NUMERICAL MODELLING OF BACTERIAL TRANSPORT THROUGH POROUS MEDIUM

Abstract

Ground water is no doubt the greatest and most important natural source of watersupply but increasing industrial, nuclear and domestic wastes being discharged into the aquifers pose a serious problems of its pollution. It was generally felt that passage of polluted water through porous media would purify itself., In which bacterial pollution is the most important. However, it has been found that purifying • action has its limitations. In order to prevent or minimize such a water pollution problem, a thorough understanding of the flow and bacterial transport mechanism along with the associated parameters is essential. In present study, investigation was concerned with the dispersion, decay & growth, depositon and entrainment of bacteria. Finite difference method is used to. solve the differential equation of bacterial transport. First, •byl using the concentration (measured) various parameters related to bacterial transport calculated. Second, by using these estimated paramters with the help of designed software, concentration at different time and location. estiniated.‘ A'coniiiailson is done with the measured concentration at different time and location. • In sensitivity analysis the steady state of bacterial concentration with time is more sensitive to declogging coefficient than clogging (deposition) coefficient.