Search International and National Patent Collections

1. (WO2018162981) SYSTEMS AND METHODS OF MARKER BASED DIRECT INTEGRITY TESTING OF MEMBRANES

Pub. No.:    WO/2018/162981    International Application No.:    PCT/IB2018/000302
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Thu Mar 08 00:59:59 CET 2018
IPC: G01N 11/02
B01D 65/10
C02F 1/44
Applicants: 1934612 ONTARIO INC.
Inventors: POWELL, Anthony, L.
BUTTERS, Brian, E.
Title: SYSTEMS AND METHODS OF MARKER BASED DIRECT INTEGRITY TESTING OF MEMBRANES
Abstract:
The present disclosure relates, according to some embodiments, to methods of marker based direct integrity testing of at least one membrane comprising: (a) dosing a feed fluid of a loop with at least one marker comprising at least one challenge particle, the loop comprising: the feed fluid; a pump 220 comprising an outlet stream 222; a membrane module 218 comprising the at least one membrane and a membrane module outlet stream 210, wherein the membrane module 218 is in fluid communication with the outlet stream 222; a marker recycle stream 226 in fluid communication with the membrane module outlet stream 210 and the pump 220; and a means to measure particle concentrations; (b) circulating the feed fluid through the membrane module 218 at least once to produce a filtrate comprising a filtered at least one marker; (c) measuring a filtrate particle concentration of the filtered at least one filtered marker in the filtrate to produce a filtrate concentration measurement; and (d) calculating a log removal value from the filtrate concentration measurement and the feed concentration measurement; wherein the log removal value is less than about 3 μm.