Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Development of Continuous Real-time COD Measurement Sensor with Double Beam and Multiple Wavelength Analysis

더블 빔 구조, 다파장 분석을 적용한 연속식 실시간 COD 측정 센서 개발

  • Lee, Joon-Seok (Research Institute, DongYang Chemicals Co., Ltd.) ;
  • Shin, Daejung (Technology Human Resource Support for SMEs Center, Korea Institute of Industrial Technology) ;
  • Hyoung, Gi-Woo (Research Institute, DongYang Hitech Industry Co., Ltd.) ;
  • Ryu, In-Jae (Research Institute, DongYang Hitech Industry Co., Ltd.)
  • 이준석 ((주)동양화학 부설연구소) ;
  • 신대정 (한국생산기술연구원 중소기업기술인력지원단) ;
  • 형기우 (동양하이테크산업(주) 부설연구소) ;
  • 류인재 (동양하이테크산업(주) 부설연구소)
  • Received : 2014.07.14
  • Accepted : 2014.07.28
  • Published : 2014.07.31
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Abstract

At present, the index of chemical oxygen demand (COD) is widely used as an indicator of organic water pollution with biochemical oxygen demand (BOD). But, traditional COD measurement method are not only with various chemical reagents exhausted, but also long time consumed, the operation procedure and the modification are much professional. This paper reported a novel COD measurement system using double-beam and multiple wavelength analysis UV-VIS spectrometries. It consists of pulsed xenon lamp, two-way optical fiber, optical switch, spectrometer and main processor. Proposed COD measurement system obtains any spectral information of water sample (KHP standard sample and two river water and wastewater) and reference sample (distilled water) in the range of 200~520 nm, corresponding to the COD concentration from 0 to 300 mg/L through calculating the UV absorbance. The system show improved precision and can work continuously fast at time interval about 25 seconds.

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References

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