饮用水中磷对细菌再生长的限制

Phosphorus limitation on bacterial regrowth in drinking water.

作者信息

Sang Jun-qiang, Zhang Xi-hui, Yu Guo-zhong, Wang Zhan-sheng

机构信息

Research Center for Environmental Engineering and Management, Shenzhen Graduate School, Tsinghua University, Shenzhen 518057, China.

出版信息

J Environ Sci (China). 2003 Nov;15(6):773-8.

PMID:14758895

Abstract

Assimilable organic carbon (AOC) test and bacterial regrowth potential (BRP) analysis were used to investigate the effect of phosphorus on bacterial regrowth in the drinking water that was made from some raw water taken from a reservoir located in northern China. It was shown that AOC of the drinking water samples increased by 43.9%-59.6% and BRP increased by 100%-235% when 50 microg/L PO4(3-)-P(as NaH2 PO4) was added alone to the drinking water samples. This result was clear evidence of phosphorus limitation on bacteria regrowth in the drinking water. This investigation indicated the importance of phosphorus in ensuring biological stability of drinking water and offered a novel possible option to restrict microbial regrowth in drinking water distribution system by applying appropriate technologies to remove phosphorus efficiently from drinking water in China.

摘要

采用可同化有机碳（AOC）测试和细菌再生长潜力（BRP）分析方法，研究了磷对取自中国北方某水库原水制成的饮用水中细菌再生长的影响。结果表明，单独向饮用水样品中添加50μg/L的PO4(3-)-P（以NaH2PO4计）时，饮用水样品的AOC增加了43.9%-59.6%，BRP增加了100%-235%。该结果清楚地证明了磷对饮用水中细菌再生长的限制作用。该研究表明了磷在确保饮用水生物稳定性方面的重要性，并为中国通过应用适当技术从饮用水中有效去除磷来限制饮用水分配系统中微生物再生长提供了一种新的可能选择。