| Title |
Investigation on the Factors Affecting Urban Stormwater Management Performance of Bioretention Systems |
| Authors |
( Franz Kevin F. Geronimo ) ; ( Marla C. Maniquiz-redillas ) ; 홍정선 ( Jungsun Hong ) ; 김이형 ( Lee-hyung Kim ) |
| DOI |
https://doi.org/10.15681/KSWE.2017.33.1.1 |
| Keywords |
Bioretention; Event mean concentration; Flow attenuation; Green infrastructures; Low Impact Development |
| Abstract |
Bioretention systems, an advance low impact development and green infrastructure approach were currently utilized in different parts of the world because it promotes biodiversity thereby mimicking and preserving the pre-developed state of an area. This study investigated and compared the capability of four bioretention systems to identify factors affecting the hydraulic capabilities and pollutant removal efficiencies of each system. The two bioretention type A referred as Type A-C and Type A-FC were planted with perennials such as Chrysanthemum and Fan columbine, respectively. On the other hand, the two type B bioretention systems referred as Type B-A and Type B-JM were planted with shrub plant species such as Azalea and Japanese Meadowsweet, respectively. Based on the results, TV, infiltration mechanism, filter media depth and plant species were identified as the factors affecting the difference in flow attenuation, retained volume and pollutant removal efficiency of Type A-C, Type A-FC, Type B-A and Type B-JM bioretention systems. The design of bioretention Type B-A and Type B-JM were advantageous considering greater volume retention, groundwater recharge, longer HRT and peak flow attenuation and greater pollutant removal efficiency. On the other hand, the design of bioretention Type A-C and Type A-FC was more appropriate for design considering reduced groundwater contamination. |