2010-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/709729摘要：養豬場廢水為高濃度之有機廢水，處理系統所產生之過剩污泥(包括厭氣污泥與活性污泥)，如果持續淤積在處理槽體內，將會嚴重影響廢水處理效率，使廢水處理廠之放流水無法符合環保署之標準。廢水處理系統之過剩污泥處理成本，約佔總廢水處理成本之30%。活性污泥中許多微生物會將廢水中有機物質轉變成聚羥基烷酯 (PHA)；聚羥基烷酯(PHA)為製造生物可分解塑膠之主要原料。此外，中鏈聚羥基烷酯(mcl PHA)與聚丁基烷酯(PHB)經過酸催化水解之酯化反應後會分別產生生物燃料「3HAME」與「3HBME」。因此，本計畫擬利用養豬場廢水處理之污泥生產生物塑膠原料(PHA)，研究不同養豬場廢水濃度及其他外加碳源等因子對於PHA之生產效 率，同時由污泥中分離出可生產PHA之菌株。污泥微生物細胞中之PHA可以化學方式分離取得，若經過甲基酯化反應可以製成生物燃料(3HAME)。此計畫成果將可以使養豬場廢棄之過剩污泥進行資源化，並回收利用成生物材料或生質燃料。<br> Abstract: Piggery wastewater is high organic content wastewater. Accumulation of excess sludge (anaerobic sludge and activated sludge) in piggery wastewater treatment systems can affect treatment efficiency significantly. It results in failing to meet the EPA’s effluent standards. The cost for excess sludge disposal is approximately 30% of total operation cost. Several microorganisms are capable of oxidizing organics to produce poly-hydroxyalknoates (PHA). PHA is the main material of biodegradable plastic. Additionally, medium chain length PHA (mcl PHA) and poly-R-3-hydroxybutyrate (PHB) can be esterified to become 3-hydroxyalkanoates methyl ester (3HAME) and poly-R-3-hydroxybutyrate methyl ester (3HBME) via acid-catalyzed hydrolysis. Thus, the objective of this project tends to produce PHA from excess sludge of piggery wastewater treatment facilities by means of studying production efficiency under various wastewater concentrations and extra carbon addition conditions. By the way, PHA-producing bacteria will be isolated for further utilization. Microbial PHA in sludge can be obtained by chemical approaches and methyl esterified to become bio-fuel (i.e. 3HAME). The achievements of this project will be applied to recycle excess sludge and produce bio-material or bio-fuel.養豬場污泥聚羥基烷酯生物燃料生物塑膠Pig farmSludgePoly-hydroxyalknoates (PHA)Bio-fuelBio-plastic