【摘要】 为研究人工湿地理论水力停留时间与实际水力停留时间之间的差异与原因,以及水力停留时间与人工湿地其它指标之间的相互影响关系,文章以辽宁复州河人工湿地为研究对象,用NaCl作示踪剂,通过对人工湿地出水口电导率进行监测,从而测定人工湿地的水力停留时间。监测结果表明,人工湿地理论水力停留时间比实际水力停留时间要长。原因主要为湿地运行过程中出现了淤积堵塞的情况,湿地实际孔隙率变小;人工湿地水力停留时间与湿地孔隙率、湿地类型以及湿地堵塞情况息息相关。研究所取得的数据可以为湿地的设计及湿地后期维护提供技术支持。更多还原

【Abstract】 In order to study on the difference and reason between theoretical hydraulic retention time and actual hydraulic retention time of constructed wetland, and the correlation influence between the hydraulic retention time and other indexes of constructed wetland, taking the Fuzhouhe river constructed wetland in Liaoning Province as example and using Na Cl as tracer material, the paper detects the hydraulic retention time of constructed wetland by detecting of electric conductivity at water outlet. The detection results showed that the theoretical hydraulic retention time of constructed wetland is longer than the actual time. The main reasons are the actual porosity becomes smaller by the siltation in the operation of the constructed wetland and the hydraulic retention time of constructed wetland is closely related with wetland porosity, wetland type and siltation situations. The data obtained by the study could provide technical support for wetland design and post-maintenance.更多还原