This invention, methods and apparatus for filtration provides the fluid filtration through the flowing granular material or filtration of the flowing granular material through the flowing fluid. The improved apparatus comprises a body including a substance inlet tubular member for passage of substance into the body, a substance outlet tubular member for passage of substance out of the body, a fluid inlet tubular member for passage of fluid into the body, a fluid outlet device for passage of fluid out of the body, a fluid distribution member comprising a plurality of apertures (perforation), and a diaphragm.

A floating media filter including a filter housing having an influent inlet and an effluent outlet. A floating media is positioned in the housing and forms a static media bed when the filter is in a filtration stage. A diffuser trough is positioned in the filter housing such that the lower surface of the media bed, when the filter is in the filtration stage, is below the upper edge of the diffuser trough. A backwashing mechanism causes dispersion of the media bed during the backwashing stage.

A floating media filter including a filter housing having an influent inlet and an effluent outlet. A floating media is positioned in the housing and forms a static media bed when the filter is in a filtration stage. A diffuser trough is positioned in the filter housing such that the lower surface of the media bed, when the filter is in the filtration stage, is below the upper edge of the diffuser trough. A backwashing mechanism causes dispersion of the media bed during the backwashing stage.

A floating media filter including a filter housing having an influent inlet and an effluent outlet. A floating media is positioned in the housing and forms a static media bed when the filter is in a filtration stage. A diffuser trough is positioned in the filter housing such that the lower surface of the media bed, when the filter is in the filtration stage, is below the upper edge of the diffuser trough. A backwashing mechanism causes dispersion of the media bed during the backwashing stage.

THIS invention relates to a method of constructing a tailings storage facility structure, and to a tailings facility structure. The structure comprises a network of sand channel arteries 10 and permeable capillaries extending through tailings 14. The sand channel arteries 10 are continuous in the vertical and one lateral dimension and connect to a decant point or points. The permeable capillaries 12 are connected at their lowest point to a sand channel artery, and are continuous in one lateral dimension. The capillaries 12 transport water from the tailings 14 to the sand channel arteries 10, and the sand channel arteries transport water from the capillaries 12 and the tailings 14, to the water decant point or points.