b.o.d equation? 1

[osama800]

hi friends:

is there any one can help me and give the equation i must used to calculate b.o.d in the waste water systems ?

thank u in advanse for any help
best regards.

 

[orenda1168]

BOD is not calculated by equation...it is determined by standardized laboratory procedures available from any decently equipped water analytical laboratory.


Orenda

 

[cfj104]

BOD is typically calculated over a 5-day period (BOD5)

This is the simple calculation:

BOD5 = (DOi - DOf)/P

DOi = Initial dissolved oxygen
DOf = Finial dissolved oxygen
P = dilution factor = volume of wastewater/(volume of wastewater + dilution water)

I would imagine a laboratory would use a seeded test to make sure there is an adequate bacterial population to carry out the biodegradation.