Quality assessment of rooftop runoff and harvested rainwater from a building catchment

Title
Quality assessment of rooftop runoff and harvested rainwater from a building catchment
Authors
이주영김형준한무영
Keywords
correlation analysis; first flush; principal component analysis; rainwater harvesting
Issue Date
2011-06
Publisher
Water science and technology
Citation
VOL 63, NO 11, 2725-2731
Abstract
A major obstacle to the promotion of rainwater harvesting is chemical and microbiological concerns. To determine its suitability as an alternative water resource, water quality parameters such as pH, turbidity and metal ion concentrations and counted total coliform, Escherichia coli and heterotrophic bacteria were measured. It was observed that the stored rainwater had a neutral average pH and that its turbidity depended on the duration and intensity of the rainfall event. Metal concentrations were within the permissible limits specified in the Korea drinking water standard. In addition, counts of coliform, E. coli and heterotrophic bacteria were higher in the first flush 5 min after the start of the rainfall event. Principal component analysis and correlation analysis through 40 events in 2009 showed that the quality of stored rainwater depends on the conditions of the catchment and storage tank and the antecedent dry period.
URI
http://pubs.kist.re.kr/handle/201004/41131
ISSN
0273-1223
Appears in Collections:
KIST Publication > Article
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