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AWWA WQTC65843
- Polyphosphates - the Solution to Distribution System Low Residuals, Biofilm and Pipe Corrosion - Part III
- Conference Proceeding by American Water Works Association, 11/01/2007
- Publisher: AWWA
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This powerpoint presentation presents a corrosion control program by a water system located in Southern California in the southwestportion of Los Angeles County.The goals of this program are:reduce the corrosion rate of unlined steeland cast iron pipes;increase total chlorine residual in thedistribution system; control nitrification and biofilm accumulationwithin distribution system pipes; increase system hydraulic capacity; and,improve water meter accuracy andperformance. The system's first response to minimize these waterquality problems was theimplementation of a comprehensiveflushing program. The results included:established representative sample locations in thedistribution system and collected background data; and,collect over 10 different parameters on a daily,weekly and monthly basis. The main parameters presented here include:Total Chlorine Residual;Heterotrophic Plate Count;Customer Complaints;Time Spent Flushing; and,Water Loss Through Flushing. Includes tables, figures.
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