Purifying polluted water in a lake or other water bodies is focusing on using ornamental plants.This paper chose three aqua-cultured plants,Philodenron selloum Koch,Scindapsus aureun and Hydrocotyle vulgaris,for this aqua-cultured experiment.The aqua-cultured technologies of these plants were discussed,and the purification effect on experimental wastewater by three plants with removal rates was studied.The results showed that the three ornamental plants had good purification capacity and adaptability in was...