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基于生物傳感器的在線生化需氧量測量儀研究
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“十一五”國家科技支撐計劃資助項目(2008BAJ08B13-01)


On-line Biochemical Oxygen Demand Measuring Instrument Based on Biosensor
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    摘要:

    為彌補經(jīng)典的五日稀釋接種法(BOD5)耗時較長，不能及時反映水質(zhì)污染狀況的不足,，設(shè)計了基于微生物傳感器的生化需氧量(BOD)在線測量儀器。BOD生物傳感器是溶解氧傳感器和微生物膜的結(jié)合,，利用微生物膜傳感器測定BOD是一種快速有效測定水中可生化降解有機物的方法,。論述了BOD生物傳感器的工作原理，給出了在線BOD測量儀器的整體結(jié)構(gòu)，設(shè)計了連續(xù)進樣系統(tǒng)和信號處理電路，闡述了自動標定,、溫度控制、數(shù)據(jù)處理和有機物濃度計算的方法,。設(shè)計的在線BOD測量儀器對標準值的相對誤差在±5%以內(nèi),，與經(jīng)典的稀釋接種法比較有較好的相關(guān)性,，能夠用于廢水中可生化降解的有機物的快速測定和評價,。

    Abstract:

    In order to make up for the deficiency of traditional method of 5 d for dilution and seeding method (BOD5), the on line biochemical oxygen demand(BOD) measuring instrument based on microbial sensor was designed. BOD biosensor was the combination of dissolved oxygen electrode and microbial film. Measurement of BOD using microbial membrane sensor was a fast and effective way for measuring biodegradable organic compounds in water. The principle of BOD biosensor was discussed. Whole structure of on-line BOD measuring instrument was given. The continuous sampling system and sensor signal process circuit were designed. The methods of automatic calibration, temperature control, and data process and concentration calculation of organic compounds were expounded. The relative errors of designed BOD on-line instrument with standard samples were less than 5%, and had a better correlation with the method of dilution and seeding. The designed instrument could be used for rapid determination and evaluation of biodegradable organic compounds in wastewater.

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劉升,郜洪文.基于生物傳感器的在線生化需氧量測量儀研究[J].農(nóng)業(yè)機械學(xué)報,2013,44(Supp2):231-235. Liu Sheng, Gao Hongwen. On-line Biochemical Oxygen Demand Measuring Instrument Based on Biosensor[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(Supp2):231-235.

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  • 在線發(fā)布日期: 2013-10-21
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