| Summary: | 碩士 === 嘉南藥理大學 === 環境資源管理系 === 108 === The ash content in municipal solid waste (MSW) is a very important parameter in the operation and management of the mass burn incinerator . However, the ash is the residue obtained by the high temperature burning of the waste. The higher the ash ratio, the higher the bottom ash will be, so ash analysis is indispensable in the study of the nature of MSW. In this study, the relative percent difference (RPD) was used to compare the ash analysis difference between the weighted mixed samples and standard method sample. Furthermore, the effect of the particle size in the preparation of the analysis samples on the ash contents were also examined. In addition, the correlations between the physical composition and the ash content were also evaluated by the pearson correlation coefficient analysis.
It was found that the RPDs of the ash contents between the weighted mixed samples and standard method were 7.48% and 8.56% for season 1 and season 2, respectively. The RPDs does not exceed the quality control range of sample repeat analysis (RPD10%). In the comparison of dry basis ash content of different particle sizes prepared samples, it was found that the average RPDs between 2mm and 1mm were 16.69 and 17.61% for season 1 and season 2, respectively, and exceeded the quality control range of sample repeat analysis (RPD10%). Additionally, it was found that the physical composition of dry basis kitchen waste was significantly positively correlated with dry basis ash (r=0.406, p<0.01). That is to say, when the proportion of kitchen waste in the physical composition increases, the ash content also increases.
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