Performance of a Newly Green Water Treatment Agent for Central Air Conditioner

Static scale inhibition method and rotary coupon tests were used to obtain a kind of green agent, which is suitable for central air conditioner circulating cooling water treatment. Scanning electron microscopy (SEM) was used to observe the morphology of the scale samples, and electrochemical method was used to analyze the corrosion inhibition mechanism of the compound agent. Results show that the best ratio of the compound (PESA, PAAS, BTA, SDBS) was 8:2:5:25, and the optimal dosage was 80 mg/L. At this proportion, the scale inhibition rate was more than 90%, while the corrosion inhibition rate of A3 carbon steel and T2 red copper reached 91.13% and 88.61%, respectively.