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Study on Removal of DOC for Effluent from Nitrification and Denitrification Process with Zeolite by Combined Process of Coagulation and UF Membrane  

Han, Jang Hyuk (인하대학교 환경토목공학부)
Yoon, Tai Il (인하대학교 환경토목공학부)
Cho, Kyung Chul (인하대학교 환경토목공학부)
Song, Jea Yong (인하대학교 환경토목공학부)
Publication Information
Journal of Korean Society of Water and Wastewater / v.19, no.5, 2005 , pp. 537-546 More about this Journal
Abstract
This study was carried out to evaluate EPS and SMP variation of sludge and effluent in nitrification and denitrification process with zeolite addition, a possible reduction of effluent DOC by URC(Ultra Rapid Coagulation) process. As a biological wastewater treatment result, EPS formation of both aeration and anoxic sludges are not affect by SRT variation. However, EPS concentration of sludges is higher in aeration tank than in anoxic tank by 6~8 mg EPS/ g VSS. Linear relationship between SMP to DOC indicates that SMP of bulk solution contributes to most of the biological treatment effluent DOC. DOC and turbidity removal efficiency was more improved with URC process than in a conventional coagulation. For pretreatment of UF filtration DOC removal was advanced by URC process than only UF filtration.
Keywords
Extracellular Polymeric Substances (EPS); Soluble Microbial Products (SMP); Sludge Retention Time (SRT); Substrate Utilization Rate;
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