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Improvement of Fouling in Membrane Separation Process for Leachate Treatment using Ultrasound(II) : Analysis of Membrane Materials, Solutes and Multi-ultrasonic Effect  

Kim, Seok-Wan (Department of Health Environment, Daegu Haany University)
Lim, Jae-Lim (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Lee, Jun-Geol (Department of Health Environment, Daegu Haany University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.28, no.2, 2006 , pp. 207-215 More about this Journal
Abstract
This study evaluated the effect of ultrasonic irradiation on reducing membrane fouling for the treatment of chemically treated leachate and biologically treated leachate. The experiments on improvement of membrane flux according to the membrane types(MF and UF) and membrane materials were performed with changing frequency(40 kHz and 120 kHz) and intensity(200 W and 400 W) of ultrasound in ultrasonic membrane separation apparatus which ultrasound can be periodically irradiated. Additionally, the effect of dual frequency ultrasound which 40 kHz md 120 kHz are irradiated simultaneously was evaluated. The improvement of membrane flux by periodical ultrasound irradiation was higher in microfiltration(MF) membrane than in ultrafiltration(UF) membrane. It was sustained more in the MF membrane of polyvinylidene fluoride(PVDF) than in that of polysulfon(PS). Ultrasonic improvement of membrane flux was different depending on the characteristics of target wastewater. It was sustainably maintained without reclogging using dual frequency ultrasound although the improvement of membrane flux was lower.
Keywords
Ultrasound; Membrane Separation; MF; UF; Leachate; Cleaning;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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