Washbox

1. A washbox, comprising:

inner and outer portions defining a tortuous media pathway therebetween; and,

an adjustment mechanism configured to move either the inner portion or the outer portion relative to the other of the inner portion and the outer portion to redefine the tortuous media pathway.

2. The washbox of claim 1 , wherein the inner portion comprises a first surface that generally extends along a first axis and that includes multiple protuberances and wherein the outer portion comprises a second surface that generally extends along a second axis and that includes multiple different protuberances that face the first surface.

3. The washbox of claim 2 , wherein the first and second axes are parallel.

4. The washbox of claim 2 , wherein the adjustment mechanism is operable to move the inner and outer portions relative to one another from a first configuration where the protuberances of the first surface are generally opposed to the protuberances of the second surface into a second configuration where the protuberances of the first surface are generally offset relative to the protuberances of the second surface.

5. The washbox of claim 2 , wherein the adjustment mechanism is operable to move the inner or outer portions one or more of: parallel to the first axis, orthogonal to the first axis, and oblique to the first axis.

6. The washbox of claim 1 , further comprising a vibration assembly configured to vibrate one or both of the inner and outer portions.

7. The washbox of claim 6 , wherein the adjustment mechanism comprises the vibration assembly.

8. The washbox of claim 1 , further comprising a weir for controlling a water height relative to the washbox and wherein the adjustment mechanism is configured to automatically control the weir.

9. The washbox of claim 1 , wherein the adjustment mechanism is configured to move either the inner portion or the outer portion by distending either the inner portion or the outer portion toward the other of the inner portion or the outer portion.

10. The washbox of claim 1 , wherein the adjustment mechanism is configured to move either the inner portion or the outer portion relative to at least one of a vertical reference axis and a horizontal reference axis.

11. A washbox, comprising:

one or more surfaces that define a media pathway therebetween; and,

wherein the one or more surfaces are configured to be manipulated during use in a manner that adjusts a dimension of the media pathway.

12. The washbox of claim 11 , wherein the media pathway comprises a tortuous media pathway.

13. A system, comprising:

a washbox configured to define a pathway along which filter media passes in a first direction and water flows in a second different direction to clean the filter media; and,

an adjustment mechanism configured to adjust the pathway.

14. The system of claim 13 , wherein the washbox comprises a first portion interposed between inner and outer portions and wherein the adjustment mechanism is configured to move at least one of the inner, outer, and first portions relative to one another to adjust the pathway.

15. The system of claim 13 , wherein the adjustment mechanism is configured to adjust a relative constriction of the pathway and a head pressure associated with the water flow.

16. The system of claim 13 , wherein the adjustment mechanism is configured to adjust a minimum dimension of the pathway.

17. A system, comprising:

a media bed configured to filter contaminants from a fluid; and,

an adjustable washbox configured to receive media from the media bed and to separate the contaminants from the received media and wherein the adjustable washbox includes an inner portion and an outer portion that define a media pathway therebetween and the adjustable washbox is automatically adjustable by moving either the inner portion or the outer portion relative to the other of the inner portion and the outer portion to redefine the media pathway responsive to a parameter change associated with the system.

18. The system as recited in claim 17 , wherein the adjustable washbox further comprises a mechanism for controlling head pressure between the media bed and the adjustable washbox.

19. The system as recited in claim 17 , further comprising an adjustment mechanism that is configured to perform the moving.

20. The system as recited in claim 19 , wherein the adjustment mechanism is configured to perform the moving by distending at least one of the inner and outer portions.