Use of phosphate silicate corrosion inhibitor in the treatment of make-up water for full internal hot water recirculation systems of apartment buildings in St. Petersburg
The paper presents the results of technological research on the use of phosphate-silicate corrosion inhibitor for processing the make-up water of a full internal hot water recirculation system of apartment buildings in St. Petersburg. The inhibitor stops the process of corrosion of the inner surface of pipelines and protects them from deposits. With continuous dosing of this inhibitor at a dose of 15-20 mg/dm3 after 1-3 months from the beginning of its use, the quality of hot water according to organoleptic indicators, the content of total iron and zinc meets the current regulatory requirements. A break in the dosing of the inhibitor for up to one month and no more than five months does not lead to the deterioration in the quality of hot water.