강우유출수 처리를 위한 하이브리드 빗물정원 시스템의 구성요소 배열 연구 Determination on the component arrangement of a hybrid rain garden system for effective stormwater runoff treatment원문보기
최근 비점오염물질 처리를 위하여 저영향개발(low impact development) 기술이 적용되고 있으며, 레인가든 기술은 생물학적 및 물리화학적 처리에 의하여 비점오염물질 저감에 기여하기에 광범위하게 적용되고 있는 LID 기술 중 하나이다. 그러나 유지관리를 지속적으로 수행하지 않아 시설 내 막힘 현상 등의 문제가 발생한다. 따라서 본 연구는 효율적인 물수지 및 오염물질 저감을 위해 레인가든 기술의 구성 요소 배치의 개발 및 평가를 위하여 수행하였으며, 서로 다른 2개의 하이브리드 레인가든 시스템 구축을 통하여 시스템의 최적화된 설계 및 구성요소의 배열을 도출하였다. 분석 결과, 시스템의 구성요소를 직렬로 배열 시 저감량은 유출량의 경우 96%, 오염물질 중 입자상 물질은 99%, 유기물질은 93% 및 중금속은 95%로 나타났다. 반면 시스템이 병렬로 배열 될 시, 유출량은 65% 저감되었으며, 평균 오염물질 저감효율은 TSS는 94%, 영양물질은 80% 및 중금속은 85%으로 평가되었다. 또한, 시스템의 구성요소가 비점오염물질 저감에는 침전, 침투도랑 및 식재부의 순서가 중요한 영향인자로 나타났다. 향후 레인가든 시스템 개발 시 최적화 설계 인자로 활용 가능할 것으로 기대된다.
최근 비점오염물질 처리를 위하여 저영향개발(low impact development) 기술이 적용되고 있으며, 레인가든 기술은 생물학적 및 물리화학적 처리에 의하여 비점오염물질 저감에 기여하기에 광범위하게 적용되고 있는 LID 기술 중 하나이다. 그러나 유지관리를 지속적으로 수행하지 않아 시설 내 막힘 현상 등의 문제가 발생한다. 따라서 본 연구는 효율적인 물수지 및 오염물질 저감을 위해 레인가든 기술의 구성 요소 배치의 개발 및 평가를 위하여 수행하였으며, 서로 다른 2개의 하이브리드 레인가든 시스템 구축을 통하여 시스템의 최적화된 설계 및 구성요소의 배열을 도출하였다. 분석 결과, 시스템의 구성요소를 직렬로 배열 시 저감량은 유출량의 경우 96%, 오염물질 중 입자상 물질은 99%, 유기물질은 93% 및 중금속은 95%로 나타났다. 반면 시스템이 병렬로 배열 될 시, 유출량은 65% 저감되었으며, 평균 오염물질 저감효율은 TSS는 94%, 영양물질은 80% 및 중금속은 85%으로 평가되었다. 또한, 시스템의 구성요소가 비점오염물질 저감에는 침전, 침투도랑 및 식재부의 순서가 중요한 영향인자로 나타났다. 향후 레인가든 시스템 개발 시 최적화 설계 인자로 활용 가능할 것으로 기대된다.
Low impact development (LID) technology has been recently applied for the treatment of nonpoint source pollutants. Rain garden is one of the widely used LIDs since it utilizes various mechanisms such as biological and physico-chemical treatment to reduce pollutants. However, problem such as clogging...
Low impact development (LID) technology has been recently applied for the treatment of nonpoint source pollutants. Rain garden is one of the widely used LIDs since it utilizes various mechanisms such as biological and physico-chemical treatment to reduce pollutants. However, problem such as clogging has been one of the issues encountered by the rain garden that do not undergo constant maintenance. Therefore, this research was conducted to develop and determine the component arrangement of a rain garden system for a more efficient volume and pollutant reduction. Two hybrid rain garden systems having different characteristics were developed and evaluated to determine the optimum design and arrangement of the system. The results showed that the components arranged in a series manner showed a volume reduction of 93% and a pollutant reduction efficiency of approximately 99%, 93% and 95% was observed for particulates, nutrients and heavy metals, respectively. While when the system is connected in a combined series-parallel, the volume and average pollutant reduction efficiency for the TSS, nutrients and heavy metals are 65%, 94%, 80% and 85%, respectively. Moreover, the component arrangement in the order of sedimentation tank, infiltration tank and plant bed exhibited a high pollutant reduction efficiency compared when the infiltration tank and plant bed were interchanged. The findings of this research will help in the further development and optimization of rain garden systems.
