Abstract: A fluid filtration bag includes an outer porous fabric sleeve, and inner porous fabric liner, and a coherent filler material between the sleeve and liner. The filler material can act as the ancillary filtering media, while the sleeve and liner can act as containment mechanisms for the filler material. The liner has a pleated configuration, in which trough areas of the pleats are stitched to the fabric sleeve to form a series of tubes for containment and support of the filler material.

Abstract: A collapsible, bag-like container, that incorporates the features of a rigid, free-standing container, with the flexibility and collapsibility of a bulk bag. Stiffening members are placed into pockets, created by sewing together two sheets of woven polypropylene. The stiffening members may be removed and placed inside the bag for shipping, and then installed in the sewn pockets to create a collapsible container, suitable for containment, and shipment, of bulk materials of up to seventy (70) percent liquid composition. The container side walls have flaps that can be folded onto the top of the container, and tied together with flexible tie elements, such that the container has a desired transverse reinforcement.