COMPOSITIONS FOR INHIBITING SALT FORMATION, CORROSION AND WASHING OF EQUIPMENT IN RECYCLED WATER SUPPLY SYSTEMS Russian patent published in 2003 - IPC

FIELD: compositions for inhibiting carbonate, sulfate and iron oxide depositions in recycled water supply systems and for washing heat-exchanging equipment from salt deposits. SUBSTANCE: composition comprises following components used in the following ratio, wt%: oxyethylidenediphosphonic acid 5-12; commercial sodium polyphosphate 5-12; sodium lignosulfonate 5-12; alkyl dimethylamine oxide 8-16; and water the balance. EFFECT: increased efficiency in removing depositions from surfaces of heat-exchanging equipment and preventing salt and other substances from depositing on said surfaces and improved operation of water supplying systems. 1 tbl