Title:
UNDERDRAIN AND SEPTA FOR MEDIA VESSEL AND METHOD OF CLEANING
Document Type and Number:
WIPO Patent Application WO/2023/059661
Kind Code:
A3
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 by up to 16 inches. The septa may have diameters of 6 inches or more. 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.
Inventors:
DOUPE MICHAEL (CA)
VORA NISHITH (US)
VORA NISHITH (US)
Application Number:
PCT/US2022/045702
Publication Date:
May 19, 2023
Filing Date:
October 04, 2022
Export Citation:
Assignee:
BL TECHNOLOGIES INC (US)
International Classes:
C02F1/00; B08B9/093; B01D24/14; B01J8/02; B08B9/02; B08B9/08; C02F1/28
Domestic Patent References:
| WO2016046834A1 | 2016-03-31 | |||
| WO2020030988A1 | 2020-02-13 |
Foreign References:
| US10981802B2 | 2021-04-20 | |||
| US20200290891A1 | 2020-09-17 | |||
| EP0326359A2 | 1989-08-02 |
Attorney, Agent or Firm:
PUNDSACK, Scott, R. (CA)
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