The use of Ca(OH)2 for ...
Published by Marco Rognoni, Owner at WET, Water Edge Technologies
The use of Ca(OH)2 for remineralization of desalinated fresh water is not inevitable. Actually I prefer other methods because the use of Ca(OH)2 gives problems in keeping the solution agitated before injection
a) injection of remineralizing salts (typically NaHCO3 and CaCl2 (both inexpensive and soluble in water to keep the water clear without turbidity)
b) addition of CO2 to the water and then filtration through a deep bed of CaCO3
The most diffused use of marble scraps is the filling of filtration drums for distillate remineralization (export from Italian marble mines).
Your problem of turbidity can be solved by either improving the mixing performance of the agitation before injection (no concentration peaks) or adding more CO2 to the water before processing (to dissolve the concentration peaks)