The addition of chemicals and the clarification step in the drinking water treatment process are important control points. When optimised and monitored thoroughly, they increase the chance of producing safe drinking water.
The Practical Guide to the Optimisation of Chemical Dosing, Coagulation, Flocculation and Clarification has an introduction into the importance of good process management. There is a chapter on hazards, risks and control measures for managing drinking water from catchment to tap.
Usage of chemicals, quality assurance, jar testing and chemical dosing calculations are covered in dedicated chapters, as is operation of clarifiers. The Optimisation of coagulation, flocculation and clarification processes is covered in detail. Further to this there is an overview of softening processes, as well as chemical iron and manganese removal.