1) Refiners 
A unit that removes solids for clarification of the raw river water. It is aided by injecting polyelectrolyte and ferric for coagulation, caustic for stabilization of pH, and chlorine for removal of bacteria. Sludge is discharged and clear effluent sent on through the water plant.
Additives used in resins to improve the transparency or translucency of the finished plastic extrusion profiles and other plastic products.