Volume 18 Issue 2
Nov.  2019
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WEI Lu, Xiao-jian ZHANG. Factors Affecting Bacterial Growth in Drinking Water Distribution System[J]. Biomedical and Environmental Sciences, 2005, 18(2): 137-140.
Citation: WEI Lu, Xiao-jian ZHANG. Factors Affecting Bacterial Growth in Drinking Water Distribution System[J]. Biomedical and Environmental Sciences, 2005, 18(2): 137-140.

Factors Affecting Bacterial Growth in Drinking Water Distribution System

Funds:  国家自然科学基金(50238020)%国家高技术研究发展计划(863计划)(2002AA601140)
  • Objective To define the influence of some parameters, including assimilable organic carbon (AOC), chloramine residual, etc. on the bacterial growth in drinking water distribution systems. Methods Three typical water treatment plants in a northern city (City T) of China and their corresponding distribution systems were investigated. Some parameters of the water samples, such as heterotrophic plate content (HPC), AOC, CODMn, TOC, and phosphate were measured. Results The AOC in most water samples were more than 100 μg/L, or even more than 200 μg/L in some cases. The HPC in distribution systems increased significantly with the decrease of residual chlorine. When the residual chlorine was less than 0.1 mg/L, the magnitude order of HPC was 104 CFU/mL; when it was 0.5-0.7 mg/L, the HPC was about 500 CFU/mL. Conclusion For controlling the biostability of drinking water, the controlling of AOC and residual chlorine should be considered simultaneously. The influence of phosphors on the AOC tests of water is not significant. Phosphors may not be the limiting nutrient in the water distribution systems.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Factors Affecting Bacterial Growth in Drinking Water Distribution System

Funds:  国家自然科学基金(50238020)%国家高技术研究发展计划(863计划)(2002AA601140)

Abstract: Objective To define the influence of some parameters, including assimilable organic carbon (AOC), chloramine residual, etc. on the bacterial growth in drinking water distribution systems. Methods Three typical water treatment plants in a northern city (City T) of China and their corresponding distribution systems were investigated. Some parameters of the water samples, such as heterotrophic plate content (HPC), AOC, CODMn, TOC, and phosphate were measured. Results The AOC in most water samples were more than 100 μg/L, or even more than 200 μg/L in some cases. The HPC in distribution systems increased significantly with the decrease of residual chlorine. When the residual chlorine was less than 0.1 mg/L, the magnitude order of HPC was 104 CFU/mL; when it was 0.5-0.7 mg/L, the HPC was about 500 CFU/mL. Conclusion For controlling the biostability of drinking water, the controlling of AOC and residual chlorine should be considered simultaneously. The influence of phosphors on the AOC tests of water is not significant. Phosphors may not be the limiting nutrient in the water distribution systems.

WEI Lu, Xiao-jian ZHANG. Factors Affecting Bacterial Growth in Drinking Water Distribution System[J]. Biomedical and Environmental Sciences, 2005, 18(2): 137-140.
Citation: WEI Lu, Xiao-jian ZHANG. Factors Affecting Bacterial Growth in Drinking Water Distribution System[J]. Biomedical and Environmental Sciences, 2005, 18(2): 137-140.

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