The aquatic plant (Ipomoea aquatica)

aquatic animal (filter feeding Hyriopsis cumingii)

artificial medium for an integrated ecological floating bed (IEFB) were combined

and the contaminant removal rates contributed by different biological units were analyzed. It is shown that

the artificial medium (microorganism) unit acted as the main role of purification of IEFB with approximately 48.5%

46.7%

and 49.9% of TN

TP and CODMn removed from the water

respectively

much higher than that of aquatic plant unit and aquatic animal unit. Furthermore

the contribution of aquatic animal unit for chlorophyll a removal was 79.1%

which means that the particulate organic matters filter fed by the Hyriopsis cumingii is the main contaminations removal way of aquatic unit. The filter feeding and ammonia emission effect of the Hyriopsis cumingii promotes the solubilization and mineralization of particulate organic matters

which provides advantaged substance condition for the microorganism attached to the artificial medium of IEFB

and resulting in promoting the purification efficiency of the floating bed.