Integration of partial nitrification, endogenous denitrification and anaerobic ammonia oxidation in low dissolved oxygen anaerobic/oxic/anoxic-aerobic granular sludge reactor treating low carbon to nitrogen ratios wastewater - Jingwei Ma; Long Chen; Yaning Ji; Hui Sun; Ying Han; Liang Zhu; Peng Bi; Qiulai He (Bioresource Technology, 2025)