复合人工湿地系统对冬季生活污水的净化研究

Studyed on Sanitary Sewage treatment used hybrid constructed wetland ststems

将生态浮床和潜流人工湿地组合成复合人工湿地系统,处理高校的生活污水。观测发现,在冬季风车草和美人蕉在浮床中的生长状况良好;野芋在浮床中的长势不好,叶片枯萎,并且新叶长得很慢,但是根系发育良好;湿地槽中美人蕉的长势好于浮床中的。实验表明,冬季该系统的处理效果理想,CODcr、NH4+-N、TN、TP的去除率可达40%以上,其中TP的去除效果最佳;冬季,相同植物在湿地槽对污染物的处理效果优于生态浮床。

The ecological floating bed and the subsurface constructed wetland were combined to hybrid constructed wetlands systems to treat sanitary sewage of colleges. The observation showed Canna generalis Bailey and Cyperus alteruifolius L. grew well in the floating bed in winter; Colocasia esculenta L. grew bad, laminas withered and new leaves grew slowly, but the root system developed well; Canna generalis Bailey in the wetland slot grew better than those in the floating bed. Experiments showed that the treatment efficiency of the system was good in winter, and the removal rate of CODer ,NH4 ＋ - N, TN, rip was over 40%. Compared with other pollutants, the removal effect of TP is the best. The wetland plants had better removal efficiency of pollutants in the wetland slot than those in the cological floating bed in winter.