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ATAP Infrastructure Management Ltd.
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  3. ATAP Infrastructure Management Ltd.
  4. Services
  5. Uni-directional Flushing

Uni-directional Flushing

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Uni-directional flushing is an effective way to clean water mains to maintain water quality and system capacity. By isolating runs through systematic opening and closing of mainline valves, a higher water velocity is achieved which, in turn, provides better scouring of pipes and uses less water volume. This high-speed flushing maximizes the shear velocity near the pipe wall, producing a scouring action that can effectively remove sediment deposits, solids accumulations, and biofilm.
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ATAP Infrastructure Management Ltd. uses its flush trailer mounted metering system which is equipped with flow control and ultrasonic measuring that enables the technician maintain the required velocity in the community`s system. Mains are flushed using a minimum velocity of 2 m/s. The volume of water is in the pipes are changed a minimum of three times in each flush section. The trailer is designed to disperse flow directly into sanitary or storm sewers eliminating any erosion issues.

Among its advantages, uni-directional flushing can help improve water quality by restoring disinfectant residual, reducing bacterial re-growth, eliminating taste and odour problems, and reducing disinfectant demand throughout the system. These benefits prolong the life expectancy of the distribution system and reduce the potential for waterborne disease outbreaks.