Middlesex water company begins $70 million upgrade at its largest water treatment plant

Middlesex water company announced it has begun construction of a new ozone treatment facility and various other upgrades at its carl j. olsen treatment plant in edison, new jersey. project partners include northeast remsco construction serving as the general contractor and jacobs engineering group serving as the consulting engineer. construction is commencing and is anticipated to be completed by mid-2021. middlesex water is investing $70 million on various upgrades at the company’s existing water treatment plant to provide increased resiliency and to replace sodium hypochlorite with ozone as the primary disinfectant in the water treatment process. this will help ensure compliance with increasingly stringent drinking water quality regulations and to mitigate the occurrence of disinfection by-products which can form in parts of the distribution system when chlorine is used. ozone disinfects pathogenic organisms found in water more effectively than chlorine and is currently the most widely used water disinfection method used in the world. in addition to inactivating pathogens in raw water, it also helps to improve taste, odor and is more effective in addressing new chemicals of emerging concern. ozone water treatment, which is formed by using oxygen and electricity, adds no chemicals to the water as it degrades back to oxygen very quickly. in addition to more effective water treatment, the ozone plant will reduce the use of chemicals currently being used to address taste and odor and disinfection by-products. the company will also be upgrading its emergency electric generation back up system to help ensure continued service in the event of power loss.
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