Why BOD5 curve (using Hach Trak II) showed a significant incease after around 2.5 days?

Hi everyone, When I tried to measure the BOD of treated wastewater with Fenton processes, the BOD5 curve (using Hach Trak II) just showed a significant increase after ~2.5 days. This significant...

10 April 2018 2,874 3 View