조강우 이병하 송경근 안규홍 김태균 이슬비 2024-01-20T20:32:45Z 2024-01-20T20:32:45Z 2021-09-06 2009-10 1225-7672 https://pubs.kist.re.kr/handle/201004/132063 This manuscript covers the results of field investigation and lab-scale experiments to design a double-layered biofilter system to control urban storm runoff. The biofilter system consisted of a coarse soil layer (CSL) for filtration and fine soil layer (FSL) for adsorption and biological degradation. The variations of flow rate and water quality of runoff from a local expressway were monitored for seven storm events. Laboratory coatmn experiments were p evented using seven kinds of soil and mulch to maximize poalutants remoora. The site mean concentration (SMC) of storm runoff from the drainage area (runoff coefficient: 0.92) was measured to be 203 mg/L for SS, 307 mg/L for TCODCr, 12.3 mg/L for TN, 7.3 mg/L for NH4+-N, and 0.79 mg/L for TP, respectively. This study employed a new design concept, to cover the maximum rainfral intensity with one month recurrence interora. Effective storms for last ten years (1998-2007) i raeoul suggested the design rainfral intensity to be 8.8 mm/hr.raingle layer soil coatmn showed the maximum remoora rate of poalutants lsoilwhen the univentity coefficient of CSL was 1.58 and the silt/clay contents of FSL was virtually 7%. The remoora efficiency during op eory coatmdxperimlayer soil coatmn was 98% for SS and turbidity, 75% for TCODCr, 56% for NH4+-N, 87% for TP, and 73-91% for heavy metals. The hydraulic conductivity of the soil coatmn, 0.023 cm/sec, suggested that the suevatalsrea of the biofilter system should be about 1% of the drainage area to treat the rainfall intensity of one month recurrence interval. Korean 대한상하수도학회 이중층 토양 여과시설을 이용한 도로 강우 유출수 처리성능 평가 (Ⅰ) - 시설 설계인자 결정을 중심으로 - Performance Evaluation of a Double Layer Biofilter System to Control Urban Road Runoff (Ⅰ) - System Design - Article 2 상하수도학회지, v.23, no.5, pp.599 - 608 상하수도학회지 23 5 599 608 kci ART001385402 강우 유출수 설계 강우강도 이중층 토양여과 토양 여과 파일럿 Design rainfall intensity Double layer soil filtration Pilot Storm runoff