Abstract: Combining the research theory of biological aerated filter and constructed wetland,a new technology of artificially aerated integrated constructed wetland is developed to avoid such shortcomings of the traditional constructed wetland as low hydraulic loading,weak nitration capacity and easy clogging.This technology combines the processes of pre-treatment of bio-contact oxidation,artificially aerated vertical flow wetland and horizontal subsurface-flow wetland.This technology demonstrated excellent efficiency with enhanced capability of pollutant removing in an experiment on the north shore of Dianchi Lake in Yunnan Province.Results show that the artificially aerated integrated constructed wetland reflected a stronger buffering capacity and a higher purifying efficiency regardless of hydraulic load and pollution load.The total removal rate of SS,CODCr and NH3-N was as high as 94.5%,71.3% and 72.3%,respectively,and the total nitrogen removal rate was 41.9% when the inflow was 10.0 mg·L-1 in total N content,leaving 5.8 mg·L-1 of total N in the outflow.

Key words: artificial aeration, constructed wetland, remove efficiency