Efficiency of Indonesian Degradation Products in Treating Septic Tank Faecal SludgeWidhowati Kesoema Wardhani, Harmin Sulistiyaning Titah, Mas Agus Mardyanto and Eddy Setiadi SoedjonoE3S Web Conf., 557 (2024) 02007DOI: https://doi.org/10.1051/e3sconf/202455702007