HIGH PRESSURE-RESISTANT TYPE ELECTRICAL DEIONIZATION APPARATUS, HIGH PRESSURE-RESISTANT TYPE ELECTRICAL DEIONIZATION SYSTEM AND METHOD OF PRODUCING ULTRAPURE WATER USING HIGH PRESSURE-RESISTANT TYPE DEIONIZATION SYSTEM

摘要

The present invention provides an electrical deionization apparatus suitable for an ultra pure water production system allowing high pressure raw water from an atomic power plant to be reused as the ultra water. The electric deionization stack 10 comprises a plurality of compartments defined by a compartment frame 11 and an ion exchange membrane 12. The compartments at the opposite ends construct an anode compartment 13 and a cathode compartment 14. The compartments, which are located between the anode compartment 13 and the cathode compartment 14, construct at least one concentrating compartment 15 and at least one deionizing compartment 16. Each compartment frame 11a constructing the concentrating compartment 15 has a concentrated water outlet 17. Each compartment frame 11b constructing the deionizing compartment 16 has a treated water outlet 18. In the pressure vessel 20, a concentrated water chamber 24 and a treated water chamber 25 are partitioned by a partition plate 23. Into the concentrated water chamber 24, the concentrated water flows from the concentrated water outlet 17 of the electric deionization stack 10. Into the treated water chamber 25, the treated water flows from the treated water outlet 18.