Alternative Approach to Evaluate Sedimentation Performance of Stormwater Detention Basins Using a Nondimensionalized Time Scale

作者：Takamatsu Masatsugu^*; Barrett Michael E; Charbeneau Randall J

来源：Journal of Environmental Engineering, 2012, 138(7): 809-814.

DOI：10.1061/(ASCE)EE.1943-7870.0000526

• Physical model
• Sedimentation
• Stormwater
• BMP
• Dry detention basin
• Removal efficiency

To evaluate sediment removal in dry detention basins, one of the most frequently used Best Management Practices (BMPs), a particle pathline model using plug flow assumption was proposed in a previous study. The model requires numerical integration, thus it may not be convenient for quick evaluation and design of detention basins. To overcome the difficulty a simpler continuous stirring tank reactor (CSTR) model is proposed and used to compare outflow Suspended Sediment Concentrations (SSCs) from different size storms using a nondimensionalized time scale. The CSTR model satisfactorily predicts sediment removal and outflow SSC measured using a physical model. The paper presents the time nondimensionalization and CSTR model application processes and discusses the critical characteristics of the proposed models. DOI: 10.1061/(ASCE)EE.1943-7870.0000526.

• 出版日期2012-7