运用营养物响应技术评估快速砂滤池砾石氯化处理的效果。
Use of nutrient response techniques to assess the effectiveness of chlorination of rapid sand filter gravel.
作者信息
Lytle M S, Adams J C, Dickman D G, Bressler W R
机构信息
Department of Molecular Biology, University of Wyoming, Laramie 82071.
出版信息
Appl Environ Microbiol. 1989 Jan;55(1):29-32. doi: 10.1128/aem.55.1.29-32.1989.
A direct viable counting method was used to rapidly assess the effectiveness of chlorination of biofilms on rapid sand filter gravel. A total of 50% of the cells were nutrient responsive after exposure to 0.5 mg of chlorine per liter, while this value was 25% after exposure to 25 mg of chlorine per liter. A large variation was seen in the numbers of nutrient-responsive cells on different rocks. More cells attached to the sandblasted side of marbles than to the smooth side, but there was no difference in eight of nine cases in the proportion of survival to chlorination between the two different sides. The effectiveness of chlorination appeared to be influenced by the species of bacterium in the biofilm.
采用直接活菌计数法快速评估快速砂滤池砾石上生物膜氯化处理的效果。每升暴露于0.5毫克氯后，共有50%的细胞对营养物质有反应，而暴露于25毫克氯后，这一数值为25%。在不同岩石上，对营养物质有反应的细胞数量存在很大差异。附着在大理石喷砂面的细胞比光滑面的多，但在9个案例中的8个案例中，两种不同面氯化处理后的存活比例没有差异。氯化处理的效果似乎受生物膜中细菌种类的影响。
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