Process for producing fully desalted process water

Details Process for producing fully desalted process water Process for producing fully desalted process water

1980-05-02

1982-03-23

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210664, 210685, C02F 142

Patent

active

043211445

ABSTRACT:
Process for producing fully desalted process water by the treatment of raw water with cation and anion exchangers in a separate multi-stage arrangement. The water which leaves the main cation exchanger stage or stages, has a residual sodium content of less than 0.5 mg Na/l before entering the anion exchange stage. Such water is fed through a strong acid cation exchanger stage, in which the exchanger material is present at a maximum of 50 percent as a suspended bed and the remainder as a solid bed. The exchanger material in the strong acid cation exchanger stage following the first strong acid cation exchanger stage, is present at a maximum of 25 percent as a suspended bed and the remainder as a solid bed.

REFERENCES:
patent: 3197401 (1965-07-01), Arai
patent: 3458436 (1969-07-01), Martinola et al.
patent: 3618589 (1971-11-01), Tavani
patent: 3711401 (1973-01-01), Hamilton et al.
patent: 3985648 (1976-10-01), Casolo

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