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首页> 外文期刊>Water Environment Research >Updated Activated Sludge Model n°1 Parameter Values for Improved Prediction of Nitrogen Removal in Activated Sludge Processes: Validation at 13 Full-scale Plants
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Updated Activated Sludge Model n°1 Parameter Values for Improved Prediction of Nitrogen Removal in Activated Sludge Processes: Validation at 13 Full-scale Plants

机译:更新了活性污泥模型n°1参数值,以改进对活性污泥工艺中脱氮的预测:在13座大型工厂中的验证

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摘要

The Activated Sludge Model n°1 (ASM1) is the main model used in simulation projects focusing on nitrogen removal. Recent laboratory-scale studies have found that the default values given 20 years ago for the decay rate of nitrifiers and for the heterotrophic biomass yield in anoxic conditions were inadequate. To verify the relevance of the revised parameter values at full scale, a series of simulations were carried out with ASM1 using the original and updated set of parameters at 20℃ and 10℃. The simulation results were compared with data collected at 13 full-scale nitrifying-denitrifying municipal treatment plants. This work shows that simulations using the original ASM1 default parameters tend to overpredict the nitrification rate and underpredict the denitrification rate. The updated set of parameters allows more realistic predictions over a wide range of operating conditions.
机译:nl1型活性污泥模型(ASM1)是模拟项目中用于脱氮的主要模型。最近的实验室规模研究发现,20年前给定的硝化器衰减速率和缺氧条件下异养生物质产量的默认值不足。为了全面验证修改后的参数值的相关性,使用ASM1在20℃和10℃使用原始和更新的参数集进行了一系列模拟。将模拟结果与在13个大型硝化-反硝化市政处理厂收集的数据进行了比较。这项工作表明,使用原始ASM1默认参数进行的模拟趋向于高估硝化率而低估了反硝化率。更新的参数集允许在广泛的操作条件下进行更实际的预测。

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