Analysis of the Chromophoic Dissolved Organic Matter in Process Water by EEMs and PARAFAC

By: Yoshihiko KAWAGUCHI, Reiji KOJIMA

3 January 2016

In sewage and industrial wastewater treatment facilities, monitoring the concentration of organic material is important for operation and maintenance. However, even if the Total Organic Carbon (TOC) in the wastewater is the same, it is known that there will be differences in the water quality after the process. For that reason, it is important to understand the component groups that make up the Dissolved Organic Matter (DOM), as well as their prevalence. In this study, we measured the Chromophoric Dissolved Organic Matter (CDOM) in each sample using three-dimensional Excitation-Emission Matrices (EEM) and the Parallel Factor Analysis Method (PARAFAC), and analyzed the behavior of each component group in wastewater treatment processes using a membrane bioreactor method. We then compared our results with Specific Ultraviolet Absorption (SUVA) and PARAFAC analysis results, which are used as relative indicators of recalcitrant organic matter.

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