The upper connection device (4) is formed by at least one claw or bracket. This is removably fastened to the top edge of the refuse container (1), and engages over the dividing wall (2). The lower holder element is fastened to the base of the container and consists of a fixing rail (12). The rail is glued to the base of and/or clamped between the walls of the container, and holds the dividing wall. Fixing rail and/or connection device consist mainly of plastic. The rail may consist of two crossing rail sections. The ends of the rail to be clamped consist of enlarged heads (25).