Fluidized bed magnetic ion exchange (MIEX) as pre-treatment process for a submerged membrane reactor in wastewater treatment and reuse

Elsevier Inc
Publication Type:
Journal Article
Desalination, 2008, 227 (1-3), pp. 85 - 93
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Magnetic ion exchange (MIEX) resin can effectively remove significant amounts of organic matter from biologically treated sewage effluent. The MIEX process has mainly been used as a batch process, which requires a large area for accommodating both contact tank and settling tank in the treatment process. In this study, a fluidized bed MIEX reactor (a semi-continuous process) was used as a pre-treatment for a submerged membrane. When used as a pre-treatment for a submerged membrane, the fluidized bed MIEX contactor could remove a significant amount of organic matter in the wastewater (80% removal). This pre-treatment helped to reduce membrane fouling and keep transmembrane pressure low during the membrane operation of 8 h (less than 19 kPa). The regeneration of MIEX resin (number of regeneration, regeneration time, etc.) did not have any adverse effect on the organic removal by MIEX
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