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EPA Biennial Report

EPA Biennial Report

To inform the public, Federal, State, and local government officials about the onsite management of hazardous waste and to provide verification of the “cradle-to-grave” disposition of hazardous waste, all hazardous waste generators, and handlers who held an active EPA identification number are required to report their activities.

For more information and possible changes to this regulation visit Department of Toxic Substances Control if your business is located in California. The 2007 Biannual reporting requirement document and its changes form 2005 can be found at the 2007 Biennial Hazardous Waste Report.

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Waste Water Neutralization Calculations_U S

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

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

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

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