title: Developing technologies for rainwater utilization in urbanized area.
abstract: Rainwater utilization has potential to recover the hydrological cycle, to buffer extreme run-off situations in the watercourses, and to reduce the costs for water supply in urban areas. However, relatively few works have been done for developing technologies to improve the water quality during rainwater utilization in large cities where the contamination of rainwater is anticipated. Therefore, this study focused on developing technologies for rainwater utilization subsystems including catchment, storage, treatment, infiltration, and use for buildings in urban areas. The rainwater samples collected from roof and roof garden were compared with wet deposition to analyze and identify the major components that may cause problems in rainwater utilization. Based on these results, novel techniques utilizing TiO2, sunlight, and bauxsol to minimize the contamination level by particles, microorganisms, and nutrients were developed for rainwater subsystems and applied to explore their suitability.
authors.affiliation: Korea Institute of Construction Technology, 2311 Daehwa-Dong, Ilsan-Gu, Goyang-Si, Gyeonggi-Do, 411-712, Republic of Korea.
authors.forename: R H
authors.initials: RH
authors.lastname: Kim
authors.forename: S
authors.initials: S
authors.lastname: Lee
authors.forename: J H
authors.initials: JH
authors.lastname: Lee
authors.forename: Y M
authors.initials: YM
authors.lastname: Kim
authors.forename: J Y
authors.initials: JY
authors.lastname: Suh
mesh_terms: D002947:Cities; D003247:Conservation of Natural Resources; D005374:Filtration; D009391:Nephelometry and Turbidimetry; D011891:Rain; D014873:Water Pollutants / Q000302:isolation & purification; D014876:Water Pollution / Q000517:prevention & control; D018508:Water Purification / Q000379:methods; D014881:Water Supply
chemical_list: D014873:Water Pollutants