A seeded BOD analysis was carried out about a high strength food processing wastewater. 20 ml portions were used in setting up the 300 ml bottles of aged, settled wastewater seed. The seeded sample bottles contained 1.0 ml of industrial waste and 2.0 ml of seed material. The results of these series of tests are given in Table Q3.1 below: Table Q3.1: Results of the BOD test. Calculate: (i) Time (days) 0 1 1.9 2.9 3.8 4.7 6 7.9 9.8 11.8 14 15.6 19 Seed Only Bottle D.O. (Mg/L) 8.2 BOD5 of the waste, and 7.3 6.5 5.9 5.5 5.1 4.8 4.5 4.1 3.9 3.4 3.6 3.8 Sample & Seed Bottle D.O. (mg/L) 8.2 7.2 6.4 5.8 5.3 5.0 4.6 4.1 3.8 3.5 2.9 2.7 2.1
A seeded BOD analysis was carried out about a high strength food processing wastewater. 20 ml portions were used in setting up the 300 ml bottles of aged, settled wastewater seed. The seeded sample bottles contained 1.0 ml of industrial waste and 2.0 ml of seed material. The results of these series of tests are given in Table Q3.1 below: Table Q3.1: Results of the BOD test. Calculate: (i) Time (days) 0 1 1.9 2.9 3.8 4.7 6 7.9 9.8 11.8 14 15.6 19 Seed Only Bottle D.O. (Mg/L) 8.2 BOD5 of the waste, and 7.3 6.5 5.9 5.5 5.1 4.8 4.5 4.1 3.9 3.4 3.6 3.8 Sample & Seed Bottle D.O. (mg/L) 8.2 7.2 6.4 5.8 5.3 5.0 4.6 4.1 3.8 3.5 2.9 2.7 2.1
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:3 Water
A seeded BOD analysis was carried out about a high strength food processing wastewater.
20 ml portions were used in setting up the 300 ml bottles of aged, settled wastewater seed.
The seeded sample bottles contained 1.0 ml of industrial waste and 2.0 ml of seed
material. The results of these series of tests are given in Table Q3.1 below:
Table Q3.1: Results of the BOD test.
Calculate:
(i)
Time
(days)
0
1
1.9
2.9
3.8
4.7
6
7.9
9.8
11.8
14
15.6
19
Seed Only Bottle
D.O.
(Mg/L)
8.2
BOD5 of the waste, and
7.3
6.5
5.9
5.5
5.1
4.8
4.5
4.1
3.9
3.4
3.6
3.8
Sample & Seed Bottle
D.O.
(mg/L)
8.2
7.2
6.4
5.8
5.3
5.0
4.6
4.1
3.8
3.5
2.9
2.7
2.1
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