Suyasa, I. W. B.; Wiguna Sudiartha, G. A. Development of Active Solids Activator (Pellet) Using Local Culture from Badung River, Bali to Enhance Nitrification Process of Goat Wastewater. Int. J. Adv. Sci. Eng. Inf. Technol. 2021, 11, 2160-2166.