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KMID : 0613820040140060891
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Journal of Life Science
2004 Volume.14 No. 6 p.891 ~ p.894
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CLPP of Biofilm on Different Pipe Materials in Drinking Water Distribution System
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Lee Dong-Geun
Lee Jae-Hwa
Lee Sang-Hyun
Ha Bae-Jin
Ha Jong-Myuong
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Abstract
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The effect of pipe materials on biofilm communities were investigated by CLPP (community level physiology profile) using Biolog GN plates. Heterotrophic bacterial concentrations were 104 - 106 CFU/cm2 and there was no differences between galvanized iron and carbon steel. Average optical density of Biolog plate was similar between two pipe materials. However, CLPP was different according to the type of pipe materials and exposed times to tap water, and CLPP was independent of bacterial concentration. This represents the differences of bacterial communities with pipes and water contact times.
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KEYWORD
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biofilm, tap water, CLPP, carbon steel, galvanized iron
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