【摘要】 为筛选对邯郸市乡村河道水体净化效果较好的生态浮岛植物组合模式,在静态条件下,研究多种植物不同组合搭配的生态浮岛对乡村河道水体的净化效果,选取水葫芦、再力花、美人蕉、慈姑、水芹作为供试植物,比较5种组合对水体中COD、TP、NH4+-N等污染物的去除效率。38天的试验结果表明:水芹+慈姑+美人蕉+水葫芦、美人蕉+再力花+水葫芦对COD去除率较高,分别为35.5%、31.2%;水芹+慈姑+美人蕉+水葫芦、美人蕉+再力花+水葫芦对TP去除率较高,分别为81.6%、77.3%;水芹+慈姑+美人蕉+水葫芦、水葫芦+再力花+美人蕉+水芹对NH4+-N去除率较高,分别为55.4%、53.9%;混合植物型生态浮岛对乡村河道水体的净化有显著效果。更多还原

【Abstract】 The objective is to screen the ecological floating island planting model that has a good purifying effect on the rivers in rural Handan. Under static conditions, we selected Eichhornia crassipes, Thalia dealbata,Canna indica, Sagittaria and Oenanthe javanica as the test plants, and compared the removal efficiency of COD, TP, NH4+-N and other pollutants in water by five combinations of the plants. After 38 days of testing, the results showed that: Oenanthe javanica + Sagittaria + Canna indica + Eichhornia crassipes, Canna indica +Thalia dealbata + Eichhornia crassipes had high removal rates of COD, which was 35.5% and 31.2%,respectively. The removal rate of TP was high under Oenanthe javanica+ Sagittaria+ Canna indica+ Eichhornia crassipes, Canna indica+ Thalia dealbata+ Eichhornia crassipes, which was 81.6% and 77.3%, respectively.N was high under Oenanthe javanica + Sagittaria + Canna indica + Eichhornia crassipes, Eichhornia crassipes+ Thalia dealbata+ Canna indica+ Oenanthe javanica, which was 55.4% and53.9%, respectively. The mixed plant-type ecological floating island has a significant purifying effect on rural rivers.更多还原