This study evaluates the long-term performance of a submerged anaerobic membrane bioreactor (SAnMBR) equipped with a hollow-fiber membrane for the treatment of synthetic industrial wastewater containing 2,4-dichlorophenol (2,4-DCP), a toxic and persistent phenolic compound. Operated continuously for 189 days at 36 ± 1 °C, the system demonstrated high and stable removal efficiencies, achieving a maximum removal of 99.63% for ch...