The Study on Optimized the Clarification Membrane Filtration Process of Drinking Water Treatment

摘要

In this paper, the relationship of membrane fouling rates and the operation conditions of Clarification Membrane process had been investigated with Response Surface Methodology (RSM). Base on the data of operation conditions experiment, including: filtration flux, backwashing pressure (the ratio of the pressure of backwashing/filtration), backwashing rate (the ratio of backwashing time/filtration time) and membrane fouling rates, a quadratic polynomial regression model had been established. The model indicates that there is a minimum membrane fouling rates at 0.214 Kpa/d, when the operation conditions are filter time 30min, filtration flux 33.16L/m2Ȃ2;h, backwashing pressure 156.39%, backwashing rates 4.14%. It was verified by the actual experiment that the absolute error between the actual membrane fouling rates at the optimal operation conditions and the prediction of the model is 3.27%, indicating that the model is valid.