石龙芮对不同浓度污染水体的净化效果研究

Study on Purification effect in different concerntrations of sewage by Ranunculus sceleratus Linn

选取在南京江心洲生长良好的石龙芮(Ranunculus sceleratus Linn)为研究对象,研究不同生长期的石龙芮对低、中、高3种浓度生活污水的水质改善效应,结果表明:(1)石龙芮对生活污水的净化效果与其生长期及污水浓度程度呈明显相关性;(2)拔节期的石龙芮在低、中浓度生活污水中的营养物去除率最高;(3)分枝期的石龙芮在高浓度生活污水中的营养物去除率最高。

In order to research the purification effect of Ranunculus sceleratus Linn at different growth stages under three concentration levels, we selected Ranunculus sceleratus Linn which was planted in the Middle state of the Yangtze river as the right research object. The results were summarized as follows： （1）It is obviously that the purification ability of Ranunculus sceleratus Linn has a relationship with its growth stages and the concentration levels of the sewage; （2）The Ranunculus sceleratus Linn at jointing stage has the highest purification effect in the low and medium concentrations;（3）The Ranunculus sceleratus Linn at ramification stage has the highest purification ability under a high concentration level.