The aim of this paper is to describe the feedback of a course using an e-Learning simulation tool at the Ecole Nationale Supérieure des Mines de Saint- Etienne (ENSM-SE, France). It deals with the accelerated-time simulation of a chemical process (series of CFSTRs). The research project concerns the modelling of the functioning and the optimization of an industrial continuous wastewater detoxication process (WWDP). It also takes an interest in their applications in different fields, such as education and training. In the engineering education, a simulation tool is usually an interesting and efficient utility for familiarizing students with real industrial context. The pH regulation during the detoxication process of the wastewater from metal finishing workshops was first investigated, modelled and simulated. The simulator presently offers a model of the pH regulation, which intervenes in almost every WWDP stages. The e-Learning environment used was e-Mersion with its eJournal. This tool has been used in the frame of “Discrete Simulation of an Industrial Process” course in October 2006 for the first time. The goal of this course will be presented, as well as its conduct, results and feedback from students. We will also discuss about difficulties that we met during this project and some improvements that we will carry out for the next year.