water quality and treatment american water in america
04/27/16 water treatment 15 Jar Tests Determination of optimum pH The jar test – a laboratory procedure to determine the optimum pH and the optimum coagulant dose A jar test simulates the coagulation and flocculation processes Fill the jars with raw water sample (500 or 1000 mL) – usually 6 jars Adjust pH of the jars while mixing using H2SO4 or NaOH/lime (pH: 5.0; 5.5; 6.0; 6.5; 7.0; 7.5) Add same dose of the selected coagulant (alum or iron) to each jar (Coagulant dose: 5 or 10 mg/L
water treatment part 2 coagulation.ppt. Treatment Processes. Screening Aeration Prechlorination Sedimentation Flocculation Coagulation. Coagulation and Flocculation. Coagulation and flocculationconsist of adding a floc- forming chemical reagent to a water to enmesh or combine with nonsettleable colloidal solids and slow- settling suspended solids to produce a rapid-settling floc. The floc is subsequently removed in most cases by.
