首页> 美国政府科技报告 >Modeling the Performance of Sediment Detention Pond. Volume 1. The CSTRS (Continuous Stirred Tank Reactors in Series) Model Based on Simple Reactor Theory
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Modeling the Performance of Sediment Detention Pond. Volume 1. The CSTRS (Continuous Stirred Tank Reactors in Series) Model Based on Simple Reactor Theory

机译:沉积物滞留池性能建模。第1卷。基于简单反应器理论的CsTRs(串联连续搅拌釜反应器)模型

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A conceptual model of detention ponds was developed based on the concepts of continuous stirred tank reactors in series (CSTRS), in which the pond was visualized as a series of completely mixed tank reactors. Mixing between inflow plugs and previously stored flow was allowed in the model. Approximate detention times for sediment particles was estimated by a sophisticated bookkeeping scheme, which accounted for mixing between slugs. Sediment deposition was calculated by conducting a mass balance in eight layers of the pond. Stokes' equation was used to determine the settling velocity of sediment particles. The sediment detention pond models were evaluated using the results of six tests on a pilot-scale sediment basin. A comparison between observed results and predicted results was made using a plug flow model (DEPOSITS) and the CSTRS model. Average trap efficiency was predicted very well with both models. Predictions with DEPOSITS, however, poorly estimated the timing and shape of the observed sediment graph. The CSTRS model predicted the shape of this sediment graph quite well.

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