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Treatment Efficiency and Organic Matter Characterization of Wastewater through Activated Sludge Process and Advanced Wastewater Treatment Process  

Hong, JiHea (국민대학교 건설시스템공학부)
Sohn, Jinsik (국민대학교 건설시스템공학부)
Publication Information
Journal of Korean Society of Water and Wastewater / v.18, no.6, 2004 , pp. 807-813 More about this Journal
Abstract
Wastewater was treated by two different treatment processes; activated sludge process and advanced wastewater treatment process (KNR process) using lab-scale experiment. Two treated wastewater showed good treatment efficiency of organic matter removal, up to 90% removal. Nitrogen and phosphorus were not effectively removed though activated sludge process, while KNR process showed good removal efficiency of nitrogen and phosphorus; 56% nitrogen removal and 95% phosphorus removal. KNR process showed better removal efficiency of organic matter, nitrogen, and phosphorus compared to activated sludge process. Organic matter characterization was tracked though measurement of UV scan, SUVA, and XAD fractionation. Treated wastewater showed higher SUVA value than wastewater influent, indicting less aromatic characteristic of organic matter. XAD fractionation showed hydrophilic fraction decreased though wastewater treatment, suggesting microbes preferentially digest hydrophilic and aliphatic molecules rather than hydrophobic and aromatic molecules of organic matter.
Keywords
Activated sludge process; KNR process; Treatment efficiency; Organic matter characterization; SUVA; XAD fractionation;
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