The On-site Optimization Study of Iron and Manganese Removal from Groundwater by Hallow-Fiber Microfiltration

doi:10.2166/aqua.2011.067

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Engineering and Science (including master's program) > Periodical Articles > Item 310902800/26985

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/26985

Title:	The On-site Optimization Study of Iron and Manganese Removal from Groundwater by Hallow-Fiber Microfiltration
Authors:	Chen, Wen-Hsiang Hsieh, Yung-Hsu Wu, Chih-Chao Wan, Meng-Wei Futalan, Cybelle Morales Kan, Chi-Chuan
Contributors:	環境工程與科學系
Keywords:	groundwater hollow-fiber membrane filtration iron manganese oxidation
Date:	2011-07
Issue Date:	2013-10-16 09:08:43 (UTC+8)
Publisher:	IWA PUBLISHING
Abstract:	The aim of this research was to investigate the removal of iron and manganese from groundwater by aeration, chlorine oxidation and microfiltration (MF). Pilot-scale experiments were performed at the Chang-Hua Water Treatment Plant in Taiwan. The raw waters contained soluble iron (0.4 mg/L) and manganese (0.5 mg/L) which were oxidized by chlorine and then filtered by hollow-fiber PTFE-MF. The oxidized particles on membranes under appropriate backwash were also investigated. The particle size and quality of treated water were examined. The experimental results indicated that the concentration of the residual manganese remained greater than 0.1 mg/L in treated water during the initial operation period. However, it decreased to below 0.01 mg/L after 2 weeks processing time. The scanning electron microscopy (SEM) energy dispersive spectroscopy analysis of oxidized metal particles under each process illustrated that the particles accumulated on membrane enhanced removal of iron and manganese, through autocatalytic activity in the accumulated layer on membrane. Moreover, the membrane operation pressure over 120 kPa was suggested for the active backwash process, where no structural damage on membrane was confirmed by SEM analysis.
Relation:	Journal of Water Supply: Research and Technology – AQUA, 60(6), pp.623-629
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

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