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논문 기본 정보

자료유형
학술저널
저자정보
Yonkyu Choi (Seoul Water Institute) Hyeon Park (Seoul Water Institute) Manho Lee (Seoul Research Institute of Public Health and Environment) Gun-Soo Lee (Seoul Water Institute) Young-june Choi (Seoul Water Institute)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제24권 제3호
발행연도
2019.9
수록면
501 - 512 (12page)

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초록· 키워드

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The seasonal effects on the biostability of drinking water were investigated by comparing the seasonal variation of assimilable organic carbon (AOC) in full-scale water treatment process and adsorption of AOC by three filling materials in lab-scale column test. In full-scale, pre-chlorination and ozonation significantly increase AOC<SUB>P17 (Pseudomonas fluorescens P17)</SUB> and AOC<SUB>NOX (Aquaspirillum sp. NOX)</SUB>, respectively. AOC formation by oxidation could increase with temperature, but the increased AOC could affect the biostability of the following processes more significantly in winter than in warm seasons due to the low biodegradation in the pipes and the processes at low temperature. AOC<SUB>P17</SUB> was mainly removed by coagulation-sedimentation process, especially in cold season. Rapid filtration could effectively remove AOC only during warm seasons by primarily biodegradation, but biological activated carbon filtration could remove AOC in all seasons by biodegradation during warm season and by adsorption and bio-regeneration during cold season. The adsorption by granular activated carbon and anthracite showed inverse relationship with water temperature. The advanced treatment can contribute to enhance the biostability in the distribution system by reducing AOC formation potential and helping to maintain stable residual chlorine after post-chlorination.

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ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2019-539-000448485