請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/45687
標題: Effects of chlorine level on the growth of biofilm in water pipes
作者: Chu, C.W.
盧重興
Lu, C.Y.
Lee, C.M.
Tsai, C.
李季眉
關鍵字: water pipe
biofilm growth
chlorine level
HPC
ATP
SEM
drinking-water
distribution-system
bacterial
期刊/報告no:: Journal of Environmental Science and Health Part a-Toxic/Hazardous Substances & Environmental Engineering, Volume 38, Issue 7, Page(s) 1377-1388.
摘要: Three analogous laboratory-scale water pipe systems were constructed to study the effects of three chlorine levels of finished water on the growth of biofilm. The experimental results indicated that the heterotrophic plate counts (HPCs) of biofilm for chlorine-free water were approximately 2 and 3 orders of magnitude higher than those for low-chlorine water (0.3-0.5mg Cl-2/L) and high-chlorine water (1.2-1.5mg Cl-2/L). The difference in 14PC levels between low-chlorine water and high-chlorine water was below I order. Average biofilm formation rates are 325 ATP pg/cm(2) -day for chlorine-free water, 159 ATP pg/cm(2)-day for low-chlorine water and 118 ATPpg/cm(2)-day for high-chlorine water. The scanning electron microscope (SEM) observation showed that bacterial species separated from the biofilm were more complex than from the finished water. The Gram-negative bacteria were dominant in these species.
URI: http://hdl.handle.net/11455/45687
ISSN: 1093-4529
文章連結: http://dx.doi.org/10.1081/ese-120021132
顯示於類別:環境工程學系所

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