- 學位論文
生質廢棄物沼氣發電建廠可行性評估-以雲林縣為例
Biomass Waste Biogas Generation Plant Feasibility Assessment : a case study of Yunlin County
摘要
雲林地區為本省畜牧業大縣，養豬業為雲林縣主要農業經濟收入之一，但其養豬廢水問題，不斷造成地方民眾陳情，也影響雲林地區水與土壤生態環境。因此本研究以廢棄物生質料進行再利用產氣發電研究，藉以改善豬糞生質廢棄物所造成的環境問題，落實永續再利用之觀念，將垃圾變黃金，評估豬糞回收再利用於生質發電利用效能與經濟效益方案，並規劃再利用標準流程，以得最佳效益。 本論文主要分兩部分：第一部分為投入之廢棄物量之產肥產電量及經濟效益分析比較，第二部分根據沼氣發電及沼氣提純2個方案進行沼氣再利用廠之可行性評估。研究結果顯示，以年投入8萬公噸原物料方案最佳，其沼氣發電年產電量可達428萬kWh，總熱能產量51萬kWh；另探討減碳效益，本研究結果以廢污水處理量計算，10萬公噸原物料之研究方案，減少廢污水處理量之減碳效益約1.9萬公斤的CO2；若以發電量計算，沼氣發電部分10萬公噸原物料之研究方案每年之減碳效益約285萬公斤的CO2，若以沼氣提純發電量計算，10萬公噸原物料每年之減碳效益約298萬公斤的CO2。
並列摘要
Yulin is the prominence of developing animal husbandry of Taiwan. And pig farming provides most of Yulin County’s agricultural income. But the waste water of pig farming not only causes the soil and water contamination and has serious influences of local citizens’ life. The topic of this thesis is to make a research of biodegradable waste reuse. By transforming swine manure into biomass energy, the pollution can be solved. To assess the project of biogas electricity generation, we can get the best result which is both good for our economy and environment. This thesis has two parts. The first part is the analysis of the amount of waste produced fertilizer production capacity and economic benefits. The second part is to assess the feasibility of bio-gas power plant according to the two programs of biogas electricity production and biogas purification. The results show that it is the best to put in 80 thousand tons of raw material per year. The electricity production of biogas can reach up to 4.28 million kWh and the CHP can attain 510 thousand kWh. Biogas electricity is also helpful to carbon reduction. By enforcing a 100-thousand-ton raw material reusing research project is able reduce 19 thousand tons of carbon dioxide comparing with waste water treatment. Biogas electricity generation and biogas purification reduces 2.85 million and 2.98 million kilograms of carbon dioxide.