Calcium carbonate scale removal method and calcium carbonate scale removing agent

摘要

Calcium carbonate removal capacityCalcium carbonate scale can be removed while performing normal operation without stopping cooling water circulationProblem to be solved: to provide a method of efficiently removing calcium carbonate scale using a calcium carbonate scale removing agent of a cooling water system consisting of a polymer of carboxylic acid having high dissolution ability and handling good handling, and calcium carbonate scale removing agent.Composition consisting of a vinyl monomer having a carboxy groupA calcium carbonate scale removal method wherein a calcium carbonate scale removal agent comprising a polymer having a weight average molecular weight of 1000 to 10000 and / or a salt thereof is present in a water systemThe pH of the water system is 4.0 to 10.0.The water temperature is between 10 andCalcium carbonate scale removal method with calcium hardness of 50 to 500 mg / L.No selection