OPTIMIZING LOW-COST BIOFILTER-BASED WASTEWATER TREATMENT SYSTEMS FOR SMALL COMMUNITIES. Journal of Engineering Education and Practice, [S. l.], v. 4, n. 01, p. 41–54, 2026. Disponível em: https://journaleep.com/index.php/JEEP/article/view/41. Acesso em: 7 jul. 2026.