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논문 기본 정보

자료유형
학술저널
저자정보
Guijiao Zhang (Zhejiang University) Tianfeng Gu (Zhejiang University) Yongchao Zhou (Zhejiang University) David Z. Zhu (University of Alberta) Yiping Zhang (Zhejiang University)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제27권 제3호
발행연도
2022.6
수록면
80 - 87 (8page)

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초록· 키워드

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Volatile sulfur compounds (VSCs), including hydrogen sulfide (H₂S) and volatile organic sulfide compounds (VOSCs), can be produced in sewer systems causing sewer odor problems. In this study, the effects of intermittently dosing ferric iron, hydrogen peroxide, and nitrate on H₂S and VOSCs in sewer headspace were investigated. In order to characterize the composition of VSCs, an HC-3 trace sulfur analyzer and gas chromatograph (GC) equipped with a triple quadrupole-type mass spectrometry (MS) apparatus were used to determine the VSCs. The results indicated that the effect of intermittent addition of 40 mg/L ferric iron or 40 mg/L hydrogen peroxide is limited for VSCs inhibition. The H₂S and VOSCs concentrations increased significantly in the late-stage experiments, even around 20% and 30% respectively higher than the initial average concentrations. However, the intermittent addition of 40 mg N/L nitrate has a relatively stable control effect of H₂S and VOSCs which maintaining 60% removal rate. Moreover, methyl mercaptan (MeSH) was the most abundant compound of the total VOSCs released and the results of the theoretical odor concentration study also indicate MeSH is the main VOSC causing the significant odor problem. Therefore, more attention should be focused on the VOSCs which have extremely low odor threshold.

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

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