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Recovery of retrograde soluble solute for forward osmosis water treatment

A technology of solute and osmotic pressure, applied in forward osmosis desalination. field, can solve problems such as impure water

Active Publication Date: 2014-01-01
TREVI SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The forward osmosis method does not purify water

Method used

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  • Recovery of retrograde soluble solute for forward osmosis water treatment
  • Recovery of retrograde soluble solute for forward osmosis water treatment
  • Recovery of retrograde soluble solute for forward osmosis water treatment

Examples

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Embodiment Construction

[0018] It should be understood that, where considered appropriate, for simplicity and clarity of illustration, reference numerals may be repeated among the figures to designate corresponding or analogous elements. Additionally, numerous specific details are set forth in order to provide a thorough understanding of the example embodiments described herein. It will be understood, however, to those skilled in the art that the exemplary embodiments described herein may be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the embodiments described herein.

[0019] The present disclosure is directed to improved draw solution systems and methods for forward osmosis water purification or desalination. The draw solution system and method includes means for separating draw solution solutes from an aqueous solvent and concentrating the draw solution solutes as part of a forward osmosis...

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Abstract

Improved systems and processes for forward osmosis water purification or desalination are herein disclosed. According to one embodiment a process for purifying contaminated water is provided wherein a contaminated feed solution stream comprising water and with a first osmotic pressure is passed through a semipermeable membrane to a draw side having a draw solution stream with a second osmotic pressure on a draw side of the semipermeable membrane. The diluted draw solution stream is heated, agglomerated and cooled to produce a cooled single phase water rich stream that is purified to produce a water product stream.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Application no. 61 / 517,687, filed April 25, 2011, entitled "REGENERATION OF RETROGRADE SOLUBLE SOLUTES FOR FORWARD OSMOSIS WATER TREATMENT" and the benefit of U.S. Provisional Application no. 61 / 572,394, filed July 15, 2011, entitled "RETROGRADE SOLUBLE SOLUTE FOR FORWARD OSMOSIS WATER TREATMENT" (Reverse Soluble Solute for Forward Osmosis Water Treatment), both The entire content of is hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to the desalination of seawater, brackish water, waste water and / or polluted water. More particularly, the present invention relates to forward osmosis desalination. Background technique [0004] Forward osmosis is known in the prior art and has been the subject of recent research due to the possibility of future freshwater shortages and the corresponding increase in demand for cost-effecti...

Claims

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Application Information

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IPC IPC(8): B01D11/00B01D37/00C02F1/28
CPCB01D61/58B01D61/002B01D2311/103B01D21/34B01D61/025C02F2103/08C02F1/441B01D61/027C02F1/442B01D2311/14C02F1/444C02F1/02B01D21/009B01D61/145B01D2311/106B01D61/007C02F1/28B01D2311/2642C02F2303/10C02F2303/16C02F1/32C02F1/38C02F2001/007C02F1/445C02F1/52Y02W10/30Y02W10/37Y02A20/131B01D2311/1032B01D61/0024B01D21/262B01D21/267C02F1/325C02F1/40C02F1/50C02F2303/04
Inventor G·卡米格纳尼S·塞基维兹J·W·维布雷
Owner TREVI SYST
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