Shweta J Chauhan, Komal Makwana, Maharshi Patel, and Arav Gohel. 2017. “Sewage Treatment Plant (SBR Technology)”. International Journal of Advance Engineering and Research Development (IJAERD) 4 (3):536-41. https://www.ijaerd.org/index.php/IJAERD/article/view/2105.