Abstract
ìì í ìì©ì í보를 ìí ì ì 기ì ë¡ì¨ íê²½ì , 기ì ì ì구ì¬íì 충족í ì ìë ëë ¸ì¬ì 멤ë¸ë ì¸ì¼ë¡ 구ì±ë 무ëë ¥ ë§ ì¬ê³¼ ìì¤í ì íê°íìë¤. ì´ ì¥ì¹ë ìëì°¨ì ìí ì¤ë ¥ê³¼ ì물íì ë§ ì¤ì¼ì¸µ ì ì´ë¡ ë³ëì ìëì§ìì´ íì ìê³ , íµì¬ ìì¬ì¸ PVDF ëë ¸ì¬ì 멤ë¸ë ì¸ íí°ê° ë³ë ¬ë¡ ì°ê²°, 모ëíëì´ ìì´ ë¬¼ ìì°ì±ì ëì´ë 구조ì´ë¤. ì´ ì¥ì¹ì ì¤ì íì¥ ì ì© ê°ë¥ì±ì íê°í기 ìí´ Pilot-scale (3000-5000 L/day) ëë ¸ì¬ì 멤ë¸ë ì¸ ê¸°ë° ì ì ìì¤í ì´ ê°ë°ëìêµ(í¤ë¦¬ë°ì, í¬ë°ë£¨ ë±)ì 2017ë 8ì ì¤ì¹ëì´ 3ê°ìê° ì´ìëìë¤. 14-92 L/(m2Ãh)ì íëì¤ë¡ ìì ì 물 ìì°ì±ì íì¸íìê³ ì²ë¦¬ìì íëì ë°í 리ìì ëì ì ê±°ì¨ (99.99% ì´ì)ë¡ ìì í ìì§ì ì¥ê¸°ê° ì ê³µí ì ììì íì¸íìë¤. ì´ë¬í ê²°ê³¼ë íì¥ ì ì©ì íµí´ ëë ¸ì¬ì 멤ë¸ë ì¸ ê¸°ë° ë¬´ëë ¥ ì ì ìì¤í ì´ ì¥ê¸°ê° ìì í ìì©ì를 ê³µê¸í ì ìë ì ìì¥ì¹ë¡ íê°ëìê³ , ì ì 기ì ë¡ì¨ ê°ëêµì ìì²ë¦¬ ì¥ì¹ë¡ íì© ê°ë¥ì±ì ë³´ì¬ì¤ë¤. Gravity-driven membrane (GDM) filtration system based on the nanofiber membrane was investigated. This system can be operated with little energy demand due to a gravitational pressure-driven filtration and biological fouling control strategy. Moreover, the optimal module configuration based on the high permeance of nanofiber membrane can provide a significantly high water productivity. In order to evaluate its applicability potential, the pilot-scale (3000-5000 L/day) systems with nanofiber membranes were operated in developing countries (Kiribati and Tuvalu). Our results showed that the 14- 92 L/(m2Ãh) of the permeate flux was determined indicating a stabilized water productivity. In addition, the permeate water indicated a high removal rate (more than 99.99%) of turbidity and bacteria. Consequently, the system can provide a stabilized water production with safe permeate water quality during long-term operation. These findings exemplify an effective approach to decentralized drinking water treatment for developing countries. Keywords: Nanofiber membrane, Decentralized water treatment, Gravity-driven membrane filtration, Permeate water quality
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