Casein (C8H12O3N2) at a concentration of 200 mg/L is found in a wastewater sample. Casein can be oxidized according to the following reactions.

C8H12O3N2 + 8O2 8CO2 + 3H2O + 2NH3

NH3 + 2O2NO3- + H+ + H2O

Calculate the following (in mg/L): (15 points)

(a) Theoretical CBOD

(b) Theoretical NBOD

(c) Total theoretical BOD

(d) Assuming that none of the NBOD is exerted in the first five days and with k = 0.25/day, calculate the BOD5.

Casein (C8H12O3N2) at a concentration of 200mg/L is found in a wastewater sample. Casein can be oxidized according to the following reactions. C8H12O3N2+8O28CO2+3H2O+2NH3 NH3+2O2NO3+H++H2O Calculate the following (in mg/L) : (15 points) (a) Theoretical CBOD (b) Theoretical NBOD (c) Total theoretical BOD (d) Assuming that none of the NBOD is exerted in the first five days and with k=0.25/ day, calculate the BOD5