1.1. You decide to dump two liters of milk every day into the stream near N1 road to VUT residence. What would be the kg BOD5/d if milk has 20,000 mg/L? (3)
1.2. After decomposing C24H34N2O of 0.007 molar, what amount of theoretical demand in mg O2/L was used? (5)
1.3. If 300 mg/L of C24H34N2O is to be decomposed, what will be the total concentration in mg O2/L and what will be the volume of air in L/L solution? (15)
1.4. After realizing that water from VUT has more than 3000 mg/L hardness, Mrs. Corne Brink has employed you as a consultant to solve this problem.
a. How is this 3000 mg/L water classified? (2)
b. Will there be any problem that VUT will encounter if they continue using this water? What are the 4 problems that might result from using this water specifically at VUT, including residences? (6)
c. How will you solve this problem (what process will you use, describe the process in detail, indicate 3 (three) benefits of the process you have chosen)? (12)