Sample Titration Parameters
Sample Name
Initial DO (Day 0)
9.0 mg/L
Final DO (Day 5)
3.2 mg/L
Dilution Factor (P)
Incubation Temp
Incubation Days
5 Days
Decomposition Rate (k₁ at 20°C)
0.23 /day
Dissolved Oxygen Depletion & BOD Dynamics
Calculated BOD₅
11.6 mg/L
Ultimate BOD (L₀)
17.0 mg/L
O₂ Solubility Limit (T)
9.09 mg/L
Water Quality Class
Class III
Class III: Moderately Polluted Water
This water sample exhibits moderate organic contamination. Micro-organisms consume significant dissolved oxygen over a 5-day period. Treatment recommendations: Aeration stabilization, biological filtration, or settling tanks prior to discharge.