Q1.Design a trickling filter for treating 5 million litres of sewage per day. The B.O.D. of sewage is 144 ppm. Q2.Determine the ultimate B.O.D. for a sewage having 5-day B.O.D. at 20°C as 200 p.p.m. Assume R20 = 0.1 per day. Q3. Given the following data, calculate the 5-day B.O.D. of the unseeded sample of sewage: Initial DO…………….. 10 mg/1 Final DO…………… 4 mg/1 Bottle volume ………….300 ml Sample volume………….6 ml.
Q1.Design a trickling filter for treating 5 million litres of sewage per day. The B.O.D. of sewage is 144 ppm. Q2.Determine the ultimate B.O.D. for a sewage having 5-day B.O.D. at 20°C as 200 p.p.m. Assume R20 = 0.1 per day. Q3. Given the following data, calculate the 5-day B.O.D. of the unseeded sample of sewage: Initial DO…………….. 10 mg/1 Final DO…………… 4 mg/1 Bottle volume ………….300 ml Sample volume………….6 ml.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Q1.Design a trickling filter for treating 5 million litres of sewage per day. The B.O.D. of sewage is 144 ppm.
Q2.Determine the ultimate B.O.D. for a sewage having 5-day B.O.D. at 20°C as 200 p.p.m. Assume R20 = 0.1 per day.
Q3. Given the following data, calculate the 5-day B.O.D. of the unseeded sample of sewage:
Initial DO…………….. 10 mg/1
Final DO…………… 4 mg/1
Bottle volume ………….300 ml
Sample volume………….6 ml.
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