• Journal of Korean Society of Environmental Engineers
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• v.35 no.6
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• pp.436-441
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• 2013

An experiment using a 5 m-long sand column was performed to evaluate the resisting capability against micro-pollutants of the infiltration gallery, multi-purpose filtration pond and riverbank/bed filtration, of which the filtration distance is becoming increasingly shorter in Korea. Results suggested that the Korean riverbed sand contained significant amount of organics, resulting in a relatively vigorous adsorption of chloride ion on the sand surface. Results also indicated that while phenol was not detected in the column filtrate, both 1,4-dioxane and diazinon were exposed to adsorption by the sand as they moved through the column, decreasing their peak concentrations during the movement. It can be expected that the peak concentrations will diminish significantly in the practical scale due to its longer travel distance.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.324-324
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• 2016

최근 하천에서 취수원을 개발하는 방법 중 수질 측면에서 2차 비용을 저감할 수 있는 간접 취수원에 대한 연구가 활발히 진행되고 있다. 상수원수 및 하천유지용수 등의 취수원을 개발하는데 있어서 강변여과수 개발, 하상여과수 개발, 복류수 개발 등을 적용하여 도입하고 있으나 수량 확보의 불확실성, 유지관리상의 어려움으로 인해 많은 시행착오를 겪고 있다. 이에 본 연구에서는 저심도 간접취수의 안정적인 수량 및 수질 확보를 위해 심도 10m 이내의 제외지 또는 하상을 개착하여 새롭게 고안된 기능성 스크린을 설치하려고 한다. 기존의 간접취수에 비해 안정적이고 지속가능한 수량 확보 및 유지관리에서 유리한 공법을 적용하기 위해 정량적 분석이 가능한 모형실험을 통해 효과 분석을 진행한다.

• Journal of Korean Society of Water and Wastewater
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• v.37 no.5
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• pp.281-288
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• 2023

This study was performed to evaluate the pollutants removal characteristics of two types of RBFs(Riverbank filtration, Riverbed filtration) intake facilities installed in Nakdong River and in Hwang River respectively. The capacity of each RBF is 45,000 m³/d for riverbank filtration intake facility and 3,500 m³/d for riverbed filtration intake facility. According to data collected in the riverbank filtration site, removal rate of each pollutant was about BOD(Biochemical Oxygen Demand) 52%, TOC(Total Organic Carbon) 57%, SS(Suspended Solids) 44%, Total coliforms 99% correspondingly. Furthermore, Microcystins(-LR,-YR,-RR) were not found in riverbank filtered water compared to surface water in Nakdong River. DOC(Dissolved Organic Carbon) and Humics which are precursors of disinfection byproduct were also reported to be removed about 59% for DOC, 65% for Humics. Based on data analysis in riverbed filtration site in Hwang River, removal rate of each contaminant reaches to BOD 33.3%, TOC 38.5%, SS 38.9%, DOC 22.2%, UV254 21.2%, Total coliforms 73.8% respectively. Additionally, microplastics were also inspected that there was no obvious removal rate in riverbed filtered water compared to surface water in Hwang River.