Treatment of water, especially water for aquaria

Details Treatment of water, especially water for aquaria Treatment of water, especially water for aquaria

1980-10-06

1983-05-17

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210688, C02F 142

Patent

active

043839240

ABSTRACT:
Treatment of water for selective and quantitative removal of all cations of the transition elements, with simultaneous adjustment of a definite mole ratio of calcium, magnesium, and the alkali metals, with a cation exchanger which, towards the ions of the I. transition elements, II. alkaline earth metals, III. alkali metals, shows a markedly gradually decreasing affinity from I. to III.; and which cation exchanger is loaded with calcium and magnesium ions in a predetermined mole ratio, or with hydrogen or sodium ions to obtain a water corresponding to the desired type of water in a vessel made of a water-resistant material and having at least one water-permeable wall.

REFERENCES:
patent: 2653089 (1953-09-01), Brooke
patent: 2749307 (1956-06-01), Ellison
patent: 3347211 (1967-10-01), Falkenberg et al.
patent: 3788982 (1974-01-01), Zsoldos et al.
Kunin, R., Ion Exchange Resins, N.Y., R. E. Krieger, 1972, pp. 113-114.

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