Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/47374
Title: FOULING PROPENSITY OF SECONDARY EFFLUENTS IN ULTRAFILTRATION MEMBRANE PROCESS
Authors: CAI BIJING
Keywords: Ultrafiltration (UF), Secondary effluents (SEFs), Major foulants, Reversibility of fouling, Fouling index
Issue Date: 26-Mar-2013
Source: CAI BIJING (2013-03-26). FOULING PROPENSITY OF SECONDARY EFFLUENTS IN ULTRAFILTRATION MEMBRANE PROCESS. ScholarBank@NUS Repository.
Abstract: Membrane fouling is one of the major obstacles for the wide-scale application of Ultrafiltration (UF) membrane in reusing secondary effluents (SEFs). Identification of major foulants and prediction of fouling propensity of SEFs are of crucial importance to understand and control fouling. To date, many studies have been conducted to elucidate the effects of water characteristics on UF fouling and develop fouling indices and models to predict fouling. However, conflicting results still exist in identifying the major foulants and understanding their specific roles in fouling development. The effect of water characteristics on fouling reversibility is still unclear. A standard and reliable fouling index to evaluate fouling propensity of SEFs has yet to be established, and the predicting tool base on fouling index is still in lack. Therefore, the aims of this study were to: i) identify the major foulants contained in the domestic and industrial SEFs and investigate the effects of these major foulants on fouling development; ii) identify the reversibility of the major foulants and investigate the effects of water characteristics on fouling reversibility; and iii) establish and validate a modified fouling index to predict fouling propensity of SEFs and apply the built fouling index in establishing the predicting model.
URI: http://scholarbank.nus.edu.sg/handle/10635/47374
Appears in Collections:Ph.D Theses (Open)

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