Systems and methods for water treatment

摘要

Electrochemical devices and methods for water treatment are disclosed. An electrodeionization device (100) may include one or more compartments (110) containing an ionselective media, such as boron-selective resin (170). Cyclic adsorption of target ions and regeneration of the media in-situ is used to treat process water, and may be driven by the promotion of various pH conditions within the electrochemical device.

主权项

1. A method of treating seawater, comprising:
introducing seawater comprising chloride ions and boron-containing compounds to a first compartment and an adjacent second compartment of an electrically driven separation device, each of the first and second compartments both-comprising a resin bed and an outlet, the resin bed comprising a blend of an anion exchange resin and a boron selective resin; applying electric current to the electrically driven separation device in a polarity direction to promote transport of the chloride ions in the seawater from the first compartment to the second compartment and to promote ionization of at least a portion of the boron-containing compounds in the seawater in the first compartment; adsorbing at least a portion of the ionized boron-containing compounds on the resin bed in the first compartment; and recovering treated water at the outlet of the first compartment.