Chemical Metering Pump Feed Rate Calculator

Chemical Metering Pump Feed Rate Calculator

Formula:

GPH = (GPM x .006 x PPM) /  % Concentration x S.G.

Where,

• GPM = flow to be treated.
• .006 = Constant.
• PPM = Dosage required.
• % Concentration = Concentration of chemical in pumped solution
• Use full number (15% solution is [15] in formula not (.15)).
• S.G. = Specific gravity at pumped solution. 

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GPM :	m3/h
PPM Dosage :	mg/l
Concentration of Chemical:	%
Specific Gravity at Pumped Solution:
Gallons Per Hour (GPH)

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Example:

2% solution is required for pumping a 55 gallon feed tank is in use and 12% chemical is available.

 55 x 2
 -------- = 9.17 gal. chemical to 45.83 gal. water in tank
    12

Related Calculators:

• Chlorine Dosage Calculator

• Backwash Water Calculator

Chlorine Dosage Calculator - Rate of Dose, Demand, Water Residual Values

About This Tool:

Calculate rate of dose, demand and residual values in a water using this free chlorine dosage calculator tool.

Formula:  

Chlorine Dosage (mg/L) = Demand (mg/L) + Residual (mg/L)

Note : Type any two known values for calculation

Chlorine Dosage Calculator

Enter the Residual Value :	mg/L
Enter the Demand Value :	mg/L
Enter the Dose Value :	mg/L

Example 1: What is the chlorine dose, if the chlorine demand is 4.8 mg/L and the chlorine residual is 2 mg/L?

Dose (mg/L) = Demand (mg/L) + Residual (mg/L)

= 4.8 mg/L + 2 mg/L
= 6.8 mg/L

Example 2: What is the chlorine demand in milligrams per liter if the chlorine dose is 3.2 mg/L and the residual is 0.3 mg/L?

Demand (mg/L) = Dose (mg/L) – Residual (mg/L)

= 3.2 mg/L - 0.3 mg/L
= 2.9 mg/L

Example 3: What is the chlorine residual, if the chlorine demand is 1.8 mg/L and the chlorine dose is 10 mg/L?

Residual (mg/L) = Dose (mg/L) – Demand (mg/L)

= 10 mg/L – 1.8 mg/L
= 8.2 mg/L

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