Quality of roof-harvested rainwater - Comparsion of different roofing materials

Title
Quality of roof-harvested rainwater - Comparsion of different roofing materials
Authors
이주영박기쁨한무영
Keywords
Harvested rainwater quality; Roofing materials; Fecal indicators; Pathogen indicators
Issue Date
2012-03
Publisher
Environmental pollution
Citation
VOL 162, 422-429
Abstract
The objective of the study reported in this paper was to assess the quality of harvested rainwater on the basis of the roofing materials used and the presence of lichens/mosses on the roofing surface. Four pilot structures with different roofing materials (i.e., wooden shingle tiles, concrete tiles, clay tiles [Gi-Wa] and galvanized steel) were installed in a field. The galvanized steel was found to be the most suitable for rainwater harvesting applications, with their resulting physical and chemical water quality parameters meeting the Korean guidelines for drinking water quality (e.g., pH (5.8&#8211;8.5), TSS <500 mg/L, NO3&#8722; < 10 mg/L, SO42&#8722; < 200 mg/L, Al < 0.2 mg/L, Cu < 1 mg/L, Fe < 0.3 mg/L, Pb < 0.05 mg/L, Zn < 1 mg/L, and E. coli (No detection)). In the galvanized steel case, the relatively high water quality was probably due to ultraviolet light and the high temperature effectively disinfecting the harvested rainwater. It was also found that the presence of lichens and mosses may adversely affect the physical, chemical and microbiological quality of rainwater.
URI
http://pubs.kist.re.kr/handle/201004/43749
ISSN
02697491
Appears in Collections:
KIST Publication > Article
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