Study Of Treat Effect Of Eutrophicated Water By Imitation Artificial Floating Island

Several kinds of plant were planted with technology of soilless culture in a barrel and glass jar to treat eutrophicated water with still and dynamic condition.The results were as follows:(1) Six kinds of plant such as Juncus effusus, Scirpus tabernaemontani, Pontederia cordata, Phragmites australis, Typha orientalis Presl, Acorus calamus var. were selected in the still eutrophicated water at the same time.The rusults showed that three plants such as Juncus effusus, Scirpus tabernaemontani, Pontederia cordata were suitable for artificial floating island according to the plant growth and the survival rate of plants.(2) In still water, the treat effects of eutrophicated water were better by Pontederia cordata plant artificial floating island than other single plant artificial floating island, and the removal rate of TN、TP、COD were48.95%、27.78%、38.04%respectively; the treat effects of eutrophicated water were better by Pontederia cordata and Juncus effusus(1:1) artificial floating island than other two plant(1:1) artificial floating island, and removal rate of TN、TP、COD were55.23%.37.70%,47.96%respectively;the the minimum removal rate of TN、TP、COD in eutrophicated water treated by artificial floating island with the different proportion of hybrid plants were57.33%、39.29%、49.24%respectively.the treat effects of eutrophicated water were best by artificial floating island with Pontederia cordata, Juncus effuses, Scirpus tabernaemontani (composition of which is3:2:1) than other plant one,and he best removal rates of TN、TP、COD were65.06%、48.81%、58.11%respectively.the treat effects of eutrophicated water were better by artificial floating island with different proportion of hybrid plants than other single plant artificial floating island. It has obvious to improve the transparency of water body by artificial floating island with different proportion of hybrid plants. The plant on the artificial floating island grow well. (3) In dynamic water, the treat effects of eutrophicated water were good by artificial floating island with different proportion of hybrid plants. The minimum removal rate of TN、TP、COD of eutrophicated water treated by artificial floating island with the different proportion of hybrid plants such as Pontederia cordata, Juncus effuses, Scirpus tabernaemontani (composition of which is3:2:1) were40.34%、34.46%、36.19%respectively; the treat effects of eutrophicated water were best by artificial floating island with Pontederia cordata, Juncus effuses, Scirpus tabernaemontani (composition of which is3:2:1) than other plant one,and he best removal rates of TN、TP、COD were52.65%、40.82%、43.55%respectively.