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Catch basin inserts to reduce pollution from stormwater.

S L Lau1, E Khan, M K Stenstrom

  • 1Civil and Environmental Engineering Department, University of California, Los Angeles, 90095-1593, USA.

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|November 29, 2001
PubMed
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Stormwater runoff is a major source of pollution in US waters. This study evaluated catch basin inserts for their effectiveness in removing trash, debris, and pollutants from stormwater before it reaches coastal areas.

Area of Science:

  • Environmental Science
  • Water Quality Management
  • Urban Hydrology

Background:

  • Stormwater contamination is a significant pollutant source for US water bodies, often exceeding the impact of treated wastewater.
  • Unlike treated point sources, stormwater receives no treatment and enters waterways via catch basins, impacting coastal water quality.
  • Existing stormwater catch basin inserts lack independent, full-scale performance evaluations.

Purpose of the Study:

  • To evaluate the efficacy of commercially available catch basin inserts in removing key stormwater pollutants.
  • To assess the performance of these devices under both laboratory and real-world field conditions.
  • To provide data for the future development and application of stormwater treatment technologies.

Main Methods:

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  • Conducted bench-scale and full-scale tests on stormwater catch basin inserts.
  • Evaluated pollutant removal capabilities under controlled laboratory settings.
  • Assessed device performance in actual field conditions for trash, suspended solids, and oil/grease removal.

    • Main Results:

    • Stormwater runoff poses a greater environmental threat to receiving waters than treated wastewater discharges.
    • Catch basin inserts show potential for reducing pollutants like trash, suspended solids, and oil and grease in stormwater.
    • Performance data from full-scale and lab tests provide a basis for insert improvement.

    Conclusions:

    • Catch basin inserts are a viable method for mitigating stormwater pollution in urban environments.
    • Independent evaluation of stormwater treatment devices is crucial for effective pollution control.
    • The study's findings support the continued development and implementation of catch basin inserts for improved water quality.