대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제28권12호
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  • Pages.1323-1330
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  • 2006
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지

오존과 과산화수소를 이용한 이취미 물질 산화 제거

Removal of Odorous Compounds Using Ozone and Hydrogen Peroxide

  • 이화자 (부산광역시 상수도사업본부 수질연구소) ;
  • 손희종 (부산광역시 상수도사업본부 수질연구소) ;
  • 노재순 (부산광역시 상수도사업본부 수질연구소) ;
  • 이상원 (부산광역시 상수도사업본부 수질연구소) ;
  • 지기원 (부산광역시 상수도사업본부 수질연구소) ;
  • 유평종 (부산광역시 상수도사업본부 수질연구소) ;
  • 강임석 (부경대학교 환경공학과)
  • Lee, Hwa-Ja (Water Quality Research Institute, Waterworks Headquarter, Busan) ;
  • Son, Hee-Jong (Water Quality Research Institute, Waterworks Headquarter, Busan) ;
  • Roh, Jae-Soon (Water Quality Research Institute, Waterworks Headquarter, Busan) ;
  • Lee, Sang-Won (Water Quality Research Institute, Waterworks Headquarter, Busan) ;
  • Ji, Ki-Won (Water Quality Research Institute, Waterworks Headquarter, Busan) ;
  • Yu, Pyung-Jong (Water Quality Research Institute, Waterworks Headquarter, Busan) ;
  • Kang, Lim-Seog (Department of Environmental Engineering, Pukyong National University)
  • 발행 : 2006.12.31
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초록

오존/과산화수소 공정을 이용한 급속 모래여과 처리수 중의 geosmin 제거에서 오존만 20 mg/L 투입한 경우보다 오존 5 mg/L와 과산화수소 0.2 mg/L를 투입하여 처리한 경우가 더 높은 제거율을 보였으며, 오존/과산화수소 공정에 의해 원수 중에 함유된 geosmin의 경우는 급속 모래여과 처리수보다 $12{\sim}27%$ 정도 낮은 제거율을 나타내었다. 급속 모래여과 처리수 중에 함유된 geosmin과 IPMP에 대해 오존 투입농도별로 투입된 과산화수소와 오존의 비($H_2O_2/O_3$)에 따른 제거율을 살펴본 결과, 오존농도가 1 mg/L 이하의 경우에서는 $H_2O_2/O_3$ 비가 적정 비율 이상으로 높아지면 geosmin과 IPMP 제거율이 감소하였으며, 적정 $H_2O_2/O_3$ 비는 실제 정수장에서 사용하고 있는 후오존 투입농도인 $1{\sim}2$ mg/L에서 geosmin의 경우 $0.5{\sim}1$, IPMP의 경우 $0.2{\sim}1$로 나타났으며, 원수 중에 함유된 geosmin 제거를 위한 적정 $H_2O_2/O_3$ 비는 오존 투입농도 $1{\sim}2$ mg/L 범위에서 $1{\sim}3$ 정도로 광범위하게 나타났다. 급속 모래여과 처리수에 함유된 이취미 물질 5종에 대한 오존(0.5, 1.0, 2.0 mg/L) 투입농도별 잔존율을 살펴본 결과, IPMP의 제거율이 60% 이상으로 가장 높게 나타났으며, 오존/과산화수소 공정이 오존 단독공정 보다 제거율이 전반적으로 높게 나타났다. 오존/과산화수소 공정을 이용한 BDOC 생성능을 오존 투입농도 $0.5{\sim}2$ mg/L에서 과산화수소 투입농도별로 조사한 실험에서 오존/과산화수소 공정이 오존 단독공정보다 추가적으로 0.9 정도의 BDOC/DOC 비가 상승하여 0.34까지 증가하였다.

In this study, five different odor causing compounds in the Nakdong river and rapid sand filtered waters were treated by oxidation from $O_3/H_2O_2$ process. In addition, the change in BDOC formation by the $O_3/H_2O_2$ process was also investigated for considering this advanced oxidation Process as a pre-treatment to the BAC treatment process. The experimental result showed that the removal efficiency of geosmin was higher with the use of 5 mg/L of $O_3$ and 0.2 mg/L of $H_2O_2$ than with the use of 20 mg/L of $O_3$ alone for the sand filtered water. And in general, the removal efficiency of geosmin in raw water was $12{\sim}27%$ lower than the one in sand filtered water. In sand filtered water. the removal efficiencies of geosmin and IPMP decreased when $H_2O_2/O_3$ ratio increases above the optimum ratio. The optimum ratio of $H_2O_2/O_3$ dose was $0.5{\sim}1.0$ for geosmin and $0.2{\sim}1.0$ for IPMP. However, the optimum ratio of $H_2O_2/O_3$ in raw water remove geosmin appealed to $1.0{\sim}3.0$. According to the experimental results for the removal of 5 different odor causing compounds under varied $O_3$ doses, the removal efficiency of IPMP was the highest with 60% and, in overall, $O_3/H_2O_2$ process showed higher removal efficiency than $O_3$ alone process. The BDOC formation by the $O_3/H_2O_2$ process increased from $0.1{\sim}0.25$ to $0.19{\sim}0.34$ comparing to $O_3$ process alone. Therefore, it is concluded that the advanced oxidation process with $O_3/H_2O_2$ can be used as a pretreatment to the BAC treatment process.

키워드

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