Algal　blooms　threaten　the　performance　of　ultrafiltration　(UF)　in　drinking　water　treatment;　the　hybrid　process　of　powdered　activated　carbon　and　ultrafiltration　(PAC/UF)　process　was　evaluated　for　treating　algal-rich　water.　Microcystin-LR　(MC-LR)　removal　and　fouling　characteristics　were　conducted　and　compared　with　the　parallel　UF.　The　results　indicate　that　the　PAC/UF　process　could　achieve　complete　removal　of　algal　cells,　and　significantly　enhanced　the　removal　of　MC-LR　compared　with　the　parallel　UF.　Moreover,　PAC/UF　process　could　mitigate　membrane　fouling　of　algal-rich　water,　which　was　somewhat　owing　to　the　lower　concentration　of　protein-like　substances　in　extracellular　polymer　substances　(EPSs)　of　membrane　pools.　The　microscopic　observation　demonstrated　that　the　cake　layer　of　the　PAC/UF　process　was　much　thinner　and　showed　less　polysaccharides　distributed　in　it.　In　a　word,　PAC/UF　is　feasible　in　treating　algal-rich　water.　(C)　2014　Elsevier　B.V.　All　rights　reserved.