폐수의 악취측정을 위한 금속산화물 반도체 및 전기화학식 가스센서 어레이 특성 평가
Evaluation of Metal Oxide Semiconductor and Electrochemical Gas Sensor Array Characterization for Measuring Wastewater Odor
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초록
This study aimed to evaluate the characterization of a metal oxide semiconductor and electrochemical gas sensor array for measuring wastewater odor. The sensitivity of all gas sensors observed in sampling method by stripping was 6.7 to 20.6 times higher than that by no stripping, except sensor D (electrochemical gas sensor). The average reduction ratio of sensor signal as a function of initial dilution rate of wastewater was in the order of food plant > food waste reutilization facility > plating plant. The sensitivity of gas sensors was dependent on both the type of wastewater and the dilution rate. The sensor signals observed by the gas sensor array were correlated with the dilution factor (OU) calculated by the air dilution sensory test with several wastewater (r2=0.920~0.997), except the sensor signals of sensor D measured in the plating plant wastewater. It seems likely that the gas sensor array plays a role in the evaluation of odor in wastewater and is useful tool for on-site odor monitoring in the wastewater facilities.
Abstract
This study aimed to evaluate the characterization of a metal oxide semiconductor and electrochemical gas sensor array for measuring wastewater odor. The sensitivity of all gas sensors observed in sampling method by stripping was 6.7 to 20.6 times higher than that by no stripping, except sensor D (electrochemical gas sensor). The average reduction ratio of sensor signal as a function of initial dilution rate of wastewater was in the order of food plant > food waste reutilization facility > plating plant. The sensitivity of gas sensors was dependent on both the type of wastewater and the dilution rate. The sensor signals observed by the gas sensor array were correlated with the dilution factor (OU) calculated by the air dilution sensory test with several wastewater (r2=0.920~0.997), except the sensor signals of sensor D measured in the plating plant wastewater. It seems likely that the gas sensor array plays a role in the evaluation of odor in wastewater and is useful tool for on-site odor monitoring in the wastewater facilities.
참고문헌 (16)
- F. B. Frechen, "Odor emissions of waste-water treatment plants-recent German experiences", Water Sci. Technol, 30(4), pp.35~46 (1994)
- "Ministry of Environment (MOE) Official Methods for Odor Measurement", 29~45 (2014)
- P. J. Bliss, "Odour measurement-factors affecting olfactometry panel performance", Water Sci. Technol., 34(3), pp.549~556 (1996)
- S. J. Park, "The regulation and measurement of odor in Korea", Odor Measurement Review, Office of Odor, Noise and Vibration. Environmental Management Bureau, Ministry of Environment, pp.69~74 (2003)
- M. Brattoli, "Odor detection methods : Olfactometry and chemical sensors", Sensors, 11, pp.5290~5322 (2001)
- C. J. Tsai, "Single SnO2 gas sensor as a practical tool for evaluating the effi-ciency of odor control engineering at food waste composting plants", Sens. Actuator B-Chem, 169, pp.248~254 (2012)
- K. Gupta, "Electronic odor measurement and sensing using E-nose", Int. J. Sci. Eng. Res, 4, pp.1~9 (2013)
- W. Bourgeois, "Development of a sensor array based measurement system for continuous monitoring of water and wastewater", Sens. Actuator B-Chem, 88, pp.312~319 (2003)
- D. Hodgins, "The electric nose and its application to the manufacture of food products", A. Auto. Chem, 17(5), pp.179~185 (1995)
- P. J. Hobbs, "Assessment of odours from livestock wastes by a photoionization detector, an electronic nose, olfactometry and gas chromatography-mass spectrometry", J. Agric. Eng. Res, 60, pp.137~144 (1995)
- T. M. Misselbrook, "Use of an electronic nose to measure odour concentration following application of cattle sulrry to grassland", J. Agric. Eng. Res, 66, pp.213~220 (1997)
- R. M. Stuetz, "Assessment of odours from sewage treatment works by an electronic nose, H2S analysis and olfactometry", Water Res, 33(2), pp.453~461 (1999)