Succession metal as a treatment chemicals tracer

摘要

PURPOSE: To prevent the generation of the obstruction caused by the background from a liquid of a system or the substance contained in the liquid by controlling the supply amt. and capacity of treatment chemicals wherein a transition metal is compounded with a treatment compd. for industrial process water as a tracer. CONSTITUTION: A transition metal compd. is ions, cations, oxyanions or other related complex dissolved in a liquid system and contains no chromium (VI), mercury, lead or cadmium. In a pilot cooling tower, energy is taken out by the recirculated cooling water from the process side of a system held to high temp. for a heat exchanger 5. In order to keep this heat transfer efficiency, the energy is removed by the evaporative cooling of recirculated water in a cooling tower 10. A solid suspended and dissolved in cooling water 15 is conc. by the evaporation E of cooling water. This concn. ratio CR is calculated according to formula to be set to the standard of an increase in the level of dissolved and suspended substances to the system.