立体生态净化床处理含锶、铯废水的试验研究

目的]利用立体生态净化床处理含锶、铯废水。方法]分别采用种植吉祥草、吊兰、水花生、吊竹梅、凤眼莲的立体生态净化床系统,对含锶、铯废水的净化效果进行了试验研究。结果]不同植物系统对含锶、铯废水净化效果各不相同,吉祥草、吊兰、水花生、吊竹梅、凤眼莲系统对水体中Sr的最终去除率分别为48.7%、46.1%、38.8%、45.8%和31.7%;对Cs的最终去除率分别为60.0%、56.7%、45.0%、42.1%、20.3%。其中,以种植吊兰的生态净化床处理效果最好,地上部对Sr、Cs的富集量分别为223.54和18.63 mg/kg,可作为后期研究对象。结论]该研究为含锶、铯废水的处理提供了科学参考。

Experimental Study on Treatment of Sr/Cs Wastewater Using Epuvalisation System

Objective] The research aimed to use Epuvalisation system to treat Sr/Cs wastewater.Method] Experiments were carried out to test the ability of five selected plant species introduced into Epuvalisation system to remove Sr2+ and Cs+ from simulation wastewater mixed with sewage.Result]Each plant system had different purification capacities and adaptabilities in Sr/Cs wastewater.The removal rates of Sr and Cs by Reineckea carnea(Andr.)Kunth,Chlorophytum comosum,Alternanthera philoxeroides(Mart.) Griseb.,Zebrina pendula Schnizl and Eichhornia crassipes were 48.7%,46.1%,38.8%,45.8%,31.7% and 60.0%,56.7%,45.0%,42.1% and 20.3% respectively.In addition,the most high treatment efficiency phase was observed in Chlorophytum comosum,within which the enrichment contents of Sr and Cs in over ground part were 223.54 and 18.63 mg/kg,and we need to investigate it furtherly.Conclusion] The study could provide scientific references for the treatment of Sr/Cs wastewater.