Devices and methods for moving, removing and/or installing one or more components of a treatment unit

A filter for filtering water using a filter bed and an air scour system operably associated with the filter bed of granular media to direct air into the filter bed during at least a portion of a washing cycle to assist in removal of impurities trapped in the filter bed during a filtration cycle, the filter comprising:

• (a) a filter compartment having a filter bed including at least one layer of granular media disposed on or above an underdrain, the underdrain being configured to control the flow of liquid through the filter bed, the first compartment including an outer perimeter and an inner perimeter, the outer perimeter being defined by an exterior surface of one or more vertical walls of the filter compartment and the inner perimeter being defined by an inner surface of the one or more vertical walls of the filter compartment;
• (b) an air scour system operably associated with the filter bed for introducing air into the filter bed during at least a portion of a washing cycle to assist in removal of impurities trapped in the filter bed during a filtration cycle, the air scour system including a vertically extending drop pipe fluidly connected to an air distribution header and a plurality of air laterals;
• (c) a flexible conduit having a first end and a second end, the flexible conduit is coilless, the first end of the flexible conduit is connected to a source of pressurized air and the second end of the flexible conduit is connected to said vertically extending drop pipe to supply pressurized air to and through each of said vertically extending drop pipe, said air distribution header and said plurality of air laterals so that pressurized air is introduced into the filter bed during at least a portion of a washing cycle, and wherein said second end of said flexible conduit is disposed within the inner perimeter of the filter compartment so that the second end of said flexible conduit is positioned inwardly of the inner surface of each of the one or more vertical walls of the filter compartment.

A method of filtering water using a filter bed and an air scour system operably associated with the filter bed of granular media to direct air during at least a portion of a washing cycle to assist in removal of impurities trapped in the filter bed during a filtration cycle, the method comprising the steps of:

• (a) providing a filter compartment having a filter bed including at least one layer of granular media disposed on or above an underdrain, the underdrain being configured to control the flow of liquid through the filter bed;
• (b) providing an air scour system operably associated with the filter bed for introducing air into the filter bed during a washing cycle to assist in removal of impurities trapped in the filter bed during a filtration cycle, the air scour system including an air supply pipe fluidly connected to an air header and a plurality of air laterals;
• (c) providing a flexible conduit having a first end and a second end, the flexible conduit is coilless;
• (d) connecting the first end of the flexible conduit to a source of pressurized air;
• and
• (e) connecting the second end of the flexible conduit to said air supply pipe to supply pressurized air to and through each of said air supply pipe, said air header and said plurality of air laterals so that pressurized air is introduced into the filter bed during at least a portion of a washing cycle, wherein the first end of the flexible conduit is disposed in the filter compartment below an uppermost portion of a wall of the filter compartment when the air scour system is in an operating position.