Performance Evaluation of Water Circulation Facilities with Infiltration and Retention Functions

침투 및 저류 기능을 가진 물 순환 시설의 효과 평가

Hong, Jung Sun;Maniquiz-Redillas, Marla C.;Kim, Ree Ho;Lee, Seon Ha;Kim, Lee-Hyung

  • Received : 2015.12.01
  • Accepted : 2015.12.20
  • Published : 2015.12.30


In 2014, the city of Seoul revised the ordinance regarding water-cycle restoration in the Seoul Metropolitan areas by incorporating the 'Low Impact Development (LID)' policy. The new ordinance plan will utilize 630 mm or almost 45 to 50% of annual rainfall until 2050 by means of providing a rainwater management system consisting of infiltration, retention and vegetation. The LID is believed to be the key to achieving the target requirements, specifically in development projects. This research was performed to evaluate the stormwater runoff and pollutant reduction performance of three different LID facilities (water circulation facilities) including an infiltration inlet, bioretention swale, and permeable pavement constructed in Seoul City. Results show that among the water circulation facilities, the permeable pavement achieved the highest runoff reduction as it was able to entirely capture and infiltrate the runoff to the ground. However, in order to attain a long-term performance it is necessary to manage the accumulated sediment and trapped pollutants in the landscape areas through other water circulation techniques such as through soil erosion control. In terms of pollutant reduction capability, the infiltration inlet performed well since it was applied in highly polluted areas. The bioretention facility integrating the physico-chemical and biological mechanisms of soil, microorganisms and plants were able to also achieve a high runoff and pollutant reduction. The water circulation facilities provided not only benefits for water circulation but also various other benefits such as pollutant reduction, ecological restoration, and aesthetic functions.


Low Impact Development (LID);Nonpoint source pollution;Rainfall;Runoff reduction;Water circulation


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  1. Assessment of Performances of Low Impact Development (LID) Facilities with Vegetation vol.3, pp.2, 2016,