|摘要: ||垃圾焚化產生的飛灰需要處理至低於毒性特性溶出程序(TCLP)溶出標準才能進掩埋場或再利用，因新北市地狹人稠，大量的飛灰若選擇以水泥固化再掩埋方式處理，在未來將會導致掩埋地不敷使用。本研究所探討的坡縷石穩定製程(黃郁凱，2015)，其研磨後穩定化物通過再利用管理標準，但仍處於實驗室階段且其對新北市生態系統品質(Ecosystem quality)、人體健康(Human health)、資源(Resources)、氣候變遷(Climate change)以上四層面的影響及進入實廠可行性待考量，因此以情境分析方式進行生命週期評估以探討以上四層面的影響，以IMPACT 2002+為衝擊評估方法並選擇標準化方式為損害層級類別，由生命週期評估軟體GaBi ts運算並以廢棄物管理為系統邊界，功能單位為在新北市處理1 ton垃圾焚化飛灰，使飛灰穩定化重金屬符合再利用管理標準。本研究將衝擊評估分成三個部分：第一部分為坡縷石穩定製程中各程序比較，第二部分為第一部分各程序加入再利用成紅磚情境再作各程序比較，第三部分為第二部分的衝擊評估結果與(黃泰元，2015)固化掩埋製程比較。第一部分各程序的最大考量層面皆為可吸入性無機物對應損害類別層級之人體健康，係以台灣電力製程所排放可吸入至呼吸道粒狀污染物的潛在風險最大。第二部分研磨3小時前最大考量面為全球暖化500年對應損害類別層級之氣候變遷，係以窯燒程序燃燒生煤所排放二氧化碳、再利用成紅磚情境之機具耗用柴油、台電以火力發電為主要供電來源，以上三項影響氣候變遷的潛在風險最大；研磨3小時後最大考量層面改為人體健康，衝擊評估結果與第一部分相同。第三部分將(黃泰元，2015)固化掩埋製程的衝擊評估結果和第二部分相比，除了氣候變遷之外，人體健康、資源、生態系統品質與加總後四層面的影響數據均以固化掩埋製程較大。|
MSWI fly ash need to be processed so that its toxicity is below the toxicity characteristic leaching procedure (TCLP) standard before being accepted into a landfill or reused. Currently there are no appropriate ways of reusing the tons of fly ash stabilized by cement solidification and landfill is its final disposal. However, there will not be adequate room for landfill, since New Taipei City is densely populated. The stabilization process discussed in the research can use the resultant as raw materials for potential products, but its effects on the Ecosystem quality, Human health, Resources, Climate change in New Taipei City and the feasibility of transforming the resultant into products are unknown. Accordingly, the above four effects are discussed based on the life cycle assessment by the scenario analysis. In the procedure of assessment, the impact assessment method for IMPACT 2002+, the GaBi software, the system boundary for waste management, and the functional unit for stabilized one ton of MSWI fly ash in New Taipei City are chosen so that the resultant can meet the standard of reuse. The impact assessment is separated into three parts: in the first and second parts, the comparison of the results of the impact assessment for each procedure is made, but in the second part is added the scenario of the reuse of the resultant as the red brick, and in the third part the impact assessment for the second part and the process for stabilization of MSWI fly ash by cement solidification then sanitary landfill is compared. Of the four effects in each procedure discussed in the first part, the greatest is the effect on Human health, which, according to research, is contributed mostly by Taipower. The major effect of the four effects in the second part in the procedure of transforming the resultant into red bricks is Climate change, but when the milling time is extended to more than 3 hours, the major effect in each procedure changes from Climate change to Human health which is the same result as the first part. The major effect of the four effects in the third part in the process of cement solidification is Human health, and second to it is Climate change. Except Climate change, the other three effects of the process of cement solidification is greater than those of the other process, and the total impact is larger too.