环境工程学报2009，Vol.3Issue(12)：2208-2214,7.
新型人工浮岛流场数值模拟与结构优化分析
Numerical simulations of the flow field and analyses of the optimal filling structure for a new type of constructed floating island
摘要
Abstract
A new remediation approach for effective removal of nitrogen and phosphorus from surface water called multi-media constructed floating island was previously proposed in which two types of different filling media were used and two zones with different flow statuses and DO concentrations can be established. The water flux in each zone and water exchanges between the two zones control considerably removal efficiency of nitrogen and phosphorus. The numerical simulation approach was implemented to investigate the flow field of the proposed constructed floating island in order to identify the primary factors controlling the flow field and understand the op-timal design of filling structure. The numerical simulation results showed that the filling shape of the porous me-dium,filling depth of the porous medium,and hydraulic conductivities of the filling media determined essentially water flux in each zone and water exchanges between the two zones. It was computed that the stalactitic filling structure generated more water fluxes in the porous medium zone and water exchanges between the two zones than the layered filling structure,which indicated theoretically the former should offer more effective removal of N and P than the latter. A filed pilot-scale experiment was implemented and the consistent experimental results were ob-tained with the numerical simulation analyses.关键词
人工浮岛/数值模拟/水流通量/填充结构/脱氮除磷Key words
constructed floating island/numerical simulations/water fluxes/filling structure/nitrogen and phosphorus removal分类
资源环境引用本文复制引用
白少元,王明玉..新型人工浮岛流场数值模拟与结构优化分析[J].环境工程学报,2009,3(12):2208-2214,7.基金项目
中国科学院"百人计划"择优支持项目 （）
