Drain Pollution Modelling and Validation Using Different Software

Abstract

River water quality models are used extensively in research as well as in the design and assessment of water quality management measures. The application of mathematical models for that purpose dates back to the initial studies of oxygen depletion due to organic waste pollution. Since then models have been constantly refined and updated to meet new and emerging problems of surface water pollution such as eutrophication, acute and chronic toxicity etc. Modelling of the oxygen-sag model with the help of Streeter Phelps equation are used to demonstrate the potential benefits of the application of user-friendly numerical software packages in environmental engineering education and practice. The simulation is used to obtain the profiles of oxygen concentration, oxygen deficit, as well as de-oxygenation and re oxygenation rates as a function of distance for a steady state drain velocity. Simulations are carried out for using previously published results. It is shown that the solution profiles obtained by numerical simulation demonstrate the processes involved more than the point values provided by an analytical solution. Due to the many benefits of modelling and simulation, we can envision rapid spread of the use of simulation in environmental, chemical and biotechnology engineering education and practice. In the current research two different software POLYMATH6.10 and MATLAB, 2019 Ra has been used for the same data and compared to check the feasibility, flexibility and accuracy for the same model but different software.