Underdrain for media vessel and method of cleaning
AssigneeBl Technologies, Inc.
InventorMichael DOUPE
Life of this patent
Estimating the term…
Abstract
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel. The header is attached to the bottoms of the removable pipe sections. Each pipe section, and its associated septum, may be removed individually. To clean the vessel, after media is removed from the vessel the pipe sections are removed sequentially while the header remains otherwise attached to the vessel. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel.
Claims17
An underdrain system for a vessel comprising,
- an external header;
- a plurality of removable pipe sections, each having an upper end and a lower end;
- and,
- a plurality of septa, each septum corresponding to one of the removable pipe sections,
- wherein the bottom of each movable pipe section is attached to the external header, the top of each removable pipe section is attached to the bottom of the vessel, and the septa extend upwards into the tank.
A method of cleaning a media pressure vessel comprising the steps of,
- removing one or more pipe sections from between an external header and the vessel while the header remains otherwise attached to the vessel;
- and,
- removing one or more septa associated with the one or more pipe sections from the vessel.
Dependencies are inferred from the claim text.