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A Study on Purification of the Eutrophic Water Body with Economical Plants Siollessly Cultivated on Artificial Substratum

LIU Shuyuan\ REN Jiuchang\ YOU Wenhui (Nation Key Joint Laboratory of Environmental Simulatio n and Pollution Control, Division of Water Environment,Center for Environmental Sciences,Peking Unive rsity,Beijing,100871)  
The purification of eutrophic water body was studied by means of soilless cultiv ation technique on artificial substratum. In lab test, three spices plants: Oen anthe decumbens,Lolium multiflorum and Ipomoea aquatica Forsk grew well an d the removing rates of TN,NH 4 N,NO 3 N,TP,PO 4 P were as high as 80%. Th e soilless cultivation technique on artificial substratum was studied in order t o purify the eutrophic water body and to get considerable economic benefit at th e same time. The application prospect of the means was discussed also.
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