To determine the BOD5 of a waste water sample, 5, 10 and 50 ml aliquots of the waste water were diluted to 300 ml and incubated at 20°C in BOD bottles for 5 days. Sl. No. Waste water Initial DO, volume mg/l 5 9.2 10 9.1 50 8.4 Based on the data, the average BOD5 of the wastewater is equal to 1. 2. 3. DO after 5 days, mg/l 6.9 4.4 0.0

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Solid wastes.

To determine the BOD5 of a waste water sample, 5, 10 and 50 ml aliquots of the
waste water were diluted to 300 ml and incubated at 20°C in BOD bottles for 5
days.
Sl. No. Waste water Initial DO,
volume
mg//
5
9.2
10
9.1
50
8.4
Based on the data, the average BOD, of the wastewater is equal to
1.
2.
3.
DO after
5 days, mg//
6.9
4.4
0.0
Transcribed Image Text:To determine the BOD5 of a waste water sample, 5, 10 and 50 ml aliquots of the waste water were diluted to 300 ml and incubated at 20°C in BOD bottles for 5 days. Sl. No. Waste water Initial DO, volume mg// 5 9.2 10 9.1 50 8.4 Based on the data, the average BOD, of the wastewater is equal to 1. 2. 3. DO after 5 days, mg// 6.9 4.4 0.0
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