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研究生:吳新富
論文名稱:利用生物濾床去除苯乙烯與丁二烯廢氣之研究
論文名稱(外文):Control of Waste Gases of Styrene and Butadiene by Biofilter Technique
指導教授:高銘木高銘木引用關係
學位類別:碩士
校院名稱:國立成功大學
系所名稱:環境工程與科學系
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:1997
畢業學年度:85
語文別:中文
論文頁數:110
中文關鍵詞:生物濾床苯乙烯丁二烯廢氣
外文關鍵詞:BiofilterStyreneButadieneWaste gas
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  苯乙烯(styrene)及丁二烯(1,3-butadiene)為合成橡膠、丙烯?-丁二烯-苯乙烯(acrylonitrile-butadience, ABS)聚合樹脂之重要原料,且其在環境大氣中逸散、排出時會對人體之健康、財物等造成危害。因此極需加以防治。
  本研究乃以豬糞堆肥及豬糞堆肥混合活性碳為濾材之生物濾床(內截面積為0.0113m2, 總填充高度0.2m)並植種工業污泥或丁二烯分解菌,針對苯乙烯、丁二烯進行個別及同時進氣處理試驗:探討其對苯乙烯、丁二烯單一進氣處理時之去除率、有機負荷及最大有機處理能力等,另外並試驗在同時進氣時,是否會有加成或抑制作用的情形;藉此找出適用於處理苯乙烯、丁二烯單一及同時進氣時之濾料配製選擇基準。
  在苯乙烯單一進氣處理部份,堆肥植種工業污泥之濾床在進流苯乙烯濃度Cs=20-840 ppm,停留時間為2.26min之操作條件下,去除率約為70-100%;而有添加活性碳之濾床之去除率約為65-100%,各濾床之最大有機處理能力約為75±10 g/m3.hr。試驗結果顯示,在堆肥中添加活性碳可以使濾床對突增之濃度具有較好的緩衝能力,但對於濾床之去除率及有機處理量並無改善之效果。
  在丁二烯單一進氣處理部份,堆肥添加活性碳並植種純菌之濾床在進流丁二烯濃度CB=40-1420 ppm,停留時間為2.26min之操作條件下,去除率約為70-100% ;最大有機處理能力約為65 g/m3.hr,高於其他濾床。試驗結果顯示,在堆肥濾床中添加活性碳並植種純菌有助於提昇丁二烯之去除率及最大有機處理能力。
  在苯乙烯及丁二烯同時進氣部份,堆肥濾床添加活性碳並植工業污泥及丁二烯分解菌之濾床在苯乙烯進流濃度Cs=80-270 ppm,丁二烯進流濃度CB=40-430 ppm,停留時間為2.26 min 之操作條件下,苯乙烯之去除率約為95%,而丁二烯之除率則隨著進流丁二烯濃度提高至220ppm以上,由95%下降至25%。試驗結果顯示,在同時進氣處理時,苯乙烯與丁二烯會互相抑制,且以苯乙烯抑制丁二烯的情形較明顯。
  Styrene and butadiene are used in large quantities by the chemical industry, mainly as a starting material for synthetic polymers such as polystyrene, polybutadiene, and styrene-butadiene rubber. Transfer of these compounds to plant air typically occurs during drying operation at ABS plastics manufacturing facilities. Airborne emissions of stgrenne and butadiene often cause problems, even at low concentrations, due to the malodorous and hazardous properties of these compounds.
  The purpose of this research is to evaluate the elimination efficiency, total organic load, and elimination capacity of styrene and butadiene by various types of biofilter systems. capacity of styrene and butadiene by various types of biofilter ysytems. The pig waste compost and pig waste compost mixed with activated carbon seeding with activated sludge or butadiene degrading bacteria were used as the materials of biofilters.
  For styrene removing experiments, it had shown that no matter if the biofilter media were mixed with activated carbon or not, the elimination efficiency and elimination capacity of these biofilters have no obvious difference. Under 20-840 ppm of inlet gas concentration, and 2.26 minute of residence time, the elimination effciiencyof the pig waste compost biofilter was found between 70-100%, and the performance of pig waste compost mixed with activated carbon filters were found between 65-100%. The maximum elimination capacity of the biofilters were found between 75± 10 g/m3.hr.
  For butadiene removing experiments, the biofliler of pig waste compost mixed with activated carbon and seeding with butadiene degrading becteria had the maximum elimination efficiency and capacity. Under 40-1420 ppm of inlet gas concentration, and 2.26 minute of residence time, the elimination efficiency was found between 70-100%, and the maximum elimination capacity was about 65 g/m3.hr. The results showed that adding activated carbon to pig waste compost and seeding with butadiene degrading bacteria can help arising the elimination efficiency and capacity of butadiene.
  For mixed styrene and butadiene removing experiments, the pig waste compost mixed with activated carbon, seeding with activated sludge and butadiene degrading bacteria filter had shown the 95% elimination efficiency of srene under 80-270 ppm of styrene and 40-430 ppm of butadiene inlet concentration and 2.26 minutes of residence time. However, the elimination efficiency of butadiece significantly decreased from 95% to 25% while the inlet concentration of butadiene increased to above 220 ppm. This result indicated that the styrene appeared apparent inhibition effect to the butadiene in the biofilter.
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