Abstract
We constructed a combinant landscape constructed wetland for sewage treatment based on landscape plants in this study. The results are summerized as follows: the system uses model as: A(biological pretreatment pond)-B(biochemistry pond)- C(subsurface flow wetland)-D(surface flow wetland)-E(the third level vertical-flow wetland)-F(second-level vertical-flow wetland) -G(landscape surface flow wetland)-H(biology pond), this combination craft sewage treatment is performed effectively, and the system outcome water quality achieves the first-level A standard. In this system, through plant's screening, we found out the nearly 30 plants fitted the system with high compatibility, strong purification, high landscape value and high economic value, which were Mainly: Cannaindica, Iris ensata, Acoruscalamus, Iris tectorum, Iris germanica, Thalia dealbata, Cyperus alternifolius, Juncus effusus, Pontederia cordata, Phragmites austral is, Pennisetum purpureum, Paulownia tomentosa, Ipomoea aquatica, Zephyranthes candida, Liriope spicata, Lolium perenn, Oenanthe clecumbens, Trifolium, Reineckiacarnea, Cuphea ignea, Salix babylonica, Fatsia japonica, Lucidum Ait, Cuphea ignea, Lythrum salicaria, Metasequoia glyptosto boides, Eichhornia crassipes, Salvinia natans, Nelumbo nucifera, Nymphaea tetragona, Nymphoides peltatm.
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