利用生态混凝土控制城市坡面暴雨径流污染试验研究  

Application of eco-concrete for controlling stormwater pollution from urban sloping-land

作　　者：陈庆锋[1] 单保庆[1] 尹澄清[1] 胡承孝[2] 

机构地区：[1]中国科学院生态环境研究中心,北京100085 [2]华中农业大学资源与环境学院,武汉430070

出　　处：《环境污染治理技术与设备》2006年第11期23-28,共6页Techniques and Equipment for Environmental Pollution Control

基　　金：国家"863"高技术研究发展计划资助项目(2002AA-601022)

摘　　要：利用生态混凝土作为护坡材料,研究暴雨条件下生态混凝土控制山坡降雨径流污染的机理,以期对生态混凝土在城市护坡和护岸中的应用提供理论依据。研究结果表明,生态混凝土改变了雨水在坡面上的水文过程,阻延径流作用十分明显,有效地降低了污染物的负荷输出。生态混凝土试验小区(T2)与裸地(CK)和改良土壤小区(T1)相比,径流量分别减少了48%和24%,TN年度污染负荷(UPLR s)分别减少了53%和45%,溶解态氮(DN)减少了26%和28%,TP减少了57%和30%,溶解态磷(DP)降低了80%和33%,COD降低了62%和40%,TSS降低了56%和43%,产流时间和流量峰均明显滞后。另外,同植被覆盖良好的小区(T3)相比,生态混凝土对各种污染指标的控制效果没有明显差异,但其抗冲刷能力较强,更能适应城市护坡和护岸的需要。To apply eco-concrete to protecting urban sloping-land and river bank,a study on control mechanism of eco-concrete for sloping-land stormwater pollution was carried out in Wuhan City Zoo in 2004. The results showed that eco-concrete could effectively change the hydrological process by delaying the generation of runoff obviously, and make the export amount of pollutant load decrease sharply. Compared with no-vegetation soil（CK） and improved soil plots （T1） , the reduced rates of runoff volume in eco-concrete plot（T2） were 48% and 24% , and the unit pollution load rates（ UPLRs）of total nitrogen（TN）reduced were 53% and 45% ,dissolved nitrogen （ DN ） 80% and 33 % , total phosphorous （TP） 57 % and 30% , dissolved phosphorous （DP） 80% and 33 % , chemical oxygen demand （COD） 62% and 40% , and total suspended solids （TSS） 56% and 43% , respectively. The generating time and flow peak were also behind to the other plots. Compared with plant plot（T3） ,there was no difference of control efficiency and the eco-concrete is much better for protecting sloping-land and river bank from eroding by flooding in urban areas.

关 键 词：生态混凝土 山坡 土壤侵蚀 暴雨径流污染 城市区域 

分 类 号：X522[环境科学与工程—环境工程]