Modelling of membrane filtration of natural water for potable purposes

Three different methods have been proposed for the mathematical description of the microfiltration process of natural waters, that is: the model describing the changes of permeate flux in time - the "relaxation" model, the model of filtration resistance and the Hermia model which allows determination of the mechanism of pore blocking in the membrane. In order to assess the adjustment level of the proposed mathematical models with experimental data, the Fisher's statistical test was applied. The optimal time of filtration and membrane washing cycle for which the yield is the highest was also determined.