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Effects of the Characteristics of Influent Wastewater on Removal Efficiencies for Organic Matters in Wastewater Treatment Plants  

Lee, Tae-Hwan (Department of Earth and Environmental Sciences, Sejong University)
Park, Min-Hye (Department of Earth and Environmental Sciences, Sejong University)
Lee, Bomi (Department of Earth and Environmental Sciences, Sejong University)
Hur, Jin (Department of Earth and Environmental Sciences, Sejong University)
Yang, Heejeoug (Han-River Environment Research Center)
Publication Information
Journal of Korean Society on Water Environment / v.25, no.5, 2009 , pp. 674-681 More about this Journal
Abstract
Characteristics of organic matters (OM) in wastewater and the removal efficiencies were investigated using the influent and the effluent samples collected from 21 wastewater treatment plants. The OM characteristics investigated included biodegradability, humic content, specific UV absorbance (SUVA), the distribution percentage of refractory OM (R-OM), and synchronous fluorescence spectra. The types of wastewater (sewage, livestock waste/night soils, industrial waste) were easily distinguished by comparing the synchronous fluorescence spectra of the influent wastewater. The prominent peak of protein-like fluorescence (PLF) was observed for livestock waste/night soils whereas sewage exhibited a unique fluorescence peak at a wavelength of 370 nm. Irrespective of the wastewater types, the distribution percentage of R-OM increased from the influent to the effluent. Livestock waste/night soils showed the highest removal efficiency among all the three types of wastewater. There was no statistical difference of the removal efficiency between a traditional activated sludge and biological advanced treatment processes. Removal efficiency based on dissolved organic carbon DOC presented good correlations with the distribution percentage of R-OM and fulvic-like fluorescence (FLF) of the influent. The prediction for DOC removal efficiency was improved by using multiple regression analyses based on some selected OM characteristics and mixed liquid suspended solid (MLSS).
Keywords
Fluorescence; Multiple regression analysis; Specific UV absorbance; Treatment efficiency; Wastewater organic matter;
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Times Cited By KSCI : 2  (Citation Analysis)
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