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Water treatment method, and associated module and facility

A treatment method and technology of treatment chambers, which are used in seawater treatment, water/sewage treatment, special compound water treatment, etc.

Active Publication Date: 2018-08-03
SUEZ GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, it makes it possible to solve the problem of the sensitivity of existing coalescers to the precipitation of salts contained in saumures

Method used

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  • Water treatment method, and associated module and facility
  • Water treatment method, and associated module and facility
  • Water treatment method, and associated module and facility

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Embodiment Construction

[0075] The method according to the invention comprises a liquid-liquid extraction (LLE) step which consists in extracting cations and anions from water by phase transfer of these ions from the aqueous phase to the hydrophobic liquid phase, which is then separated from the treated water and optionally regenerated.

[0076] The hydrophobic liquid phase used in the methods, modules and devices according to the invention is generally referred to by the term "liquid film".

[0077] Such a hydrophobic liquid film may be, for example, an ionic liquid comprising salts of one or more anionic and / or cationic surfactants which are liquid at ambient temperature. More generally, these hydrophobic liquids may be formulations comprising one or more hydrophobic liquid matrices and one or more active molecules capable of transferring the anions or cations desired to be removed from the aqueous phase to the hydrophobic phase. These active substances can be dispersed or dissolved in a hydropho...

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Abstract

The present invention concerns water treatment methods allowing cations and anions to be extracted from an aqueous effluent by bringing said aqueous effluent into contact with a hydrophobic liquid phase, also comprising at least one step of bringing the effluent into contact with a hydrophobic solid membrane, in order to eliminate the residual hydrophobic liquid membrane in the treated effluent bycoalescence on said hydrophobic solid membrane. The methods according to the invention comprise seawater desalination methods. The invention also concerns a desalination module and the facility associated therewith, characterised in that they comprise at least one coalescer.

Description

technical field [0001] The present invention relates to a water treatment process enabling the extraction of cations and anions from an aqueous effluent by contacting said aqueous effluent with a hydrophobic liquid. The method according to the invention comprises a seawater desalination method, wherein in particular calcium ions, sodium ions, potassium ions, chloride ions, sulphate ions, carbonate ions are extracted; and a method for the removal of metal ions, such as metal cations, The metal cations are derived from transition metals such as iron, gold, silver, copper, chromium, platinum, lead, tin, cadmium, cobalt, zinc, nickel, mercury, ... or basic metals such as sodium, cesium, strontium, barium, rubidium , or metalloids such as arsenic…. The object of the invention is in particular a method for the desalination of water by contacting an aqueous effluent with a hydrophobic liquid membrane. The object of the invention is also a module enabling the implementation of the m...

Claims

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Application Information

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IPC IPC(8): C02F1/26C02F1/44B01D61/38B01D61/40C02F103/08
CPCC02F1/444B01D2325/38C02F2103/08C02F2305/04Y02A20/131C02F1/26
Inventor A·布雷昂A·法布尔M·菲利贝尔L·盖
Owner SUEZ GRP