Patent ID: 6966987

Claim:
A fluid treatment device, comprising: a housing; a filter media disposed within said housing, said filter media comprising a first media bed and a second media bed juxtaposed with said first media bed; and a fluidizer for backwashing said filter media, wherein said fluidizer comprises a first component fluidly connected to a second component, said first component being disposed at a first end of said filter media, and said second component being disposed at or near the interface between said first media bed and said second media bed; wherein said first component is adapted for allowing a first fluid to be delivered through said first component into the first end of said filter media, for backwashing said filter media; and wherein said second component is adapted for allowing the first fluid to be delivered through said second component into said filter media at or near the interface between said first media bed and said second media bed, for backwashing said filter media.