| Summary: | 碩士 === 大仁科技大學 === 環境管理研究所 === 100 === The various units in the water treatment currently use total organic carbons (TOC) as a control parameter of organic content. This ways cannot make the operators in water plants to realize the differences of characters for organic matter removed by operational units. As the advantages for Excitation Emission Fluorescence Matrix (EEFM), including little sample used, without pretreatment and fast analysis, EEFM has the possibility to be developed the real time tool to monitor the variations of organic matter characters. In this research, three high-order water plants, CCL, FS and KT, were studied from August, 2010 to March, 2011. EEFM and UV, two optical instruments, were used to investigate variations of organic matter characters in various operational units. For some filtering units, molecular weight and amino acids were respectively analyzed for influent and effluent. This goal was to investigate the effects of microbial activities on the filters.
Three significant peaks at Peak A：240-260/ 400-430 nm for folic acid-like , Peak B：220-230/ 300-350 nm and Peak C：270-280/ 340-350 nm for protein-like were all found in all samples, including source water and the effluent from all various units. Source waters taken from three plants have similar organic matter characters, revealing that humic acid-like was major composition followed by the soluble microbial by-product-like. The third dominant matter was fulvic acid-like. The contents of aromatic protein tyrosine and aromatic protein related with BOD were closed and less than the other organic composition. Regarding to NPDOC removal in fast filter beds in three plants, all data show it could be removed except for KT water treatment. On the membrane filter systems, effluent from UF filter in KT plant had more NPDOC than influent, but LPRO filter could remove NPDOC. About O3/BAC units, one samples taken from CCL plant could not remove NPDOC, however, FS plant could have ability. The samples taken from the water treatment on March, 2011 reveals that NPDOC removal by fast filter in CCL plant was better than that in FS plant, but the lowest values happened in KT plant. At the same time, NPDOC could be removed by UF filter, but high removal could be completed by LPRO. O3/BAC unit has no ability to remove NPDOC.
The molecular weight for organic matter and amino acids from various units were compared for all filter units. After the O3/BAC will result the increase of high molecular weight organic contents. This phenomenon was more significant in FS plant than CCL plant. In KT plant, UF unit had no ability to remove high and low molecular weight organic matter, but LPRO unit could decrease the content of different organic matter with high and low molecular weight. Based on the results of SFS test measured from the influent and effluent from fast filter, those indirectly confirm the important role that amino acids play. The major amino acids were Aspartic (Asp.)、Glutamine(Glue.) 、Serine (Ser.) 、Argentine (Arg.) 、Heroine (Thru.) and Almandine (Ala.). Among them, the dominant species were Thr. and Ser.. The species of amino acids from fast filter and O3/BAC units were more than those of UF and LPRO units.
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