Low impact development (LID) technology has been recently applied for the treatment of nonpoint source pollutants. Rain garden is one of the widely used LIDs since it utilizes various mechanisms such as biological and physico-chemical treatment to reduce pollutants. However, problem such as clogging has been one of the issues encountered by the rain garden that do not undergo constant maintenance. Therefore, this research was conducted to develop and determine the component arrangement of a rain garden system for a more efficient volume and pollutant reduction. Two hybrid rain garden systems having different characteristics were developed and evaluated to determine the optimum design and arrangement of the system. The results showed that the components arranged in a series manner showed a volume reduction of 93% and a pollutant reduction efficiency of approximately 99%, 93% and 95% was observed for particulates, nutrients and heavy metals, respectively. While when the system is connected in a combined series-parallel, the volume and average pollutant reduction efficiency for the TSS, nutrients and heavy metals are 65%, 94%, 80% and 85%, respectively. Moreover, the component arrangement in the order of sedimentation tank, infiltration tank and plant bed exhibited a high pollutant reduction efficiency compared when the infiltration tank and plant bed were interchanged. The findings of this research will help in the further development and optimization of rain garden systems.
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문제 정의
Furthermore, the optimum component arrangement for a hybrid rain garden system is in the order of sedimentation tank (ST), infiltration tank (IT) and plant bed (RG) wherein this arrangement exhibited high pollutant reduction efficiency in stormwater runoff compared to when IT and RG were interchanged. With these findings, further investigation, assessment and evaluation of hybrid rain garden systems are needed for further improvement and development of the system. The findings in this research may be used for the further development and optimization of rain garden systems in the future.
제안 방법
Experimental runs and actual storm events were monitored in HRGS1 and HRGS2, respectively. The flow rate in the nflow (IN), outflow (OUT) and infiltration (I-RG and I-IT) was checked and measured manually every five minutes for HRGS1, while in HRGS2, the flow rate was manually measured in the inflow (IN), infiltration tank (OUT1) and infiltration tank (OUT2).
The flow rate in the nflow (IN), outflow (OUT) and infiltration (I-RG and I-IT) was checked and measured manually every five minutes for HRGS1, while in HRGS2, the flow rate was manually measured in the inflow (IN), infiltration tank (OUT1) and infiltration tank (OUT2).
Therefore, this research was conducted to develop and determine the component arrangement of a rain garden system that can treat varying amount of pollutants from various impervious surfaces for a more efficient volume and pollutant reduction.
In order to reduce these effects, LID technologies were developed to preserve the natural hydrologic cycle and the pre-developed water quality. This study was conducted by developing two hybrid rain garden systems in order to determine the component arrangement from an optimized rain garden system that can treat varying amounts of pollutants from various impervious surfaces to obtain a more efficient volume and pollutant reduction. Based on the results gathered, HRGS1 which was designed in a series manner was able to reduce approximately 93%, while HRGS2, designed in a series-parallel manner, was able to reduce 65% of the stormwater runoff.
성능/효과
Moreover if the rainfall ranged between 10-20 mm and more than 20 mm, the retained runoff is 1% and 7%, respectively, while the combined outflow at IT and RG is 11% and 4%, respectively. Based on the data obtained, it can be said that using the actual storm events which has varying rainfall, the higher the rainfall depth, the higher the amount of runoff discharged to the drainage system.
This study was conducted by developing two hybrid rain garden systems in order to determine the component arrangement from an optimized rain garden system that can treat varying amounts of pollutants from various impervious surfaces to obtain a more efficient volume and pollutant reduction. Based on the results gathered, HRGS1 which was designed in a series manner was able to reduce approximately 93%, while HRGS2, designed in a series-parallel manner, was able to reduce 65% of the stormwater runoff. In terms of pollutant reduction efficiency, HRGS1 was able to reduce the particulate concentration by 99%, while the nutrients and heavy metals were reduced by an average of 93% and 95%, respectively.
Based on the results gathered, HRGS1 which was designed in a series manner was able to reduce approximately 93%, while HRGS2, designed in a series-parallel manner, was able to reduce 65% of the stormwater runoff. In terms of pollutant reduction efficiency, HRGS1 was able to reduce the particulate concentration by 99%, while the nutrients and heavy metals were reduced by an average of 93% and 95%, respectively. On the other hand, HRGS2 reduced the particulates by 94% while the nutrients were reduced by 80% and 85% for the heavy metal concentration.
26 m3/min, respectively. It was observed that the inflow was reduced by approximately 95% in the whole system while the average flow rate was decreased by approximately 93% in the outflow. On the other hand, the time before infiltration is the time when the inflow starts and the runoff infiltrated in RG and IT.
후속연구
With these findings, further investigation, assessment and evaluation of hybrid rain garden systems are needed for further improvement and development of the system. The findings in this research may be used for the further development and optimization of rain garden systems in the future.
