Scale formation in desalination systems is a kinetically controlled multistage process. Available
antiscalants reduce scaling tremendously. Recent works have partly revealed the fundamental
mechanisms of scale formation and the effect of antiscalants on the induction time.
Nevertheless scaling phenomena are still difficult to predict because they are the emergent
result of the kinetic interactions of a supersaturated solution, nucleation of different kinds of
crystals, their growth and agglomeration. Antiscalants interact with all of these processes. This
paper gives an overview of the way antiscalants work in a calcium carbonate system.