蔣本基2006-07-262018-06-282006-07-262018-06-282005-07-31http://ntur.lib.ntu.edu.tw//handle/246246/22153It has been demonstrated that nature organic matter (NOM) in raw water can react with the chlorine to form disinfection byproducts (DBPs), which may be carcinogenic or mutagenic. Evidence shown that resorcinol structures in aquatic humic materials are the major THM precursor in colored waters (Reckhow et al., 1990). On the other hand, several studies suggested that aliphatic carboxylic acids, hydroxybenzoic acids, phenols and pyrrole derivatives are reactive substrates of organic precursors for THMs formation (Korshin et al., 1997). Most organic matters responsible for major DBP precursors in source water of Taiwan are small to medium compounds, with a molecular weight near or less than 1 K Da (Chang et al., 2001; Chiang et. al., 2002). The goal of this research is to determine the efficiency of nanofiltration in removing model compounds of resorcinol, phloroglucinol and m-hydroxybenzoic acid (chosen as major small molecular DBP precursors) and tannic acid (chosen as major medium molecular DBP precursors). The experiments were carried out with various pH values, solute concentrations and the existence of calcium to evaluate how solute type affects the result of filtration tests, and the retention mechanisms of these target compounds are also studied.application/pdf171330 bytesapplication/pdfzh-TW國立臺灣大學環境工程學研究所reporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/22153/1/932211E002013.pdf