水生植物复合系统处理富营养化水体的初步研究

Pilot Study on Treating Eutrophicated Water by Hydrophyte Complex System

根据水生植物不同的生活型,设计建造了由漂浮、浮叶植物组成的水生植物复合生态系统,并在洋河水库进行了动态模拟试验,从群落水平研究了多种水生植物镶嵌组合的复合系统对富营养化水体的净化效果。结果表明:富营养化水体在流经该系统之后水中的TN、TP、NH4+-N、NO3--N、PO43--P被有效地去除,对藻类也有很好抑制、截留作用,使水质和水体透明度得到改善。通过实践,水力停留时间3d时对水体有较好的净化效果。

An aquatic-plant complex system is built with aquatic plants of various ecological groups in Yanghe reservoir.The purification efficiency of the aquatic-plant complex system is evaluated by dynamic simulation test.The result shows that the eutrophic water of Yanghe reservoir can be purified and the transparency improved effectively as it passes though the aquatic-plant complex system.The results of dynamic experiment show that the purification efficiencies are significant when the retention time of the eutrophic water is 3 days in the aquatic-plant complex system.