Patent ID: 7413649

Claim:
A treatment system comprising: at least one pod having rigid and impermeable inner and outer walls, a fluid inlet side and a fluid outlet side; said inner wall defining an opening extending through an interior portion of said pod; at least one chemical treatment media disposed in said interior portion so that a fluid path extends through the fluid inlet side to said interior portion and then through the fluid outlet side; a riser extending though said opening, said riser having a smaller outer diameter than a diameter of said opening to thereby define an annular passage between said pod and said riser; at least one valve assembly controlling movement of a fluid within said annular passage; said at least one pod serviced by directing the fluid into said riser and then directing the fluid through said at least one pod so that a portion of the fluid flowing through said annular passage, wherein said valve assembly comprises a valve housing and at least one one-way valve disposed radially between said pod and said riser.