1. A waste has an ultimate CBOD of 1,000 mg/L and a kL, of 0.1 day-1. What is its 5-day CBOD?
2. Calculate the ultimate BOD of a waste that has a measured 5-day BOD of 20 mg/L, assuming a BOD rate coefficient of 0.15 day-1.
3. A waste has a ThOD of 500 mg/L, a COD of 48 mg/L, and an ultimate CBOD of 5 mg/L Offer an explanation for the character of this waste.