سوالات چهار گزینه محیط زیست 3

[farshid]

[LEFT]

3

If the BOD5 of wastewater is 150 mg/l at 20C the rate constant value is K = 0.23 day-1
The Ultimate BOD will be:

a. 102.5 mg/l
b. 473.7 mg/l
c. 219.5 mg/l
d. 47.5 mg/l[/LEFT]