US 12,097,467 B2
Systems and techniques for cleaning pressure membrane systems using a water-in-air cleaning stream
Seong-Hoon Yoon, Naperville, IL (US); Hui Li, Bolingbrook, IL (US); Craig Myers, Lisle, IL (US); Daniel Meier, Naperville, IL (US); and Donald Johnson, Batavia, IL (US)
Assigned to Ecolab USA Inc., Saint Paul, MN (US)
Filed by Ecolab USA Inc., Saint Paul, MN (US)
Filed on Jan. 16, 2022, as Appl. No. 17/576,984.
Claims priority of provisional application 63/138,770, filed on Jan. 18, 2021.
Prior Publication US 2022/0226782 A1, Jul. 21, 2022
Int. Cl. B01D 65/02 (2006.01); C02F 1/44 (2023.01); C02F 103/02 (2006.01); G01N 21/78 (2006.01); G01N 33/18 (2006.01)
CPC B01D 65/02 (2013.01) [C02F 1/44 (2013.01); G01N 21/78 (2013.01); G01N 33/18 (2013.01); B01D 2321/10 (2013.01); B01D 2321/16 (2013.01); B01D 2321/185 (2013.01); C02F 2103/023 (2013.01); C02F 2209/055 (2013.01); C02F 2209/38 (2013.01); C02F 2209/40 (2013.01); C02F 2303/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling pre-filtration fouling in an automated water analysis system, the method comprising:
generating a feed stream by combining a flow rate of air with a flow rate of water, wherein a ratio of the flow rate of air divided by the flow rate of water is greater than 1;
contacting a membrane with the feed stream inside of a housing, thereby generating a permeate stream and a concentrate stream, wherein the housing pressure isolates the membrane from an ambient environment; and
analyzing the permeate stream to determine a concentration of at least one chemical species in the permeate stream.