Importance

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Abstract

Front flush subsystems and filtration systems including front flush subsystems are provided. In one embodiment, the filtration system includes a front flush subsystem and a filter unit, which separates a pressurized feed stream into a reject stream and a permeate stream. The front flush subsystem includes, in turn, a pressure vessel having a permeate inlet fluidly coupled to the filter unit and configured to receive the permeate stream therefrom, a permeate storage chamber fluidly coupled to the permeate inlet and configured to store permeate therein, and a permeate outlet fluidly coupled to the permeate storage chamber. A discharge mechanism is coupled to the pressure vessel. When actuated, the discharge mechanism blocks or otherwise interrupts permeate flow through the permeate outlet, while expelling the permeate stored in the permeate storage chamber through the permeate inlet such that permeate is temporarily flushed through the filter unit in a reverse direction.

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First Claim