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Drinking water quality concerns from chloramine‐induced degradation of elastomeric compounds
Over the last decade, chloramines have often been used in place of chlorine as a disinfectant because of US Environmental Protection Agency regulations associated with disinfection by‐products. Although the switch generally has been beneficial, subsequent to this change, several utilities have reported problems with substantially higher rates of elastomeric component degradation in the distribution system. To investigate long‐term drinking water quality concerns, accelerated degradation tests were performed for three of the most commonly used elastomers (natural rubber, styrene butadiene rubber, and sulfur‐cured ethylene propylene diene monomer). Test solutions were then analyzed for suspended solids and organic compounds. Most of the organic compounds identified were associated with leaching of compounds from the elastomers; the exception was chloroform, which is thought to be a reaction by‐product. The presence of these organic compounds is considered to be long term because they are continually added to the system as the elastomeric compounds degrade over time.
Drinking water quality concerns from chloramine‐induced degradation of elastomeric compounds
Over the last decade, chloramines have often been used in place of chlorine as a disinfectant because of US Environmental Protection Agency regulations associated with disinfection by‐products. Although the switch generally has been beneficial, subsequent to this change, several utilities have reported problems with substantially higher rates of elastomeric component degradation in the distribution system. To investigate long‐term drinking water quality concerns, accelerated degradation tests were performed for three of the most commonly used elastomers (natural rubber, styrene butadiene rubber, and sulfur‐cured ethylene propylene diene monomer). Test solutions were then analyzed for suspended solids and organic compounds. Most of the organic compounds identified were associated with leaching of compounds from the elastomers; the exception was chloroform, which is thought to be a reaction by‐product. The presence of these organic compounds is considered to be long term because they are continually added to the system as the elastomeric compounds degrade over time.
Drinking water quality concerns from chloramine‐induced degradation of elastomeric compounds
Nagisetty, Raja M. (author) / Rockaway, Thomas D. (author) / Willing, Gerold A. (author)
Journal ‐ American Water Works Association ; 106 ; E402-E407
2014-09-01
6 pages
Article (Journal)
Electronic Resource
English
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