Performance evaluation and upgrade options for existing sequencing batch reactor for nutrient removalJahziel Lantin, Jeremy Ynnos Abenoja, Jason Ly, Cheenee Marie Castillones, Arnel Beltran and Aileen OrbecidoMATEC Web Conf., 268 (2019) 06007DOI: https://doi.org/10.1051/matecconf/201926806007