Biogas Productivity as Renewable Energy and Performance of Waste Water Treatment in Tofu Small Scale Industry using an AnSBR ReactorSuparni Setyowati Rahayu, Totok Prasetyo, Purwanto Purwanto and Budiyono BudiyonoMATEC Web Conf., 156 (2018) 03049DOI: https://doi.org/10.1051/matecconf/201815603049