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Calculators

Plug in the variables and find the answers to common treatment formulas.

Calculate Plant Loading and Efficiency.
Enter the treatment plant Flow in MGD Flow

mgd

Formulas

MGD x 8.34 x ppm Influent = Total pounds entering plant

MGD x 8.34 x ppm Effluent = Total pounds leaving plant

Pounds entering plant - Pounds leaving plant = Pounds removed

Pounds entering plant - Pounds leaving plant / Pounds entering plant x 100 = % Removal efficiency

Enter treatment plant Influent Concentration in mg/l or PPM Influent

ppm
Enter Treatment plant Effluent Concentration in mg/l or PPM
 Effluent

ppm
 
   
Pounds coming into plant. Influent

Lbs.
Pounds leaving the plant
 Effluent

Lbs.
Pounds removed by the treatment plant. Removed

Lbs.
Percentage Removed Removal

Efficiency %

 

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Calculate Chlorine Demand.
Enter the treatment plant Flow in GPM Flow

gpm		 Formulas

Feed Rate / (GPM x .012) = Calculated Residual

Calculated Residual - Measured Residual = Chlorine Demand

Enter Feed Rate in lbs./day Feed Rate

lbs./day
Enter Measured Residual in ppm Measured Residual

ppm
 
   
Calculated Residual in ppm Calculated Residual

ppm
Chlorine Demand in ppm Chlorine Demand

ppm

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Calculate Specific Capacity
Enter the Static Level in feet Static Level

feet		 Formulas

Pumping Level-Static Level=Drawdown in feet

GPM/Drawdown=Specific Capacity in gpm per foot

Enter Pumping Level in feet Pumping Level

feet
Enter Well Yield in gpm Well Yield

gpm
 
   
Drawdown in feet Drawdown

feet
Specific Capacity in gpm/foot Specific Capacity

gpm/foot

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