van Griensven A, Bauwens W
Department of Hydrology and Hydraulic Engineering, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium.
Water Sci Technol. 2003;48(3):1-8.
Although there are various ways to model the bio-chemical processes in rivers, two main trends can be distinguished: the traditional QUAL2E-type models and the RWQM-type models, developed by extending and adapting the ASM equations. Both approaches have their weak and strong points. This paper focuses on the application of these concepts in an integrated modelling context. To this purpose, the models were adapted to respect the mass balances, to enable linkage to WWTP outputs and to diffuse pollution sources. Both approaches have been included in ESWAT--Extended Soil and Water Assessment Tool--which was developed by the authors to allow for an integral modelling of the water quantity and quality processes in river basins. A comparison and evaluation of both quality models is performed for the river Dender (Belgium). It is shown that both models give a reasonable fit for dissolved oxygen and ammonia. However, the dynamics of the quality processes for the RWQM model are slower, due to the time that bacteria need to adapt to changes of the loads of organic matter.
尽管有多种方法可用于模拟河流中的生化过程，但可区分出两种主要趋势：传统的QUAL2E型模型和通过扩展及调整活性污泥模型（ASM）方程而开发的RWQM型模型。这两种方法都有其优缺点。本文重点关注这些概念在综合建模背景下的应用。为此，对模型进行了调整，以符合质量平衡，实现与污水处理厂输出的关联，并分散污染源。这两种方法都已纳入ESWAT（扩展土壤和水评估工具），该工具由作者开发，用于对流域内的水量和水质过程进行整体建模。对登德河（比利时）的两种水质模型进行了比较和评估。结果表明，两种模型对溶解氧和氨的拟合效果都较为合理。然而，由于细菌需要时间来适应有机负荷的变化，RWQM模型的水质过程动态变化较慢。
