ELECTRODEIONI ZATION APPARATUS AND LOW SCALE POTENTIAL WATERTREATMENT

摘要

Electrodeionisation devices having low scale potential as well water trea tment methods using the device are disclosed. The device may have a variety of configurations such as a first depleting compartment disposed between the anode compartment and the cathode compartment, a concentrating compartment in ionic coummunication with the depleting compartment, a second depleting c ompartment in ionic communication with the concentrating compartment and a f irst barrier cell in ionic communication with and disposed between the first depleting compartment and at lest one of the anode compartment and the cath ode compartment. The device may also have configuration directed to the laye ring of the anionic exchange resin beads and/or have at l-east one compartme nt that provides a dominating resistance resulting in a uniform current dist ribution throughout the apparatus. Temperature control may be provided. It i s also possible to arrange for parallel liquid flow.