Granted Patent B2

US 12,623,170 · App. 17/280,556 · Granted May 12, 2026

Inventors: Joseph L. Shmidt (Woodmere, NY); Evgeniya Sergeyevna Vasil'yeva (St. Petersburg, RU); Aleksandr Gennadievich Mitilineos (St. Petersburg, RU); Evgeniy Orekhov (Tallinn, EE); Anastasia Nikolaevna Vilkova (Leningrad region g. Gatchina, RU); Maria Anatol'evna Frolova (St. Petersburg, RU)

Assignee: ELECTROPHOR, INC.

B01D37/02B01D29/33B01D29/66

Abstract

Claims (18)

1 . A method of purifying a liquid comprising the steps of:

precoating a hollow-fiber filter in a hollow-fiber filter cartridge by:

mixing a raw liquid stream which is to be filtered, with a sorbent dispensed from an inline sorbent dispenser ( 2 ), producing a mixed raw liquid/sorbent stream;

introducing the mixed raw liquid/sorbent stream into an inlet ( 6 ) of a hollow-fiber filtration cartridge ( 3 );

flowing the introduced, mixed liquid/sorbent stream across the hollow-fibers contained within the hollow-fiber filtration cartridge, causing the sorbent to be removably deposited on exterior surfaces of the hollow fibers, while the raw liquid flows into an interior of the hollow fibers, producing a filtrate and a removable coating of sorbent on the exterior surfaces of the hollow fibers;

flowing the filtrate out of a purified liquid outlet ( 7 ) of the hollow fiber cartridge ( 3 ); and

terminating the dispensing of sorbent to the raw liquid stream;

flowing the raw liquid stream through the inlet ( 6 ) of the hollow-fiber filtration cartridge ( 3 ), through the sorbent-coated hollow fibers, and a filtrate out through the purified liquid outlet ( 7 );

terminating the flow of the raw liquid stream into the inlet ( 6 );

removing spent sorbent from the surface of the fibers by introducing a flushing liquid into the hollow fiber filter cartridge causing a spent sorbent/flushing liquid mixture stream to flow out of the hollow-fiber filtration cartridge ( 3 ) through a flushing liquid outlet ( 8 );

separating most of the flushing liquid from the spent sorbent/flushing liquid mixture stream by introducing the sorbent/flushing liquid mixture stream into a flushing liquid and sorbent separation means ( 5 ) producing a clarified flushing liquid stream and a deliquefied sorbent;

mixing the clarified flushing liquid stream with the raw liquid stream at a point upstream of the inline sorbent dispenser ( 2 );

flowing the mixed clarified flushing liquid/raw liquid stream into the inlet ( 6 ) of the hollow-fiber filtration cartridge; and

flowing filtrate out through the purified liquid outlet ( 7 ).

2 . The method of purifying a liquid of claim 1 , further comprising the step of:

regenerating any deliquefied sorbent that is capable of being regenerated.

3 . The method of purifying a liquid of claim 1 , further comprising the step of:

disposing of any deliquefied sorbent that is not capable of being regenerated.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (163)