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논문 기본 정보

자료유형
학술저널
저자정보
Ilho Kim (Korea Institute of Civil Engineering and Building Technology) Jaiyeop Lee (Korea Institute of Civil Engineering and Building Technology)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제27권 제2호
발행연도
2022.4
수록면
74 - 82 (9page)

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초록· 키워드

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This study analyzed residues of PPCPs in secondary treated sewage water, and their amount eliminated by ozonation processes. A microbubble nozzle and ejector were used to dissolve ozone. To consider a low concentration of PPCPs, a SPE method was performed on samples prior to the analysis. The concentration of dissolved ozone was 4.00 mg/L in the microbubble and 2.49 mg/L in the ejector. To examine elimination trends, the experiment was also performed at a low concentration of ozone, 1/10 of its original concentration. The maximum elimination rate on average was 93.0% in the ejector, higher than that in the microbubble (90.1%), but 16 PPCPs were found to show a relatively high elimination rate in the microbubble, higher than the ejector. Elimination trends with respect to time were distinguished based on inflection point, and 11 PPCPs were concentrated on the latter half of the microbubble after the inflection point at the low concentration of ozone, which was compared to other cases. In the source water, concentrations of 2 PPCPs were higher than the reference toxic concentration based on the QSAR model, but after treatment, only bezafibrate was over the value when the ejector with low ozone injection concentration was applied.

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ABSTRACT
1. Introduction
2. Experimental Section
3. Results and Discussion
4. Conclusions
References

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