摘 要：
通过水生植物灯芯草(Juncus effusust L.)、空心莲子草[Alternanthera Philoxeroides(Mart.)Griseb.]和金鱼藻(Ceratophyllum demersum L.)在模拟污水中的培养试验,研究其对模拟污水中总氮、总磷的去除效果,探讨3种水生植物对富营养化水体中污染物的去除能力。结果表明,在模拟的轻度、中度和高度富营养污水中,灯芯草对氮去除率最高(88.5%~94.2%),金鱼藻最低(62.7%~71.2%);空心莲子草对磷的去除效果最佳(79.5%~94.0%),其次是灯芯草(82.9%~90.1%)。从植物对氮磷的吸收贡献率来看,氮的吸收贡献率呈现富营养化程度不同、植物表现亦不同的状况,轻度、中度和高度富营养污水中,对氮的吸收贡献率从高到低分别是金鱼藻(70.3%)、空心莲子草(65.8%)和灯芯草(38.8%);金鱼藻在3种不同富营养化程度的污水中对磷的吸收贡献率最高(60.1%~84.8%),其次是空心莲子草(55.6%~70.1%)。综合考虑污水氮磷去除率以及植物对氮磷的吸收贡献率可知,3种植物均适用于轻、中度污水的治理,特别是在中度富营养状况下,3种水生植物都表现出优良的净化能力。
译 名：
Biological Purification Effects of Three Aquatic Plants on N and P in Simulated Wastewater
作 者：
WANG Bin;ZHOU Ya-ping;College of Chemistry,Biology and Materials Science,East China Institute of Technology;
关键词：
simulation wastewater;;aquatic plant;;biological purification;;effection
摘 要：
With the culture experiments of three different water plants Juncus effusust L., Alternanthera Philoxeroides(Mart.)Griseb. and Ceratophyllum demersum L. in simulated waste water, the removal capacities of total nitrogen, total phosphorus by three aquatic plants were studied. The removal effects of three aquatic plants were investigated. The results showed that the highest removal rate of nitrogen was Juncus effusust L.(88.5% ~94.2%) and the lowest rate of nitrogen was Ceratophyllum demersum L.(62.7% ~71.2%). The best removal effect of phosphorus was Alternanthera Philoxeroides(Mart.)Griseb.(79.5% ~94.0%) and the secondly removal effect of phosphorus was Juncus effusust L.(82.9% ~90.1%) in the mild, moderate and highly eutrophic water. From absorption contribution on nitrogen and phosphorus of the three plants, it was found that the rates of the absorption contribution plants performed on nitrogen present were different in different eutrophication degree water.In the mild, moderate and high eutrophic water, the highest contribution rates of nitrogen were Ceratophyllum demersum L.(70.3%), Alternanthera Philoxeroides(Mart.)Griseb(65.8%) and Juncus effusust L(38.8%), respectively. In the three different eutrophic water, the highest contribution rate of phosphorus was Ceratophyllum demersum L.(60.1% ~84.8%), the secondly contribution rate of phosphorus was Alternanthera Philoxeroides(Mart.) Griseb.(55.6%~70.1%). Considering the removel rates and the contribution rates of nitrogen and phosphorus, three aquatic plants were suitable for mild, moderate wastewater.Especially in moderate rich nutrition water, the three species of aquatic plants had excellent purification ability.
