Method for determining operating conditions of membrane filtration device, and method of operating membrane filtration device using the same

摘要

PPROBLEM TO BE SOLVED: To provide a method for deciding operation conditions of a membrane filtration apparatus by which the operation condition of a pressure regulating means for regulating membrane filtration pressure, that of a flow rate regulating means for regulating a membrane filtration flow rate and that of a component content regulating means for regulating the content of a certain component of the liquid to be filtered are decided according to the membrane filtration performance and membrane filtration conditions and the liquid to be filtered is filtered by a separation membrane on the basis of the decided operation condition values, so that the separation membrane can be used over a long period of time. PSOLUTION: The method for deciding operation conditions of the membrane filtration apparatus comprises the steps of: predicting the fluctuation of the content of the component stuck to the separation membrane, that of the membrane filtration pressure, that of the membrane filtration flow rate, that of a membrane filtration flux or that of membrane resistance from data showing the kind of the component of the liquid to be filtered and time-series changes of the content of the component, data showing time-series changes of the membrane filtration flow rate and/or data showing time-series changes of the membrane filtration pressure; and deciding the operation condition of the pressure regulating means, the flow rate regulating means or the component content regulating means on the basis of the predicted results. PCOPYRIGHT: (C)2007,JPO&INPIT