8.29 A BOD test was conducted on a raw domestic wastewater sample. The wastewater portion added to each 300-ml test bottle was 8.0 ml. The dissolved-oxygen values and incubation periods are listed below. Plot a BOD-versus-time curve and determine the 5-day BOD value. Bottle Initial DO Incubation Final DO DO Drop Number (mg/l) Period (days) (mg/l) (mg/l) Calculated BOD (mg/l) 1 8.4 0 8.4 2 8.4 0 8.4 8.4 1.0 6.2 8.4 1.0 5.9 10 567890 8.4 2.0 5.2 8.4 2.0 5.2 8.4 3.0 4.4 8.4 3.0 4.6 8.4 5.0 3.8 8.4 5.0 3.5
8.29 A BOD test was conducted on a raw domestic wastewater sample. The wastewater portion added to each 300-ml test bottle was 8.0 ml. The dissolved-oxygen values and incubation periods are listed below. Plot a BOD-versus-time curve and determine the 5-day BOD value. Bottle Initial DO Incubation Final DO DO Drop Number (mg/l) Period (days) (mg/l) (mg/l) Calculated BOD (mg/l) 1 8.4 0 8.4 2 8.4 0 8.4 8.4 1.0 6.2 8.4 1.0 5.9 10 567890 8.4 2.0 5.2 8.4 2.0 5.2 8.4 3.0 4.4 8.4 3.0 4.6 8.4 5.0 3.8 8.4 5.0 3.5
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
A BOD test was conducted on a raw domestic wastewater sample. The wastewater portion added to each 300- ml test bottle was 8.0 ml. The dissolved – oxygen values and incubation periods are listed below. Plot a BOD- versus time curve and determine the 5-day BOD value.
Transcribed Image Text:8.29 A BOD test was conducted on a raw domestic wastewater sample. The wastewater portion
added to each 300-ml test bottle was 8.0 ml. The dissolved-oxygen values and incubation
periods are listed below. Plot a BOD-versus-time curve and determine the 5-day BOD
value.
Bottle
Initial DO
Incubation
Final DO
DO Drop
Number
(mg/l)
Period (days)
(mg/l)
(mg/l)
Calculated
BOD (mg/l)
1
8.4
0
8.4
2
8.4
0
8.4
8.4
1.0
6.2
8.4
1.0
5.9
10
567890
8.4
2.0
5.2
8.4
2.0
5.2
8.4
3.0
4.4
8.4
3.0
4.6
8.4
5.0
3.8
8.4
5.0
3.5
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