CIVIL SNAPS – ENVIRONMENTAL ENGINEERING

CIVIL SNAPS –Β ENVIRONMENTAL ENGINEERING

 

Biochemical Oxygen Demand

 

  • It is the oxygen required for biological decomposition of organic matter present in sewage
  • BOD test is conducted for 5 days or 10 days. The result after 5 days is about 68% and after 10 days is about 90% of the final result
  • Test for BOD – Direct test and Dilution test
  • Dilution test is most common
  • After 5 days, BOD = Loss of oxygen x Dilution Ratio

 

CIVIL SNAPS – ENVIRONMENTAL ENGINEERING

 

 

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