梯级河岸人工湿地的数值模拟研究  

Study on Numerical Simulation of Cascaded Riparian Constructed Wetlands

作　　者：王俊[1,2] 黄岁樑[2] 沈静[3] 范志云[1] 

机构地区：[1]天津城市建设学院基础部,天津300384 [2]南开大学环境科学与工程学院/环境污染过程与基准教育部重点实验室,天津300071 [3]山东信息职业技术学院,山东潍坊261061

出　　处：《武汉大学学报（理学版）》2012年第4期359-365,共7页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金(51079068);天津市科技支撑计划重点项目(09ZCGYSF00400);国家水体污染控制与治理重大专项(2009ZX07209-001);天津市水质科学与技术重点实验室开放研究基金资助项目

摘　　要：通过梯级河岸人工湿地的数值模拟,以总磷(TP)在梯级河岸人工湿地的运移为例,通过流场、TP浓度场和TP运移归宿的分析,探讨了植物根系和填料对TP运移和去除效果的影响.研究结果表明,对TP而言,有植物湿地的去除率均大于相应无植物湿地的去除率;含豆石层(降解系数和渗透系数相对较大)湿地的去除率均略大于相应无豆石层湿地的去除率.Riparian constructed wetlands have been promoted as a means of reducing nutrient inputs from nonpoint pollution and river pollution. Riparian constructed wetlands have combined the treatment principles of both natural ri- parian wetlands and constructed wetlands. A three dimensional numerical model was developed for modeling TP trans- port in cascaded riparian constructed wetlands. The effects of plant roots and filler to TP transport and removal effi- ciency were discussed from the aspects of the flow fields, TP concentration fields and the fate of TP. The removal effi- ciencies of the riparian constructed wetlands with plants are higher than the corresponding riparian constructed wet- lands without Plants. The removal efficiencies of the riparian constructed wetlands with pisolite （degradation parame- ter and conductivity parameter were relatively larger） are a little higher than the corresponding riparian constructed wetlands without pisolite.

关 键 词：梯级河岸人工湿地 数值模拟 植物根系 填料 去除率 

分 类 号：X53[环境科学与工程—环境工程]