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논문 기본 정보

자료유형
학술저널
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이준호 (한국교통대학교) 김명호 (한국교통대학교 토목·환경·도시교통공학부) 이택경 (송원건설) 양승호 ((주) 경우크린텍)
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한국환경기술학회 한국환경기술학회지 한국환경기술학회지 제22권 제1호
발행연도
2021.1
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23 - 33 (11page)

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About 80 % of pollutants in stormwater are present in particulate phase and attached to particles transported in suspension, with under 100 μm particle size. Therefore, as many pollutants are associated with micro particles, it has been suggested that the removal of SS is critical for treatment of a wide range of stormwater pollutants. This study has been carried out to evaluate the applicability of fiber media and backwashing effect for treatment of stormwater micro-particle pollutants. Upflow type column filter was used for to treat micro particles. Two type of fiber filter media(HS-P 35 mm, HS-P 40 mm) were selected for this study. The increment of head loss in filter media and cumulative solid load had dependent relation and correlation coefficient of 0.57 ~ 0.67. As the results of HS-P 35 mm media filtration, the range of removal efficiency of turbidity was 50.9 ~ 73.0 %(mean 63.3 %), SS 75.0 ~ 91.3 %(mean 85.5 %), respectively. In case of HS-P 40 mm filter media, the range of removal efficiency of turbidity was 55.9 ~ 76.4 %(mean 66.7 %), SS 75.0 ~ 91.3 %(mean 85.5 %), respectively. The SS removal efficiency was dropped with high surface loading. Conversely removal efficiency was increased with detention time. When the detention time was 3 ~ 4 min, SS removal efficiency was about more 90 % for HS-P 35 mm and 40 mm media. In case of HS-P 35 mm media, the ranges of mean particles size, DMean for influent and effluent were 14.72 ~ 38.94 ㎛(mean 23.84 ㎛) and 7.68 ~ 14.74 ㎛(mean 10.35 ㎛), respectively. And for HS-P 40 mm media case, the ranges of mean particles size for influent and effluent were 16.69 ~ 28.69 ㎛(mean 22.00 ㎛) and 5.41 ~ 15.86 ㎛(mean 9.75 ㎛), respectively. Based on SS load mass balance, the results of HS-P 35 mm, 40 mm media filter recovery rate ranges were 80.6 ~ 88.0 %, 80.5 ~ 88.8 % respectively. The media filter recovery rate was decreased with surface loading.

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