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Spatial and temporal variability of fecal indicator bacteria in an urban stream under different meteorological regimes
- Source :
- Water Science and Technology. 61:3102-3108
- Publication Year :
- 2010
- Publisher :
- IWA Publishing, 2010.
-
Abstract
- As a representative urban stream in Korea, the Gwangju (GJ) stream suffers from chronic fecal contamination. In this study, to characterize levels of fecal pollution in the GJ stream, the monthly monitoring data for seven years (from 2001 to 2007) and the hourly monitoring data from two field experiments were examined with respect to seasonal/daily variations and spatial distribution under wet and dry weather conditions. This research revealed that concentrations of fecal indicator bacteria strongly varied depending on the prevalent meteorological conditions. That is, during the dry daytime, fecal indicator bacteria concentrations decreased due to inactivation from solar irradiation, but rapidly increased in the absence of sunlight, suggesting external source inputs. In addition, bacterial concentrations substantially increased during rainfall events, due probably to a major contribution from combined sewer overflow. The observations in this study can be useful for implementing fecal pollution management strategies and for predicting fecal contamination as a function of meteorological conditions.
- Subjects :
- Pollution
Geologic Sediments
Time Factors
Environmental Engineering
Urban Population
Urban stream
media_common.quotation_subject
Indicator bacteria
Fresh Water
Waste Disposal, Fluid
Feces
Meteorology
Rivers
Water Supply
Humans
Water Science and Technology
media_common
Hydrology
Korea
Contamination
Fecal coliform
Indicator species
Environmental science
Combined sewer
Spatial variability
Water Microbiology
Environmental Monitoring
Subjects
Details
- ISSN :
- 19969732 and 02731223
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- Water Science and Technology
- Accession number :
- edsair.doi.dedup.....504482e70a7a004f1d578664216f0f44