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Ken Ravon
Ken Ravon
Project Manager and construction coordinator
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Neutralization Calculations

Waste Water Neutralization Calculations_U S

Wastewater Neutralization Calculations – U.S. units
1. Caustic Addition – (pH is too low and must be raised)
Instructions: Enter values in blue boxes. Spreadsheet calculates values in yellow boxes
Inputs
Calculations

gmp

WW Flow Rate, Qww =

gal/day

Moles/L of OH– needed =

moles/L

Incoming pH, pHin =

NaOH rate needed =

moles/day

Desired pH, pHout =

Caustic solution rate =

lb/day

Caustic sol’n % NaOH =

Caustic solution rate =

gal/day

Caustic sol’n density, ρ =

lb/gal

Daily cost of caustic =

$/day

Caustic solution cost =

$/lb

pdate
reset
Print
Wastewater Neutralization Calculations – U.S. units
1. Caustic Addition – (pH is too low and must be raised)
Instructions: Enter values in blue boxes. Spreadsheet calculates values in yellow boxes
Inputs

gmp

WW Flow Rate, Qww =

gal/day

Incoming pH, pHin =

Desired pH, pHout =

Caustic sol’n % NaOH =

Caustic sol’n density, ρ =

lb/gal

Caustic solution cost =

$/lb

Calculations

Moles/L of OH– needed =

moles/L

NaOH rate needed =

moles/day

Caustic solution rate =

lb/day

Caustic solution rate =

gal/day

Daily cost of caustic =

$/day

pdate
reset
Print
Wastewater Neutralization Calculations – U.S. units
2. Acid Addition – (pH is too high and must be lowered)
Instructions: Enter values in blue boxes. Spreadsheet calculates values in yellow boxes
Inputs
Calculations

gmp

WW Flow Rate, Qww =

gal/day

Moles/L of H+ needed =

moles/L

Incoming pH, pHin =

H2SO4 rate needed =

moles/day

Desired pH, pHout =

Acid solution rate =

lb/day

Acid sol’n % H2SO4 =

Acid solution rate =

gal/day

Acid sol’n density, ρ =

lb/gal

Daily cost of acid =

$/day

Acid solution cost =

$/lb

pdate
reset
Print
Wastewater Neutralization Calculations – U.S. units
2. Acid Addition – (pH is too high and must be lowered)
Instructions: Enter values in blue boxes. Spreadsheet calculates values in yellow boxes
Inputs

gmp

WW Flow Rate, Qww =

gal/day

Incoming pH, pHin =

Desired pH, pHout =

Acid sol’n % H2SO4 =

Acid sol’n density, ρ =

lb/gal

Acid solution cost =

$/lb

Calculations

Moles/L of H+ needed =

moles/L

H2SO4 rate needed =

moles/day

Acid solution rate =

lb/day

Acid solution rate =

gal/day

Daily cost of acid =

$/day

pdate
reset
Print
Print