강우유출수 모래 필터의 여과기능 및 폐색 현상에 대한 필터 여재 깊이의 영향 평가 = Evaluation of the Impact of Filter Media Depth on Filtration Performance and Clogging Formation of a Stormwater Sand Filter

다국어 초록 (Multilingual Abstract)

Sand filters are widely used in infiltration systems to manage polluted urban runoff. Clogging, which is mainly caused by the deposition of sediments on the filter media, reduces the filter system’s infiltration capacity, which further limits its lifespan and function. The physical, chemical and biological clogging characteristics of sand filter, therefore, need to be known for effective design and maintenance. Physical clogging behavior and variations in the characteristics of sand filters according to different media depths are examined in this paper. The variations were observed from laboratory column infiltration tests conducted in a vertical flow and fluctuating head condition. It can be seen that an increase in filter media depth results in a high sediment removal performance; however, it leads to a shorter lifespan due to clogging. In the choice of filter media depth to be used in field applications, therefore, the purpose of facilities as well as maintenance costs need to be considered. At all filter media depth configurations, premature clogging occurred because sediments of 100~250 μm clogged the top 15% of filter media depth. Thus, scrapping the top 15% of filter media may be suggested as the first operational maintenance process for the infiltration system.

참고문헌 (Reference)

1 Duncan, H. P., "Urban Stormwater Quality: A Statistical Overview" Cooperative Research Centre of Catchment Hydrology 1999

2 Hatt, B. E., "Treatment Performance of Gravel Filter Media: Implications for Design and Application of Stormwater Infiltration Systems" 41 : 2513-2524, 2007

3 Winter, K. J., "The Impact of Sewage Composition on the Soil Clogging Phenomena of Vertical Flow Constructed Wetlands" 48 (48): 9-14, 2003

4 Wang, Z., "Surface Clogging Process Modeling of Suspended Solids during Urban Stormwater Aquifer Recharge" 24 (24): 1418-1424, 2012

5 Greenberg, A. E., "Standard Methods for the Examination of Water and Wastewater" American Public Health Association 1992

6 Blazejewski, R., "Soil Clogging Phenomena in Constructed Wetlands with Subsurface Flow" 35 (35): 183-188, 1997

7 Morganti, L., "Sodium Hypochlorite Generation for Household Water Disinfection: A Case Study in Nepal" Massachusetts Institute of Technology 1-131, 2002

8 Huisman, L., "Slow Sand Filtration" World Health Organization 1-122, 1974

9 Yong C. F., "Predicting Physical Clogging of Porous Permeable Pavements" 481 : 48-55, 2013

10 Bian, B., "Particle Size Distribution and Pollutants in Road-deposited Sediments in Different Areas in Zhenjiang, China" 31 (31): 511-520, 2009

11 Vaze, J., "Nutrient Loads Associated with Different Sediment Sizes in Urban Stormwater and Surface Pollutants" 130 (130): 391-396, 2004

12 Maniquiz, M. C., "Multiple Linear Regression Models of Urban Runoff Pollutant Load and Event Mean Concentration Considering Rainfall Variables" 22 (22): 946-952, 2010

13 Roger, S., "Mineral, Physical and Chemical Analysis of the Solid Matter Carried by Motorway Runoff Water" 32 (32): 1119-1125, 1998

14 Fassman, E. A., "Media Specification for Stormwater Bioretention Devices" Auckland UniServices for Auckland Council 1-115, 2013

15 Ministry of Environment, "Manual of Nonpoint Source Pollutant Treatment Facility: Establishment, Management, and Operation"

16 Mercado, J. M. R., "Laboratory Study on the Clogging Potential of a Hybrid Best Management Practice" 53 (53): 3126-, 2015

17 Kandra, H. S., "Impact of Filter Design Variables on Clogging in Stormwater Filters" Engineers Australia 38-45, 2012

18 Hatt, B. E., "Hydraulic and Pollutant Removal Performance of Fine Media Stormwater Filtration Systems" 42 (42): 2535-2541, 2008

19 Le Coustumer, S., "Hydraulic Performance of Biofilter Systems for Stormwater Management: Influences of Design and Operation" 376 (376): 16-23, 2009

20 Langergraber, G., "Evaluation of Substrate Clogging Processes in Vertical Flow Constructed Wetlands" 48 (48): 25-34, 2003

21 Siriwardene N., "Clogging of Stormwater Gravel Infiltration Systems and Filters : Insights from a Laboratory Study" 41 (41): 1433-1440, 2007

22 Knowles, O., "Clogging in Subsurface-flow Treatment Wetlands : Occurrence and Contributing Factors" 37 : 99-112, 2011

23 Kandra, H. S., "Bioclogging in Stormwater Filters" 141 (141): 04014057-, 2014

24 Larmet, H., "Bacteria and Heavy Metals Concomitant Transfer in an Infiltration Basin: Columns Study Under Realistic Hydro Dynamical Conditions" 615-622, 2007

25 Kandra, H. S., "Assessment of Impact of Filter Design Variables on Clogging in Stormwater Filters" 28 (28): 1873-1885, 2014

26 Kandra, H. S., "Assessment of Clogging Phenomena in Granular Filter Media used for Stormwater Treatment" 512 : 518-527, 2014