Discharge of domestic and industrial wastewater into the water bodies is the prime source of degradation of the freshwater ecosystem. Re‐aeration of the river allows the rejuvenation of river water quality by absorbing oxygen from the atmosphere at the air‐water interface. An accurate estimation of the re‐aeration coefficient helps to determine the assimilative capacity of streams and wastewater management also. This paper aims to develop the re‐aeration equation and its validation by modelling dissolved oxygen of the Yamuna River. Predictive re‐aeration equations are used to identify their applicability to the study area and the new equation is designed using multivariate statistical regression techniques. QUAL2Kw model is used to validate the equation by modelling dissolved oxygen. Results indicate that the developed equation performs better than the predictive re‐aeration equations for the prediction of water quality.

中文翻译：

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开发用于模拟降解流中溶解氧的再曝气方程

将生活和工业废水排入水体是淡水生态系统退化的主要来源。河流的通气可以通过吸收空气-水界面处的大气中的氧气来复兴河流水质。对通气系数的准确估算有助于确定河流的同化能力以及废水管理。本文旨在通过对亚穆纳河中的溶解氧进行建模来开发再曝气方程及其验证。预测充气方程式用于确定其在研究区域中的适用性，新方程式是使用多元统计回归技术设计的。QUAL2Kw模型用于通过对溶解氧进行建模来验证方程。