| Summary: | 碩士 === 國立臺北科技大學 === 環境工程與管理研究所 === 99 === The discussion in this research is aimed at the fly ash which is produced in the respect of firepower generating station. The recounting is as follow: 1. With regard to the fly ash produced from firepower generating stations, researches on its physical and chemical characteristic are processed. 2. Analytic Hierarchy Process (AHP) is applied to the setting up models of recycling products style-selecting, as the base of selecting. 3. Through the experts’ questionnaire, the best style of fly ash recycle products is chosen.
This research carries on questionnaire evaluation on the importance about AHP to the style-selecting of fly ash resource recycle products from firepower generating station, selects the styles by 20 environmentally friendly engineering experts, discusses the sequences of resource recycle applied products, so that choose the best applied products. The selecting is from the view of the practical evaluating factors of firepower generating station and fly ash recycle, and in the view of 4 respects: technological reliability, engineering benefit, engineering efficiency, environment impact. Evaluations are processed to the commonly-used applied products of firepower generating station fly ash recycle, such as: environmentally friendly cement, man-made aggregate, composite fertilizer, ceramic technology, man-made fish shelter and material of electric arc furnace steelmaking.
Based on AHP method, after the objects are determined, this research hands out 20 copies of questionnaire, recalls 20 copies back, with 100% of recovery. The final object is through collecting the idea of experts, to find out the sequence weighted value proportion of comparative importance of each evaluating factors, and determine the consistency ratio (I.R.) between the comparative matrix of various levels and the top class is less than 0.10. Whereat the best firepower generating station fly ash resource recycle product is chosen. The questionnaire discovers: all I.R. indexes are no more than 0.1, that is, according to the consistency. So it accords with the reliability and validity of questionnaire.
Based on the results inputted by software Expert Choice11 we know: relative to the 4 evaluating factors, the weighted value sequence of 6 applied products is: firstly environment impact (46.6%), secondly technological reliability (28.6%), thirdly engineering benefit (14.8%), fourthly engineering efficiency (10.0%), which show that the most importance is if the producing of these 6 applied products with fly ash will result in environmental pollution, secondly importance is if the technological reliability of producing these 6 kinds of products, then is if the producing engineering can achievement economic benefit, finally is the efficiency of applying products, which proves that if the fly ash products will applied in practice widely is not the most importance.
Based on the results inputted by software Expert Choice11 we know: relative to the 6 applied products, weighted value sequence of the 4 evaluating factors is: firstly environmentally friendly cement（28.8％）, secondly man-made aggregate（18.0％）, thirdly composite fertilizer（16.7％）, fourthly ceramic technology（13.5％）, fifthly man-made fish shelter（12.3％）, sixthly material of electric arc furnace steelmaking（10.6％）, which shows that the environmentally friendly cement is better than other applied products, with respects to the technological reliability, engineering benefit, engineering efficiency, environment impact. Environmentally friendly cement is the best choose of fly ash production, then the second man-made aggregate; and the sequence of environmentally friendly cement in the 4 factors is: firstly engineering benefit（31.5％），secondly environment impact（30.3％），thirdly engineering efficiency（29.9％），fourthly technological reliability（24.5％），which shows that the most importance of producing environmentally friendly cement is if it can achieve high economic efficiency, whereas the technology is not the key point；While the sequence of man-made aggregate in the 4 factors is: firstly engineering efficiency（20.0％），secondly engineering benefit（18.5％），thirdly environment impact（18.2％），fourthly technological reliability（16.7％），which proves that the most importance of producing man-made aggregate is if it can be applied to the practice widely, whereas the technological reliability is considered at last.
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