Multiple evaluations of the removal of pollutants in road runoff by soil infiltration.
Water Res
; 42(10-11): 2745-55, 2008 May.
Article
in En
| MEDLINE
| ID: mdl-18328527
ABSTRACT
Groundwater replenishment by infiltration of road runoff is expected to be a promising option for ensuring a sustainable urban water cycle. In this study, we performed a soil infiltration column test using artificial road runoff equivalent to approximately 11-12 years of rainfall to evaluate the removal of pollutants by using various chemical analyses and bioassay tests. These results indicated that soil infiltration treatment works effectively to remove most of the pollutants such as organic matter (chemical oxygen demand (CODMn) and dissolved organic carbon (DOC)), P species, polycyclic aromatic hydrocarbons (PAHs), numerous heavy metals and oestrogenic activities. Bioassay tests, including algal growth inhibition test, Microtox and mutagen formation potential (MFP) test, also revealed effective removal of toxicities by the soils. However, limited amounts of NO3, Mn, Ni, alkaline earth metals, perfluorooctane sulphonate (PFOS) and perfluorooctane sulphonamide (FOSA) were removed by the soils and they possibly reach the groundwater and cause contamination.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Soil
/
Water Pollutants, Chemical
/
Water
/
Environmental Restoration and Remediation
Type of study:
Evaluation_studies
Language:
En
Journal:
Water Res
Year:
2008
Document type:
Article
Affiliation country:
Japan