“Analisis Efektifitas Instalasi Pengolahan Air Limbah (IPAL) Komunal Dengan Biofilter Anaerobik”, ije, vol. 4, no. 1, pp. 1–10, Jan. 2024, Accessed: Mar. 18, 2026. [Online]. Available: https://ejournal.ununtb.ac.id/index.php/ije/article/view/565