微生物氧化方式對廢水處理廠VOC與臭味之去除效率影響因素研究

VOC and odor removal efficiency factors study for Bio-oxidation in solvent waste water treatment plant

王春明(Chun-Ming Wang)

指導教授 ： 林啟瑞 ； 蘇春熺

國立臺北科技大學/機電學院/機電整合研究所/碩士(2006年)

摘要

半導體業及光電業為台灣主要高科技產業，製程使用多種有機溶劑易揮發於空氣中，廢氣排放時雖已經各種處理達法定排放標準，但排氣中某些成分濃度雖低，卻足以引起嗅覺上的不適。
相對於各種處理法而言，生物法處理具有低耗能、操作維護費低等優點。其處理原理即是利用微生物代謝獲取能量及產生新細胞的過程需要分解基質作為營養源，而廢氣中的揮發性有機物（VOCs）正好提供微生物營養源，微生物將這些有機物(VOCs)轉化為水氣及二氧化碳等清淨氣體排至大氣。
本研究方法為以國外BRI公司的生物處理經驗為參考及國內相關文獻回顧，續而進行軟硬體之建置。工作內容包括設備之建置（自動控制系統、模組化可擴充式槽體等設施）、設備之操作及控制之參數、微生物之培養及馴化、處理效率之提升等，提供微生物良好的生存環境，以利廢氣異味之處理。
由實驗結果顯示，微生物適應環境後，入口濃度越低，對應之處理效率越高；入口濃度越高，其處理效率有降低之趨勢。降低pH的確造成處理效率下降。槽內溫度過高對處理效率可能有不良影響。短時間內劇烈濃度變化將造成處理效率降低。

關鍵字

微生物濾床 ； 微生物滴濾塔 ； 微生物洗滌器 ； 微生物氧化

並列摘要

The semiconductor and electric phototropic are major high technology industries in Taiwan. Their product processes use many kinds of solvent and exhaust to atmosphere. Although, the exhaust stream have been treated to meet EPA regulation by air pollution controlled device before exhaust to atmosphere. But the air stream remain some component to make some odor even its concentration is lower. It will let the air fill inconvenience smell.
Biofilter have lower energy consumption and lower operation cost benefits compare the other kinds of disposal methods of VOC abatement system. Bio•oxidizers are a living community of fungi and bacteria housed in a biomatrix (compost type material) that utilize Carbon as their primary food source. The principle of Biofilter that contaminated air is introduced to the biofilter and the Carbon molecules are captured and digested by the microbial population. They in turn exhaust carbon dioxide and water vapor to the atmosphere.
This research was referring to BRI company experiences and many research papers in bio-trickling and Biofilter field. Then we had build software and hardware of the pilot unit. The research work was including the equipment construction (automatic control system, modular tank design, etc), equipment operation and parameters, fungi and bacteria tame and domesticate, enhance the removal efficiency. It will make the good environmental for the bacteria and fungi to treat the odor stream.
The test result to show the inlet low concentration to get high removal efficiency when the bacteria suitable the environment of tower. Inlet high concentrations will influent the removal efficiency. To adjust the value of PH will decrease the removal efficiency. The high temperature will get bad removal efficiency for the Biofilter tank. The inlet concentration to have big differential will decrease the removal efficiency.

並列關鍵字

Biofilter ； Bio-trickling tower ； Bioscruber ； Bio-oxidation ； VOC volatile organic compounds ； WWTP waste water treatment plant

參考文獻

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[4] T. D. Reynolds ＆ P. A. Richards, Unit Operations and Processes in Environmental Engineering, Boston, PWS Publishing Company, 1995.

參考文獻

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[3] 張錦松譯，環工單元操作，台北，高立圖書有限公司，1998。