The　hybrid　process　of　biological　activated　carbon　(BAC)　and　submerged　membrane　bioreactor　(sMBR)　was　evaluated　for　the　drinking　water　treatment　from　polluted　raw　water,　with　the　respective　hydraulic　retention　time　of　0.5　h.　The　results　confirmed　the　synergetic　effects　between　the　BAC　and　the　subsequent　sMBR.　A　moderate　amount　of　ammonium　(54.5%)　was　decreased　in　the　BAC;　while　the　total　removal　efficiency　was　increased　to　89.8%　after　the　further　treatment　by　the　sMBR.　In　the　hybrid　process,　adsorption　of　granular　activated　carbon　(in　BAC),　two　stages　of　biodegradation　(in　BAC　and　WEIR),　and　separation　by　the　membrane　(in　sMBR)　jointly　contributed　to　the　removal　of　organic　matter.　As　a　result,　the　hybrid　process　managed　to　eliminate　influent　DOC,　UV254,　CODMn,　TOC,　BDOC　and　AOC　by　26.3%,　29.9%,　22.8%,　27.8%,　57.2%　and　49.3%,　respectively.　Due　to　the　pre-treatment　effect　of　BAC,　the　membrane　fouling　in　the　downstream　sMBR　was　substantially　mitigated.　(C)　2009　Elsevier　Ltd.　All　rights　reserved.