Abstract
Water treatment technology using hollow fiber membrane has been developed rapidly since the 1980s due to the strengthening of water and wastewater quality standards and the limited treatment capability of traditional rapid sand filtration. The technology has been applied to a variety of fields, such as water purification, wastewater treatment and pretreatment of seawater desalination, now being widely recognized as an advanced water treatment process. The process has been further improved recently in terms of performance and efficiency, attracting increasing attention as a leading technology that can enable energy–saving operation. Kuraray has developed a new hollow fiber membrane module that can realize higher water permeability and higher turbidity water treatment. This module consists of high flux hydrophilic PVDF membrane and accordingly shows significantly higher pure water permeability ( >50 m3/hr/mod/100 kPa). Moreover, SS resistance has been improved by employing the one–end–free fiber structure and an air and water distributor located at the center of the module. Kuraray is proceeding with the study to achieve higher design flux and pump free operation with this innovative product.
