This document discusses water treatment processes using coagulants and flocculants. It describes various coagulants like aluminum sulfate, iron sulfate, and iron chloride. It also discusses flocculants including activated silicon acid, polyacrylamide, and other synthetic polymers. It provides dosing guidelines for coagulants and flocculants based on suspended solids levels. Finally, it outlines different technological processes and units used for coagulation including settlers, filters, clarifiers, and sludge blanket clarifiers along with various reagent management units.