Removal of E. coli from stormwater by bioretention system: parameter optimization and mechanism | Zendy

Jianwei Liu | Zendy; Yue Peng | Zendy; Yan He | Zendy; Mengfei Zhao | Zendy

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Removal of E. coli from stormwater by bioretention system: parameter optimization and mechanism

Author(s) -

Jianwei Liu,

Yue Peng,

Yan He,

Mengfei Zhao

Publication year - 2020

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2020.207

Subject(s) - bioretention , stormwater , biofilter , environmental engineering , filter (signal processing) , environmental science , chemistry , escherichia coli , engineering , surface runoff , biology , ecology , biochemistry , gene , electrical engineering

Four bioretention simulation columns were used to study the removal effects and influencing factors of Escherichia coli (E. coli) in stormwater. The mechanism of E. coli removal in the bioretention system was also analyzed. The results show that the removal effects of the four new composite filters are better than that of the conventional filter. The specific surface area and porosity of the filter may be the key factors affecting the removal effect; the increase of the filter depth is beneficial to the removal of E. coli; the area is conducive to the removal of E. coli. Excessive depth of the submerged zone will reduce the E. coli removal effect; drying will reduce the E. coli removal effect, but it can be restored by rewetting.

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