Biochemical Oxygen Demand Equation Calculator

Water Wastewater Sewage Treatment Formulas

Solving For Biochemical Oxygen Demand.

Biochemical Oxygen Demand


ultimate BOD (L)
deoxygenation rate constant (k)
time (t)


ultimate BOD (L)
= 0
= 0
deoxygenation rate constant (k)
= 0
= 0
time (t)
= 0
= 0


biochemical oxygen demand (BODt)

Other Units:

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Select to solve for a different unknown
biochemical oxygen demandSolve for biochemical oxygen demand
ultimate biochemical oxygen demandSolve for ultimate biochemical oxygen demand
deoxygenation rate constantSolve for deoxygenation rate constant
timeSolve for time
seeded biochemical oxygen demandSolve for seeded biochemical oxygen demand
seeded biochemical oxygen demandSolve for seeded biochemical oxygen demand
BOD=biochemical oxygen demand
L=ultimate biological demand
k=deoxygenation rate constant
D1=initial diluted seeded wastewater dissolved oxygen
D2=final diluted seeded wastewater dissolved oxygen
B1=initial diluted seed sample DO
B2=final diluted seed sample DO
f=seed volume ratio
P=wastewater decimal fraction

References - Books:
Warren Viessman, Jr, Mark J. Hammer. 1993. Water Supply and Pollution Control. Harper Collins College Publishers. 5th ed.
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