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頁籤選單縮合
題名 | 生化需氧量感測系統之研發=Development of a Biochemical Oxygen Demand Sensing System |
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作者 | 蔣志德; 周楚洋; | 書刊名 | 農業機械學刊 |
卷期 | 15:1 民95.03 |
頁次 | 頁37-54 |
分類號 | 368 |
關鍵詞 | 生化需氧量; 生物感測器; 三極式電化學偵測器; 流動注射分析系統; Biochemical oxygen demand; Biosensor; Three-electrode electrochemical detector; Flow injection analysis system; |
語文 | 中文(Chinese) |
中文摘要 | 本研究是利用三極式電化學偵測器、活性污泥菌種及流動注射分析系統建立一生化需氧量(BOD)的感測系統,以檢測廢水之生化需氧量。 感測器採用白金工作電極及Ag/AgCl參考電極,其中白金工作電極用20μL的Nafion薄膜做表面修飾,以減少雜薄。活性污泥置於以壓克力製成的反應糟中心一18mm(L)×2mm(D)的臺槽,樣本利用上述電極及流動注射分析系統在此區域產生反應並進行檢測。試驗時分別建立以人工廢水GG對(Glucose-glutamic acid)及豬糞尿廢水為樣本的標準曲線,從輸出的電流與時間的關係圖,利用終點法(End point)、固定時間法(Constant time)、斜率法I (Quasi-Kinetic I)及斜率法II(Quasi-kinetic II)等四種方式推估BOD的濃度。 為驗證本系統之效能,利用環場取樣的豬糞尿廢水作測試,結果顯示採用GGA建立的標準曲線所測得的BOD濃度,以固定時間法及斜率法I的結果較佳,其檢測的誤差分別為9.0%以及7.7%。而採用豬糞尿廢水建立的標準曲線所測得的BOD濃度,以終點法、固定時間法及斜率法I可以更準確地預估實際廢水之BOD值,其誤差分別為0.8%、2.5%及1.7%。 |
英文摘要 | A biochemical oxygen demand (BOD) sensing system using the combination of three-electrode electrochemical detector, seed obtained from the activated sludge, and flow injection analysis system (FIA) was developed in this study to examine the BOD of wastewater. The detector contained an Ag/AgCl electrode (reference electrode, RE) and a Pt electrode (Working electrode, WE), which was coated with 2μL Nafion to reduce noises. The reactor was fabricated with acrylic plastic, and activated sludge was placed in an 18 mm (L)×2 mm (W)×2 mm (D) cave, in which the tested sample was reacted and detected with the above electrodes through the flow injection analysis system. Standard curves were built from the experimental data for both GGA (Glucose-glutamic acid) synthetic wastewater and swine wastewater by different approaches: end-point, constant-time, quasi-kinetic I, and quasi-kinetic II, respectively. To verify the efficacy of this system, wastewater collected from pig farm was tested. The results showed that, when using the standard curves generated by GGA wastewater, the constant-time and quasi-kinetic I had better performance in estimating the BOD concentration, with the deviations of 9.0% and 7.7%, respectively. In addition, when using the standard curves generated by the swine wastewater, the end-point, constant-time and quasi-kinetic I had much better estimate than the above, with the deviations of 0.8%, 2.5%, and 1.7%, respectively. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。