delgado Delgado, R. 2018. “Efecto de la carga hidráulica de un filtro percolador en el proceso de nitrificación.” Revista Mexicana de Ingeniería Química 18: 113.
Metcalf & Eddy, Inc. 1995. Ingeniería de aguas residuales: tratamiento, vertido y reutilización. 3.ª ed. Madrid: McGraw-Hill.
Platzer, M., Cáceres, V., y Fong, N. 2002. “Investigaciones y experiencias con biofiltros en Nicaragua, Centro América.” AIDIS.
Romero Rojas, J. 2000. Tratamiento de aguas residuales: teoría y principios de diseño. Bogotá: Escuela Colombiana de Ingeniería.
Universidad de Salamanca. 2003. Aula Virtual. http://aulavirtual.usal.es/
Vidal, C. 2013. Tecnologías emergentes y no convencionales. https://fch.cl/