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Metering Pump Selector Calculator!
Gallons (or liters) per minute at point of chlorine injection:
Gallons Liters
Parts Per Million of Applied Chlorine Dosage:
ppm
  (from 0.2 to 200ppm)
Concentration of bleach you will be using:
%  
 (from 1% to 12.5%)
How many gallons or liters per day of bleach you would use:
Gallons
Liters
Help >> Chlorination Work Sheet

Chlorination Work Sheet

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System Info
Gallons (or liters) per minute at point of chlorine injection: Gallons Liters
Applied chlorine dosage in parts per million:
Pressure at point of injection in psi:
Is flow rate variable? yes no
Estimated contact time in minutes:
Water temperature estimated: Fahrenheit Celsius
pH: Iron PPM: Manganese PPM: Odor? Coliform? Fecal coliform?
Helpful Information
GPM = Gallons per minute at point of chlorine injection
RESIDUAL = amount of chlorine remaining after contact with water and its impurities. A residual of .2 -.6 PPM should remain after chlorination at point of use.
CONTACT TIME - the time required for chlorine contact to perform disinfection.
APPLIED CHLORINE DOSAGE = desired chlorine feed rate for water conditions. See chart below.
Water Temperature 50 Degrees F Water Temperature 32 to 40 Degrees F
Contact time in munutes Necessary chlorine residual (ppm) Contact time in munutes Necessary chlorine residual (ppm)
pH 7 pH 7.5 pH 8 pH 7 pH 7.5 pH 8
40 0.3 0.5 0.6 40 0.2 0.3 0.4
30 0.4 0.6 0.8 30 0.3 0.4 0.5
20 0.6 0.9 1.2 20 0.4 0.6 0.8
10 1.2 1.8 2.4 10 0.8 1.2 1.6
5 2.4 3.6 4.8 5 1.6 2.4 3.2
2 6.0 9.0 12.0 2 4.0 6.0 8.0
1 6.0 18.0 24.0 1 8.0 12.0 16.0
Metering Pump Selection
Select metering pump by taking total gallons or liters used per day (meaning 24 hours of well pump run time), and selecting a metering pump that most closely matches this requirement. For instance, if 2.4 gallons of chloirne are needed per day, select a 10 gallon per day pump. Then set the pump at 24% of rated pump by adjusting the speed and/or stroke settings on the pump.
Impurities Affecting Chlorine Demand
IRON: Apply 1 ppm chlorine for each 1.0 ppm iron
MANGANESE: Apply 1.7 to 2.0 ppm chlorine for each 1 ppm manganese.
HYDROGEN SULFIDE: Apply 2.0 ppm chlorine for each 1 ppm hydrogen sulfide.
OTHER factors that can affect chlorine demand: color, sediment, turbidity, oil to name a few.
Variable Flow Rates
Note: if the water stream into which the chlorine is being injected varies, determine the maximum flow rate, and use a proportionally fed chlorination system.
Chlorine Bleach (sodium hypochlorite)
Household bleach = 5 1/4% 52,500 PPM
Pool chlorine = 12% or 120,000 PPM
Pool chlorine dilutions:
Diluted 1 part chlorine to 9 parts water: 12,000
Diluted 1 part chlorine to 18 parts water: 6,000
Note: use soft or purified water when diluting chlorine bleach.
How many gallons or liters per day of bleach you would use:
Type the calculation result from the calculator in the left of this page:
Gallons Liters
Please tell us background information or notes here:
Disclaimer:
The information contained here is believed to be reliable and offered in good faith with no warranties or implied warranties or fitness for a particular use. System design suggestions are based on best judgement or estimates considering limited information provided by customer; End-user or the customer is responsible for determining suitability of application and usage under site-specific circumstances, environmental conditions and water quality profile. The customer is responsible for determining that Information in this document is appropriate for the specific application, and ensuring compliance with applicable laws and regulations. Installation by a qualified mechanical contractor / plumber, and ongoing sampling and monitoring protocol is required for all installations to determine actual performance and the appropriate frequency of service. Advanced Water Systems Inc. neither accepts or assumes any liability associated with water treatment system design. No warranty or guarantees are extended to cover piping systems, appliances or other water using fixtures. I agree to hold harmless Advanced Water Systems Inc for any information contained herein and take full responsibility for my own water systems and applications.
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