Abstract: To deal with the issue of water polluted by algae, organic matters and taste and odor in eutrophic water of lakes and reservoirs, a combined process of coagulation-sedimentation combined with biological powered activated carbon and submerged ultrafiltration(BPAC/SUF)was applied to study the removal effects of chlorophyll a, organic matters and taste and odor, and to investigate the membrane fouling characteristic of micro-polluted water sample with artificial taste and odor in lab-scale. The results show that remarkable removal rate of chlorophyll a could reach to 95.5%, and the organic matters' removal efficiency was obviously improved with the average removal rate of 31.0% for UV₂₅₄, 30.4% for DOC and 51.0% for COD_Mn, respectively. Better removal effect on 2-MIB and GSM were achieved with 74.8% and 75.1%, respectively. The average taste and odor level of treated water was below the threshold value. Membrane fouling was well controlled during the whole experimental period, and the trans-membrane pressure was increased only by 3.80 kPa.