Advantages of partial denitrification–anaerobic ammonium oxidation system under sulfamethoxazole stress: Adaptive mechanisms and synergistic metabolism - Jiantao Ji; Qiyue Wang; Feiyue Hu; Haosen Yang; Ying Li; Guanqi Wu; Yongen Dong; Jinying Du; Huiru Li; Bo Shen; Bo Wang (Bioresource Technology, 2026)