生态环境学报2012，Vol.21Issue(1)：124-129,6.
不同盖度凤眼莲对2种水流模式下水体净化效果比较
Purification Effect of Water Hyacinth ( Eichhornia crassipes ) Coverage on the Different Flow Properties Water Bodies
摘要
Abstract
This paper compares the removal efficiency of water hyacinth{Eichhornia crassipes)with different coverage in flow and still water systems, the physical and chemical indicators of water in the two systems have been monitored continuously. In flow water system, when the coverage of water hyacinth exceeds 80%, the removal of TN, TP, BOD5 is significantly increased to 44.35%, 45.46%, 56.98%, respectively which indicates the removal efficiency of TN, TP, BOD5 are improved with increasing water hyacinth coverage. In still water system, DO concentration decreases significantly with the water hyacinth coverage increasing. Generally water hyacinth shows higher removal performance, 36.60%, 88.84%, 36.74%, 79.39% for TN, NH4+-N, NO3-N, NO2-N, with a coverage below 50% than above 50%. Planting water hyacinth significantly increases TP in water but decreases the PO43--P. The water hyacinth removes PO43--P significantly when its coverage is below 95%, while the removal performance decreases when the coverage reached 100%. Thus, effective ecological restoration of polluted water using water hyacinth requires consideration of water characteristic and the coverage controll.关键词
凤眼莲/盖度/流动水体/静止水体/有机污染Key words
water hyacinth/ coverage/ flowing water/ still water/ organic pollution分类
资源环境引用本文复制引用
王锦旗,郑有飞,宋玉芝,王国祥..不同盖度凤眼莲对2种水流模式下水体净化效果比较[J].生态环境学报,2012,21(1):124-129,6.基金项目
国家自然科学基金项目(41105113) （41105113）
国家自然科学基金项目(41071341) （41071341）
