Application of aerated submerged spongebed biofilter for raw water pre-treatment in drinking water installationMargareta Novia Asih Christami, Setyo Sarwanto Moersidik, El Khobar M Nazech and Yenny SilviaMATEC Web Conf., 270 (2019) 04008DOI: https://doi.org/10.1051/matecconf/201927004008