Kesadahan : Analisa dan Permasalahannya untuk Air Industri

Abstract

Hardness is represent the nature of water which because of existence of divalence metal cation. One of the cations the root cause from hardness is Ca2+. Calcium in water to form salt with bicarbonate or carbonate. If boiled bicarbonate turn into carbonate with have a small of condensation value.That’s why hardness by bicarbonate/carbonate could be losted with warm-up. Excess of calcium could be form scale at pipeline, it cause of calcium carbonate (CaCO3) so make the production of oil by PT.Chevron Indonesia decrease, and if CaCO3 too lowcan cause corrotion at the pipeline well production with higg temperature. Therefore hardness of water have to be optimum.