Parkson Corporation has redesigned the DynaSand® sand filtration system to reduce backwash water volume by as much as 90%, according to the results of a recent trial.
Parkson Corporation has redesigned the DynaSand® sand filtration system to reduce backwash water volume by as much as 90%, according to the results of a recent trial. The new DynaSand® EcoWash™ minimizes energy use and reject flow by triggering the backwash cycle only for short periods of time. The control system activates the backwash cycle for media washing only when it is required, based on time or the headloss in the filter's feed channel. When the filters are not backwashing, the level of turbidity drops because the filter is actually able to capture more solids in the existing bed when compared to continuous backwash operation. For operators, the new system requires significantly less attention, as the system monitors conditions and cycles through stages automatically.
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