High calcium tolerant deposit control method

Details High calcium tolerant deposit control method High calcium tolerant deposit control method

1982-10-28

1984-10-30

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

252180, C02F 514

Patent

active

044798784

ABSTRACT:
A method of controlling deposition of scale and the like in waters having a high calcium ion content is disclosed. The method is applicable to waters having a calcium ion concentration of about 300 ppm Ca.sup.+2 and comprises adding 1-hydroxypropylidene-1,1 diphosphonic acid or water soluble salt thereto. This particular compound is capable of performing the deposit control function in such high calcium waters without itself resulting in substantial deposit control agent-calcium adduct formation which would deleteriously affect the deposit control function.

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