公开(公告)号：US20200206725A1

公开(公告)日：2020-07-02

申请号：US16631478

申请日：2018-06-09

Applicant: Electrophor Inc

Inventor： EVGENIYA SERGEYEVNA VASIL'YEVA ,  ALEKSANDR GENNADIEVICH MITILINEOS ,  YURIY EVGENIEVICH KAZAKEVICH ,  ULIIA ANATOLIEVNA REMIZOVA

IPC: B01J47/014 ,  B01J20/06 ,  B01J20/28 ,  B01J41/04 ,  B01J41/14 ,  B01J47/127 ,  C02F1/42

Abstract: Hybrid sorbent on the base of anion-exchange polymeric matrix with HFO for selective sorption of arsenic characterized in that, HFO exists in matrix as particles, which at most are amorphous ferrihydrite, fraction of which is not less than 80%, preferably more than 90% from total mass of HFO.The object of the invention and the technical result achieved with the use of the invention is to develop new hybrid sorbent with HFO with increased sorption kinetics of two arsenic forms As(III) and As(V) simultaneously.

公开(公告)号：US10472261B2

公开(公告)日：2019-11-12

申请号：US15934548

申请日：2018-03-23

Applicant: Lehigh University

Inventor： Arup K. SenGupta ,  Hang Dong ,  Michael German ,  Chelsey Shepsko

IPC: C02F1/42 ,  B01J41/12 ,  B01J39/07 ,  B01J47/127 ,  C02F101/16 ,  C02F101/10 ,  C02F101/12 ,  C02F101/14 ,  C02F101/20 ,  C02F103/06

Abstract: A method for purifying waste water, and a dual chamber purification system, in which feed water may be passed first through a hybrid anion exchange unit, and subsequently through a weak acid cationic exchange unit. The hybrid anion exchanger may comprise a hybrid sorbent (HAIX-NanoZr) with dual functional sorption sites. The weak acid cationic exchanger may be a fiber having a shell-core physical configuration with relatively short intra-particle diffusion path length so that the ion exchange sites reside predominantly on the periphery. The system may be used to achieve partial desalination or TDS reduction and concurrent removal of target contaminants (e.g., phosphate, hardness). Further, the system may be regenerated using CO2 as the sole regenerant for both the hybrid anion exchanger and the weak acid cationic exchanger, thus producing spent regenerant with no externally added chemicals.

公开(公告)号：US10005681B2

公开(公告)日：2018-06-26

申请号：US15474297

申请日：2017-03-30

Applicant: Board of Regents, The University of Texas System

Inventor： Anthony J. Tarquin ,  William S. Walker ,  Guillermo G. Delgado

IPC: B01D61/00 ,  B01D63/00 ,  B01D35/04 ,  B01D35/14 ,  C02F1/44 ,  B01D21/30 ,  B01D21/24 ,  B01D61/02 ,  B01D69/08 ,  B01D65/02 ,  B01J47/127 ,  B01D61/12 ,  C02F103/08 ,  C02F101/10 ,  C02F101/12 ,  C02F101/20

CPC classification number: C02F1/441 ,  B01D61/022 ,  B01D61/025 ,  B01D61/04 ,  B01D61/12 ,  B01D65/02 ,  B01D69/08 ,  B01D2311/04 ,  B01D2311/06 ,  B01D2311/08 ,  B01D2311/10 ,  B01D2311/14 ,  B01D2311/25 ,  B01D2317/022 ,  B01D2317/04 ,  B01D2321/02 ,  B01D2321/40 ,  B01J47/127 ,  C02F2101/101 ,  C02F2101/12 ,  C02F2101/203 ,  C02F2103/08 ,  C02F2209/006 ,  C02F2209/008 ,  C02F2209/02 ,  C02F2209/03 ,  C02F2209/05 ,  C02F2209/06 ,  C02F2209/40 ,  C02F2301/08 ,  Y02A20/131 ,  B01D2311/2649 ,  B01D2311/106 ,  B01D2311/16

Abstract: The present invention includes systems and methods for treatment of seawater RO system for recovering most of the water (i.e., 85-90%) from the concentrate of a brackish groundwater reverse osmosis treatment system that may use, e.g., a batch method. With proper pH control and antiscalant dosage, the batch-treatment SWRO system of the present invention can be used to recover water from silica-saturated RO concentrate without fouling the membranes. Silica concentrations of over 1,000 mg/L are attainable with relatively minimal pre-treatment of the silica-saturated feed solution.