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Developing technologies for rainwater utilization in urbanized area.

R H Kim1, S Lee, J H Lee

  • 1Korea Institute of Construction Technology, 2311 Daehwa-Dong, Ilsan-Gu, Goyang-Si, Gyeonggi-Do, 411-712, Republic of Korea.

Environmental Technology
|May 24, 2005
PubMed
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This study developed novel technologies for urban rainwater utilization, improving water quality for buildings. Techniques using TiO2, sunlight, and bauxsol effectively reduced contaminants in collected rainwater.

Area of Science:

  • Environmental Science
  • Urban Hydrology
  • Water Treatment Technologies

Background:

  • Rainwater utilization offers benefits for urban water supply and hydrology but faces challenges with water quality.
  • Limited research exists on effective technologies for treating contaminated urban rainwater.
  • Contamination in urban rainwater can hinder its widespread adoption in buildings.

Purpose of the Study:

  • To develop and evaluate technologies for improving rainwater quality across urban utilization subsystems.
  • To identify key contaminants in urban rainwater affecting its usability.
  • To explore novel treatment methods for particles, microorganisms, and nutrients in rainwater.

Main Methods:

  • Collected rainwater samples from urban roofs and roof gardens for analysis.

Related Experiment Videos

  • Compared rainwater composition with wet deposition to identify contaminants.
  • Developed and tested new treatment techniques using titanium dioxide (TiO2), sunlight, and bauxsol.
  • Assessed the suitability of these techniques for various rainwater utilization subsystems.

    • Main Results:

    • Identified major components causing contamination issues in urban rainwater.
    • Demonstrated the effectiveness of TiO2, sunlight, and bauxsol in reducing particles, microorganisms, and nutrients.
    • Showcased the applicability of developed technologies for urban rainwater subsystems.

    Conclusions:

    • Novel technologies show promise for enhancing urban rainwater quality.
    • Effective treatment is crucial for successful rainwater utilization in buildings.
    • Further research can optimize these methods for broader application.