Detection of COD in the Wastewater Treatment Process Based on Fluorescence Excitation-Emission Matrix Spectrometry

Abstract:

In the wastewater treatment process, it is necessary to detect the concentrations of organic matter in order to monitor the operation and adjust the process parameters. Based on fluorescence excitation-emission matrix spectrometry, Chemical oxygen demand (COD) of effluent wastewater in the primary sedimentation tank, the secondary sedimentation tank and the final sedimentation tank of Hengdian Wastewater Treatment Plant, Zhejiang Province, is detected respectively based on fluorescence excitation-emission matrix spectrometry. In order to compare the modeling performance, principal component regression (PCR), partial least squares (PLS), parallel factor analysis (PARAFAC) and multi-way partial least squares (N-PLS) are respectively used to build the calibration models between the fluorescence spectrometry and COD. Experimental results show PLS is better than PARAFAC and N-PLS in the aspect of modeling performance for detecting COD in the wastewater.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 599-602
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.599
• Online since: May 2012
• Authors: Shu Xin Du, Yuan Qing Wu, Zhi Bao Yuan
• Keywords: Chemical Oxygen Demand (COD), Fluorescence Excitation-Emission Matrix (EEM) Spectrometry, Wastewater Treatment Process

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