Greenhouse Gases Inventory from Municipal Waste Treatment System in New Taipei City
Date Issued
2014
Date
2014
Author(s)
Jhou, Ying-Jhih
Abstract
Level of waste carbon emissions generated from municipal waste treatments is influenced by different locality, topographic, and climatic conditions. In response to the imminent implementation of the international carbon emissions trading system, it is necessary to understand and analyze local inventory.
This objective of this research is to investigate greenhouse gas emission in relation to different waste treatment systems currently available in New Taipei City from the concept of life-cycle inventory by reviewing available information from Intergovernmental Panel on Climate Change (IPCC), USPEA and Taiwan Environmental Protection Agency.
Based on the available information, the waste transport activity is one of the major sources of carbon emission in New Taipei City, among which household waste transportation and disposal accounts for 5.14×10-2 MTCE/tone of carbon emission, which is more significant than any other waste. Therefore, household garbase should be compressed and compacted during transportation by vehicle engine. In addition, while recycling kitchen waste as feedstock for pigs is widely accepted, carbon emission from recycling kitchen waste was estimated to be 0.090 MTCE/tonne, much higher than composting of 0.056 MTCE/tonne. Therefore, there is room for improvement for the disposal and use of kitchen waste. According to 2011 analysis, net carbon emission from recycling waste was estimated to be -0.579 MTCE/tonne, which was the lowest of all waste treatment systems, making it an ideal approach to waste removal.
While waste incineration is the most efficient method of waste removal, its carbon emission is also the largest of all methods. In order to compare the carbon emission, this research estimates the net carbon emission by deducting the electricity generated from waste incineration by the carbon emission generated in the incineration plant. The result is compared with available information to evaluate the accuracy. Based on the estimation, carbon emission from incineration ranges from 0.030 to 0.092 MTCE/tonne, which is very different from the actual values of 0.059 to 0.223 MTCE/tonne. This shows that the estimation of actual carbon emission by U.S. Environmental Protection Agency (EPA) methodology is significantly underestimated, indicating the estimation value should be corrected according to different locality, topographic, and climatic conditions. Moreover, the greenhouse gas emission coefficients obtained by this study shows that recycling (-0.579 MTCE/tone) is the most effective green house gas reduction approach of all types of waste disposal program. Therefore, it is recommended to collect all recyclable material and only incinerate waste that cannot be recycled.
Lastly, based on the summarization of carbon emission in New Taipei City, the city will be able to achieve higher level and more efficient methods of reducing carbon emission and create a sustainable city.
Subjects
生命週期盤查
新北市
碳排放量
溫室氣體
一般廢棄物處理系統
焚化
Type
thesis
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