Patent ID: 8561220

Claim:
An ultra low flushing volume toilet comprising: a toilet pan having a toilet pan outlet and a bottom, the bottom of the toilet pan configured to be placed on a floor; and a device substantially positioned between the toilet pan outlet and the bottom of the toilet pan, the device comprising: a centrifuge separator arranged and configured to separate liquids and solids, the centrifuge separator comprising: a substantially horizontal inlet connected to the toilet pan outlet; a solids outlet primarily for solids and connected to a sewerage drainline; and a liquids outlet primarily for liquids; a reservoir positioned beneath the centrifuge separator, the reservoir comprising: an inlet in fluid communication with the liquids outlet of the centrifuge separator; an upper narrowed portion arranged and configured to cause an acceleration in a height increase of the liquids up a syphon pipe; and a lower wider portion in communication with the upper narrowed portion at a boundary; and the syphon pipe connected to the inlet, the syphon pipe having a weir height positioned at substantially the same height as the boundary, the syphon pipe having a syphon pipe outlet positioned below the reservoir, the reservoir arranged and configured to syphonically empty substantially all of its contents into a sewerage drainline after at least 2 flushes of the toilet, wherein the centrifuge separator and the reservoir have a combined vertical dimension less than the maximum height of the toilet pan outlet such that the device is concealed when installed adjacent to the toilet.