Study on Phosphorus and Bacterial Regrowth in Drinking Water

Deng Ling Jiang; Yu Min Zhang; Ning Zheng

doi:10.4028/www.scientific.net/AMR.461.466

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 461Study on Phosphorus and Bacterial Regrowth in...

Study on Phosphorus and Bacterial Regrowth in Drinking Water

Abstract:

Phosphorus limitation on bacterial regrowth was studied in source water, water treatment process and water distribution system of J Water Supply Plant in T city, by modified AOC method and MAP analysis. Based on the study, the follows can be concluded: ① MAP(Microbially Available Phosphorus) concentration was higher in source water and water treatment process, which was 5～38µg PO43－-P/L. However in water distribution, MAP concentration was lower, which was less than 5µg PO43--P/L. ②Coagulation and sedimentation can remove MAP efficiently. 31%～68% of MAP can be removed in these process. ③ In source water and water treatment process, there was no evident difference between AOCpotential, AOCp and AOCnative. So assimilable organic carbon (AOC) was the most important factor of bacterial regrowth. In water distribution system, the concentration of AOCpotential and AOCp were 2～8.7 times of the concentration of AOCnative. So phosphorus limited bacterial regrowth.

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Periodical:

Advanced Materials Research (Volume 461)

Pages:

466-469

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.461.466

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Online since:

February 2012

Authors:

Deng Ling Jiang, Yu Min Zhang, Ning Zheng

Keywords:

AOC_potential, Assimilable Organic Carbon (AOC), Bacterial Regrowth, Microbially Available Phosphorus (MAP), Phosphorus Limitation

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