title: Analysis of filtration characteristics in submerged microfiltration for drinking water treatment.
abstract: Hollow fiber membranes have been widely employed for water and wastewater treatments. Nevertheless, understanding the filtration characteristics of hollow fiber membranes is complicated by the axial distributions of transmembrane pressure (TMP) and flux, which are key factors for both fouling control and module design. In this study, model equations to account for different fouling mechanisms were derived to analyze the performance of submerged hollow fiber systems with different conditions in terms of feed water characteristics and membrane material. A series of experiments with synthetic feed and raw water were carried out using hydrophilic and hydrophobic membrane modules. The model successfully fits the experimental results for synthetic feed as well as raw water. The major fouling mechanisms for filtration of raw water using hydrophilic and hydrophobic membranes are identified as cake formation and standard blocking, respectively. The model calculations indicate that the distributions of flux and cake (fouling) resistance are sensitive to the fiber length of the membrane.
authors.affiliation: Environmental Research Department, Korea Institute of Construction Technology, Ilsan, Kyunggi-do 411-712, Republic of Korea.
authors.forename: Sangho
authors.initials: S
authors.lastname: Lee
authors.forename: Pyung-Kyu
authors.initials: PK
authors.lastname: Park
authors.forename: Jae-Hyuk
authors.initials: JH
authors.lastname: Kim
authors.forename: Kyung-Min
authors.initials: KM
authors.lastname: Yeon
authors.forename: Chung-Hak
authors.initials: CH
authors.lastname: Lee
mesh_terms: D005374:Filtration / Q000295:instrumentation* / Q000379:methods*; D008567:Membranes, Artificial; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D014867:Water / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D008567:Membranes, Artificial; D014867:Water