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This article describes the concepts of the wetland, constructed wetland and the situation of the wetlands both in China and Shandong Province briefly. Then it instructs the theory of the the wetland puryfing water. It emphasizes the research of 9 of the constructed wetlands in Shandong Province. The constructed wetlands mostly locat both at the The Nansihu Lake(at Jining City, Zaozhuang City and Heze City) and The Dongpinghu Lake (at Taian City), which are called Nansihu wetland group and Dongpinghu wetland group.This artcle researches“the river way of the Quanhe constructed wetland”,“the old cananl constructed wetland”,“the inlet of the Guangfu river constructed wetland”,“the Laowanfu river constructed wetland in Jinxiang”,“the Inlet of the Jiehe constructed wetland in Tengzhou”,“the inlet of Xizhi river constructed wetland in Yutai”,“the inlet of Guo river constructed wetland in Tengzhou”,“the Xiaojihe constructed wetland in Taierzhuang”, and“the Daotianwa constructed wetland in Dongping”. It analyzes the some design of the constructed wetlands described above: geographical features, hydrology, the design of the rubber dam, the dimensions, the load of thewater, the type and the size of the wetland chosed, the ecology technology chosed, the chose of the plant, the engineering design, etc.At last, the passage summarizes the problems exsits in the constructed wetland in Shandong Province, and raises up some solutions to improve: choose sand and coal cinder as the substratum; chose the Phragmites australis, the Acorus calamus Linn, the Zizania latifolia Stapf and the Scirpus triqueter L as the basic plant; chose the cold-resistant bacterial strain; chose the best HRT and the water load; chose the better way of the water in; chose SSFW and VFW as the design mode, etc. besides, it concludes the better combined way to clear CODCr and NH3-N. For the water inletting highly of CODCr, the plan with rubber dam+retention pond+series connection of SFW+ecological bank protection is better, while for the water inletting highly of NH3-N, the plan with rubber dam+ retention pond+ecological gravel bed+SFW+SSFW is better. This article gives us a comprehensive knowledge of the construction and utilization of the constructed wetland in Shandong. It offers good references in the research and the use of the constructed wetland in Shandong.
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