采用水培技术,研究了石龙芮(Ranunculus sceleratus L.)在净化城市生活污水中的应用潜力。经5d培养,石龙芮处理组总氮(K N)、总磷(TP)浓度分别降低到2.93和0.0976mg·L^-1,总去除率分别达到97.47%和98.44%;氧化还原电位(Eh)迅速提高;pH值得到一定的改善;浊度迅速下降,72h后达到5度。而对照组K N、TP浓度分别为35.42和1.27mg·L^-1,总去除率仅为52.29%和61.31%;氧化还原电位上升缓慢;浊度下降缓慢,72h后仍为57.8度。结果表明石龙芮在富营养化水体控制及水生生态修复中具有很大的应用潜力。

The applying potential of Ranunculus sceleratus L. to purify sewage was studied with water culture method. After 5 d cultivating, the concentration of total nitrogen (K-N) and total phosphorus (TP) in sewage treated with R. sceleratus were reduced to 2.93 and 0.097 6 mg·L^-1 respectively, and total removal ratios were 97.47% and 98.44% respectively; the redox level increased quickly; the pH was amended; and the turbility reduced quickly, it reached to 5 degree after 72 h. Contrastively, the K-N and TP concentration of controls were 35.42 and 1.27 mg·L^-1 respectively, total removal ratios were 52.29% and 61.31% respectively; the redox level increased slowly; and the turbidity reduced slowly, and it yet remained 57.8 degree after 72 h cultivation. The result shows that there is large application potential for R. sceleratus in eutrophication control and water ecological restoration.