참고문헌 (26)
Bratieres, K, Fletcher, TD, Deletic, A, Alcazar, L, Le Coustumer, S and McCarthy, DT (2008). "Removal of nutrients, heavy metals and pathogens by stormwater biofilters", 11th International Confernce on Urban Drainage, Edinburgh, Scotland, UK.
Choi, JY, Hong, JS, Kang, HM and Kim, LH (2016). "Characteristics of stormwater runoff from highways with unit traffic volume, J. of Wetlands Research, 18(3), pp. 275-281. [Korean Literature]
Davis, AP, Shokouhian, M, Sharma, H and Minami, C (2006). "Water quality improvement through bioretention media: Nitrogen and Phosphorus removal", Water Environment Research, 78, pp. 284-293.
Delpla, I, Jung, AV, Baures, E, Clement, BM, and Thomas, O (2009). "Impacts of climate change on surface water quality in relation to drinking water production", Environmental International, 35, pp. 1225-1233.
Flores, PED, Maniquiz-Redillas, MC, Tobio, JAS and Kim, LH (2015). "Evaluation on the hydrologic effects after applying an infiltration trench and a tree box filter as low impact development (LID) techniques", J. of Korean Society of Water Environment, 31(1), pp. 12-18. [Korean Literature]
Flores, PED, Maniquiz-Redillas, MC, Geronimo, FKF, Alihan, JCP and Kim, LH (2016). "Transport of nonpoint source pollutants and stormwater runoff in a hybrid rain garden system", J. of Wetlands Research, 18(4), pp. 481-487. [Korean Literature]
Geronimo, FKF, Maniquiz, MC and Kim, LH (2013). "Treatment of parking lot runoff by a tree box filter", Desalination and Water Treatment, 51(19-21), pp. 4044-4049.
Hamel, P, Daly, E and Fletcher, TD (2013). "Source-control stormwater management for mitigating the impacts of urbanization on baseflow: A review", Journal on Hydrology, 485, pp. 201-211.
Hong JS, Maniquiz-Redillas, MC, Ham, JW and Kim, LH (2016). "Analysis of water quality improvement efficiency using constructed wetland in a coastal reservoir", J. of Wetlands Research, 18(3), pp. 292-300. [Korean Literature]
Jung, YJ, Stenstrom, MK, Jung, DI, Kim, LH and Min, KS (2008). "National pilot projects for management of diffuse pollution in Korea", Desalination, 226, pp. 97-105.
Justic, D, Rabalais, NN and Turner, RE (1996). "Effects of Climate Change on Hypoxia in Coastal Waters: A Doubled C02 Scenario for the Northern Gulf of Mexico", Limnology and Oceanography 41(5), pp. 992-1003.
Kim, LH, Ko, SO, Jeong, SM and Yoon, JY (2007). "Characteristics of washed-off pollutants and dynamic EMCs in parking lots and bridges during a storm", Science of Total Environment, 376, pp. 178-184.
Maniquiz-Redillas, MC and Kim, LH (2014). "Fractionation of heavy metals in runoff and dischage of a stromwater management system and its implications for treatment", J. of Environmental Sciences, 26, pp. 1214-1222.
Ministry of Environment (MOE), Korea Environment Institute (2004a). Korea Environmental Policy Bulletin: Environmental Impact Assessment in Korea, 2(2).
Mulholland, PJ, Best, GR, Coutant, CC, Hornsberger, GM, Meyer, JL, Robinson, PJ, Stenberg, JR, Turner, RE, Vera-Herrera, F and Wetzel, R (1997). "Effects of Climate Change on Freshwater Ecosystems of the South Eastern United States and the Gulf Coast of Mexico", Hydrological Processes 11, pp. 949-970.
Murdoch, PS, Baron, JS and Miller, TL (2000). "Potential effects of climate change on surface-water quality in North America", J. of the American Water Resources Association, 36(2), pp. 347-366.
Park, JH, Yoo, YG, Park, YK, Yoon, HT, Kim, JK, Park, YS, Jean JH and Lim, KC (2008). "Analysis of Runoff Reduction with LID Adoption using the SWMM", J. of Korean Society on Water Quality, 24(6), pp. 805-815. [Korean Literature]
Poiani, KA, Johnson, WC and Kittel, TGF (1995). "Sensitivity of a Prairie Wetland to Increased Temperature and Seasonal Precipitation Changes" Water Resources Bulletin 31, pp. 283-294.
Shuster, WD, Bonta, J, Thurston, H, Warnemuende, E and Smith DR (2005). "Impacts of impervious surface on watershed hydrology: A review", Urban Water Journal, 2(4), pp. 263-275.
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