A PREDICTION METHOD OF MEMBRANE MODULE PERMEATION FLUX

摘要

The invention is related to a prediction method of membrane module permeation flux, which includes the following steps: during the separation process of porous membrane, making determination experiments with the porous membrane sample; making a prediction to the long-range permeation flux of the really industrial membrane module with the data of the determination experiments. Among them, the said determination experiments use a normal determination apparatus for the porous membrane separation experiment, which is operated at the same temperature with that of the really industrial apparatus, and the permeation flux of the porous membrane sample in different differential pressures are determined, the said prediction is based on the permeation flux at the beginning of the determination and during the preset time range of the determination. The said porous membrane can be ultrafiltration membrane or microfiltration membrane, and the area of the said porous membrane sample can be less 1 m2. The invention can greatly reduce the difficulty of getting the needed parameter in the porous membrane separation engineering design, remarkably shorten the necessary time to finish the engineering design and reduce the cost of the design obviously.