Electrodeionization apparatus and method

US6649037B2 · kind B2 · utility

Assignee

• United States Filter Corporation · US

Inventors

• Li-Shiang Liang · Harvard, US
• Anil D. Jha · San Francisco, US
• John Arba · Bradford, US
• Stephane Dupont · La Louvière, BE

Key dates

• Filing date: May 29, 2001
• Grant date: Nov 18, 2003
• Expiry date: May 29, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2209/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An electrodeionization apparatus and method for purifying a fluid. A fluid, such as water, can be purified by removing weakly ionizable species from the fluid. Weakly ionizable species may be dissociated at different pH levels to facilitate removal from the fluid in an electrodeionization device.