安全工程专业英文文献翻译一篇.doc

RIVER WATER QUALITY MODEL NO. 1: III. BIOCHEMICAL SUBMODEL SELECTION P. Vanrolleghem （University of Kassel, Kurt-Wolters-Str. 3, D-34125 Kassel, Germany） ABSTRACT The new River Water Quality Model no.1 introduced in the two accompanying papers by Shanahan et al. (2000) and Reichert et al. (2000) is comprehensive. Shanahan et al. (2000) introduced a six-step decision procedure to select the necessary model features for a certain application. This paper specifically addresses one of these steps, i.e. the selection of submodels of the comprehensive biochemical conversion model introduced in Reichert et al. (2000). Specific conditions for inclusion of one or the other conversion process or model component are introduced, as are some general rules that can support the selection. Examples of simplified models are presented. KEYWORDS denitrification, dissolved oxygen, model selection, water quality models 1. INTRODUCTION The IWA (formerly IAWQ) Task Group on River Water Quality Modelling was formed to create a scientific and technical base from which to formulate standardised, consistent river water quality models and guidelines for their use. This effort is intended to lead to the development of (a set of) river water quality models that are compatible with the existing IWA Activated Sludge Models (ASM1, ASM2 and ASM3; Henze et al. 1987, Henze et al. 1995, Gujer et al. 1999) and can be straightforwardly linked to them. Specifically, water quality constituents and model state variables characterising C, O, N and P cycling are to be selected for the basic model. In a first effort, the task group analysed the state of the art of river water quality modelling, its problems, and possible future directions (Rauch et al., 1998; Shanahan et al., 1998; Somlyódy et al., 1998). This paper is the third of a three-part series series on the development of a model. In the first paper, Shanahan et al.(2000) present the general modelling approach and a six-step decision process is introd