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The combined processes as pilot scale were designed and used to treat micro polluted raw water. The combined processes were composed by sedimentation and DAF. The results showed that the combined processes could simultaneously remove turbidity，algae and CODMn were 80.4％,82.0％ and 24.1％ respectively，with the influent turbidity of 4.08-8.77NTU,algae of 3.5×107-9.9×107 cell/L，CODMn of 3.2-3.6mg/L.And the removal of ammonia-N，nitrate-nitrogen and TOC（total organic carbon) was limited. The combined processes could offer a safe drinking water of high quality.