Chemical Coagulant Dosage & Jar Test Sizing Calculator

Determine coagulant chemical feed rates (Alum, Ferric Chloride, PACl), stoichiometric alkalinity consumption as $\text{CaCO}_3$, and dry chemical sludge production.

Plant Flow & Chemical Selection

Primary Coagulant Chemical:

Water Flow Q (m³/day):

Jar Test Optimum Dose (mg/L):

Raw Water Alkalinity (mg/L as CaCO₃):

Raw Water Turbidity (NTU):

Feed Solution Concentration (% by wt): Commercial liquid alum ~48.5%, FeCl3 ~40%, Dry powder = 100%

Chemical Consumption & Alkalinity Balance

Daily Pure Coagulant Mass

Alkalinity Consumed

Liquid Metering Pump

Dry Sludge Production

Lime/Soda Ash Need

Coagulation Chemistry & pH Buffering

Alkalinity consumption stoichiometric factor: 0.50 mg CaCO₃ per mg Alum

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Chemical Coagulant Dosage & Jar Test Sizing Calculator

Plant Flow & Chemical Selection

Chemical Consumption & Alkalinity Balance

Frequently Asked Questions