Coquitlam Water Treatment Plant UpgradedCoquitlam Water Treatment Plant Upgraded<div class="ExternalClass75993E94741F42E1AC14F10E21555B66"><p>​The Coquitlam Water Treatment Plant has been upgraded to provide sodium hypochlorite disinfection of its drinking water supply – making it the last treatment plant in Metro Vancouver to switch from the previously used chlorine gas disinfection system.</p><p>Chlorine gas had been used by Metro Vancouver to disinfect drinking water since the 1940s and had historically been in place at all three source reservoirs – Seymour, Capilano and Coquitlam. Back then, Metro Vancouver’s water treatment division was small and had its own chlorine truck to deliver chlorine gas to the water disinfection plants and wastewater treatment plants.</p><p>In 2017, a temporary sodium hypochlorite disinfection system was installed at the Coquitlam Water Treatment Plant to provide uninterrupted service during construction of its new facilities. The chlorine gas system was permanently disconnected at that time and removed to accommodate four new 35,000-litre sodium hypochlorite storage tanks. </p><p>The project included construction of new chemical vacuum feeders in a concrete spill containment area; updating the automation and control system for the feeders; retrofitting the old chlorine gas cylinder room for the new sodium hypochlorite tanks; and installing platforms for staff to access the instruments at the top of the tanks. </p><p>The exterior of the building was also modified with removable panels to allow for tank removal and maintenance. In addition, a chemical offloading pad with spill containment was constructed on the south side of the building. The project will ensure that the Coquitlam Water Treatment Plant continues to provide clean and safe drinking water to the region. </p><p>The new disinfection system, completed this past spring, performed well throughout the summer in meeting the high system demands. The new system is also expected to provide a safer working environment for Metro Vancouver staff, while reducing maintenance costs - purchasing chlorine gas equipment and spare parts was expensive – and eliminating the need for specialized staff training and procedures related to handling chlorine gas. </p></div>http://heimat-deutschland.info/metroupdate/PublishingImages/issue47-coquitlam.jpg2018-10-19T07:00:00ZGP0|#7ccd2f9e-3572-495b-a89d-88c980beedcc;L0|#07ccd2f9e-3572-495b-a89d-88c980beedcc|Issue 47;GTSet|#d14ffe11-45dc-48fb-8684-ff109cf15a74<div class="ExternalClassE08135495AB645A9A70EDFEC416F5EED"><p>​<span lang="EN-CA">The Coquitlam Water Treatment Plant has been upgraded to provide sodium hypochlorite disinfection of its drinking water supply –  making it the last treatment plant in Metro Vancouver to switch from the previously used chlorine gas disinfection system.</span></p></div>0

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