PVDF中空纖維膜的表面改質

Chia Nan University of Pharmacy & Science Institutional Repository > 環境永續暨休閒學院 > 環境工程與科學系(所) > 博碩士論文 > Item 310902800/33918

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標題:	PVDF中空纖維膜的表面改質 Surface Modification of PVDF Hollow Fiber Membranes 自來水的水質對民生用水安全來說相當重要，但自來水經過老舊的運輸管路來到各地蓄水池、自家水塔，最後進到民眾家中，在這段過程中極可能會遭受污染。因此本研究使用微過濾技術(MF)聚偏二氟乙烯(PVDF)中空纖維膜過濾自來水，目的為過濾水中懸浮微粒、鐵鈣鎂離子及總菌，並針對中空纖維膜利用PEG溶液表面改質提升通量及過濾效果之可行性探討。本研究首先將聚偏二氟乙烯中空纖維膜浸泡於不同濃度之PEG溶液，藉由電子顯微鏡(SEM)探討薄膜表面及橫切面結構變化。以RO水測試各PEG濃度及浸泡時間等變因之過濾通量；以配製之鐵鈣鎂離子溶液測試過濾效果，並以含菌污水測試總菌過濾效果。結果顯示通量隨PEG濃度提高及浸泡時間增加而升高；利用PEG溶液改質也能提高對於水中濁度、三價鐵離子及總菌的過濾效果，對於自來水使用的前處理提供一個應用的方向。 The water quality of tap water is very important to the safety of people's livelihood. Tap water through the old transport lines to the reservoir, water tower, and finally into the people's homes. Contamination is highly likely in the process. Therefore, this study uses microfiltration technology (MF) by polydifluoroethylene (PVDF) hollow fiber membrane to filter tap water. The purpose is to filter suspended particles, iron, calcium and magnesium ions and total bacteria in water. And for the hollow fiber using PEG solution surface modification to improve flux and the feasibility of filtration effect.In this study, the PVDF hollow fiber membrane was soaked in different concentrations of PEG solution. The different in the surface and the cross-cutting of surface are explored by SEM. The filter flux of each PEG concentration and immersion time was tested with RO water. Test filtration results with the iron, calcium and magnesium ion solution by preparation. And the total bacteria filtration effect was tested with sterilizing sewage. The results showed that the flux increased with the increase of PEG concentration and the immersion time. The filtering effect of turbidity, trivalent iron ions and total bacteria in water can also be improved by using PEG solution modification. Provides an application direction for pretreatment for tap water use.
作者:	王道涵
貢獻者:	環境工程與科學系賴振立
關鍵字:	聚偏二氟乙烯聚乙二醇表面改質微過濾 Polyvinylinde Fluoride(PVDF) PEG Surface Modification Microfiltration
日期:	2020
上傳時間:	2022-10-21 10:29:03 (UTC+8)
關聯:	學年度：108， 79頁
顯示於類別:	[環境工程與科學系(所)] 博碩士論文

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