FIELD: chemistry, technological processes.
SUBSTANCE: simultaneous processing of circulation water with ammonium salt of 1-oxyethylidendiphosphonic acid with 2-dimethylaminomethylphenol (salt "ОМЭД") and inorganic zinc salt. "ОМЭД" has formula 
. Concentration of "ОМЭД" salt in circulation water constitutes 0.5-3 mg/l in terms of ion Zn2+. As inorganic zinc salt zinc sulfate can be used.
EFFECT: simultaneous efficient protection of water circulation systems against corrosion and salt deposits.
3 cl, 2 tbl, 9 ex
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