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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received May 18, 2010
Accepted July 13, 2010

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Influence of disinfection on bacterial regrowth in pilot distribution system

Young-Cheol Chang Andrew Andy Randall¹ OnYou Choi² DuBok Choi² Hoon Cho^3† Shintaro Kikuchi

Division of Applied Sciences, College of Environmental Technology, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran 050-8585, Hokkaido, Japan ¹Department of Civil and Environmental Engineering, University of Central Florida, P.O. Box 162450, Orlando, Florida 32816-2450, USA ²Department of Environmental health, Cho-dang University, 419, Songnam-ri, Muan-up, Muan-gun, Jeonnam 534-800, Korea ³Department of Polymer Science and Engineering, Chosun University, Gwangju 501-759, Korea

hcho@chosun.ac.kr

Korean Journal of Chemical Engineering, November 2010, 27(6), 1860-1863(4), 10.1007/s11814-010-0286-4

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Abstract

A correlation between heterotrophic plate count (HPC) and chloramine residual in pilot distribution systems (PDSs) was investigated. The data was derived from an AWWARF (the Awwa Research Foundation) and Tampa Bay Water tailored collaboration project to determine the effect of blending different waters on distribution system water quality. Seven different finished waters were produced from surface, ground, or simulated brackish water sources on site and fed to 18 independent PDSs, either as a single finished water or as a blend of several finished waters. Significantly higher numbers for PDS HPC were observed below 0.06 mg/L of combined chlorine residual. Changes in assimilable organic carbon (AOC) levels between influent and effluent of the PDSs increased as disinfectant dosage decreased in distribution systems. Significant differences between input and output AOC (ΔAOC) were observed when the chloramine residual was less than 1.0 mg/L, and particularly when less than 0.5 mg/L. High HPC counts often occurred when chloramine residual was less than 0.5 mg/L, regardless of AOC levels or AOC stability. However AOC instability could occur at high influent AOC levels even in the presence of residual greater than 0.5 mg/L, with corresponding high HPC counts.

Keywords

Assimilable Organic Carbon Biostability Chloramine Pilot Distribution System

References

Geldreich EE, Nash HD, Reasoner DJ, Taylor RH, J. Am. Water Works Assoc., 64, 596 (1972)
Maul A, Shaarawi EL, Block JC, Sci. Total Environ., 44, 201 (1985)
Maul A, Shaarawi EL, Block JC, Sci. Total Environ., 44, 215 (1985)
Lechevallier MW, Babcock TM, Lee RG, Appl. Environ. Microbiol., 53, 2714 (1987)
Candy JP, Angels ML, Water Res., 35, 2677 (2001)
Ollos PJ, Slawson RM, Huck PM, Wat. Sci. Tech., 38, 275 (1998)
Lechevallier MW, Lowry CD, Lee RG, Gibbon DL, J. Am. Water Works Assoc., 82, 87 (1990)
Skadsen J, J. Am. Water Works Assoc., 85, 95 (1993)
Power K, Nagy LA, Report No. 4 Urban Water Research Association of Australia, Melbourne, Vic. 16 (1989)
Neden DG, Jones RJ, Smith JR, Kirmeyer GJ, Foust GW, J. Am. Water Works Assoc., 84, 80 (1992)
Debeer D, Srinivasan R, Stewart PS, Appl. Environ. Microbiol., 60, 4339 (1994)
Van der kooij D, Veenendaal HR, Baars-Lorist C, Van der klift DW, Drost YC, Water Res., 23, 1313 (1995)
Jones K, Bradshaw SB, J. Appl. Bacteriol., 80, 458 (1996)
Norton CD, Lechevallier MW, J. Am. Water Works Assoc., 89, 66 (1997)
Momba MNB, Cloete TE, Venter SN, Kfir R, Water Sci. Technol., 38, 2863 (1998)
Vikesland PJ, Valentine RL, Environ. Sci. Technol., 34, 83 (2000)
Smith SE, Ta T, Holt DM, Delanoue A, Colbourne JS, Chamberlain AHL, Lloyd BJ, J. Inst. Water Environ. Manage., 13, 7 (1999)
Hallam NB, West JR, Forster CF, Simms J, Water Res., 35, 4063 (2001)
Niquette P, Servais P, Savoir R, Water Res., 35, 675 (2001)
Zhang W, Digiano FA, Water Res., 36, 1469 (2002)
American Public Health Association: Standard Methods for the Examination of Water and Wastewater, 19th Ed., Washington, DC (1995)
Lechevallier MW, Lowry CD, Lee RG, Gibbon DL, J. Am. Water Works Assoc., 85, 111 (1993)
Van der kooij D, J. Am. Water Works Assoc., 84, 57 (1992)
Escobar I, Randall AA, J. Am. Water Works Assoc., 91, 76 (1999)
Escobar I, Randall AA, Water Res., 34, 1680 (2000)
Escobar I, Randall AA, Water Res., 35, 4444 (2001)