Determine the BOD5, BODU and k values.
A Polluted river sample is analyzed using standard BOD procedures .Data are obtained are listed below. Conclude the BOD5, BODU, and k values that best fit for the following data.
|
Dissolved oxygen, g/m3
|
|
Time, (days)
|
Dilution, ml/300mL
|
|
0
|
1
|
5
|
30
|
|
0
|
8.90
|
8.87
|
8.77
|
8.11
|
|
1
|
8.83
|
8.49
|
7.66
|
2.70
|
|
2
|
8.76
|
8.41
|
7.25
|
0
|
|
3
|
8.69
|
8.23
|
6.39
|
|
|
4
|
8.62
|
8.06
|
5.83
|
|
|
5
|
8.55
|
7.91
|
5.35
|
|
|
6
|
8.48
|
7.77
|
4.95
|
|
|
7
|
8.41
|
7.64
|
4.60
|
|