A novel vertical immobilized photocatalytic membrane reactor based on Bi2WO6-g-C3N4/PVDF for enhanced removal of atrazine, anti-fouling performance and long-term stability

•Three flat-sheet immobilized photocatalytic membrane reactors (PMRs) based on Bi2WO6-g-C3N4/PVDF were constructed and compared.•A novel vertical PMR exhibited excellent photocatalytic removal performance.•Anti-fouling property of the PMR was analyzed by filtering bovine serum albumin (BSA), humic acid (HA) and sodium alginate (SA) and XDLVO theory.•PMR possessed superior long-term stability even after 6-cycles in 18 h continuous flow mode.•The atrazine's degradation pathway and its intermediates' toxicity were investigated.