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Study

Citation

Lee, H., Lim, B., Hur, J., Kim, H., & Shin, H. (2021). Combined dual-size foam glass media filtration process with micro-flocculation for simultaneous removal of particulate and dissolved contaminants in urban road runoff. Journal of Environmental Management.

Study description

This study investigated the use of a combined media filtration process to treat both dissolved and particulate pollutants in urban road runoff. The purpose was to identify the effectiveness if a combined system with micro flocculation compared with a media filtration only process.

Response

Cause term/trajectory

Habitat (physical alteration)

Cause description

Combined media filtration process with micro-flocculation

Effect term/trajectory

Water quality - nutrients (phosphorus) (Decrease)

Effect description

The combined process achieved a 97.3% removal efficiency for particulate phosphorus and 97.4% removal efficiency for dissolved phosphorus. This was compared with a media filtration only removal which achieved 71.8% particulate removal efficiency for particulate phosphorus and 25.6% removal efficiency of dissolved phosphorus. By the addition of micro-flocculation, the removal efficiency improved by 25.5% for particulate phosphorus and 71.8% for dissolved phosphorus.

Response measure type

Mean difference

Design

Source data

Laboratory

Study type

Manipulation

Study design

Temporal gradient

Number of independent control or reference sampling units

1

Sample size used in analysis

See below

Design description

7 samples taken from 0 to 60mins at 10min intervals for each process (CMF and MF only)

Context

Climate

Cold (continental)

Country

South Korea

Habitat

Artificial

Spatial extent

Other

Temporal extent

Other

Context description

Temporal extent: 1hour. Spatial: laboratory column test