How to determine the needed surface area of the secondary clarifier tank given that the flow is 40,000 m3 per day and the recycling ratio is 0.5 . The necessary solids concentration in the underflow is 13,000 mg/L, while the Mixed liquor suspended solids concentration in the activated sludge is 4,500 mg/L. Hint: Plot SFg= CiVi then Use SFL equation to get the area The table below shows the settling properties of sludge: Mixed liquor suspended solids Mg/l Settling velocity m/hr 2000 6 4000 3 6000 1 8000 0.2 10000 0.1 13000 0.1
How to determine the needed surface area of the secondary clarifier tank given that the flow is 40,000 m3 per day and the recycling ratio is 0.5 . The necessary solids concentration in the underflow is 13,000 mg/L, while the Mixed liquor suspended solids concentration in the activated sludge is 4,500 mg/L. Hint: Plot SFg= CiVi then Use SFL equation to get the area The table below shows the settling properties of sludge: Mixed liquor suspended solids Mg/l Settling velocity m/hr 2000 6 4000 3 6000 1 8000 0.2 10000 0.1 13000 0.1
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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How to determine the needed surface area of the secondary clarifier tank given that the flow is 40,000 m3 per day and the recycling ratio is 0.5 . The necessary solids concentration in the underflow is 13,000 mg/L, while the Mixed liquor suspended solids concentration in the activated sludge is 4,500 mg/L.
Hint: Plot SFg= CiVi then Use SFL equation to get the area
The table below shows the settling properties of sludge:
|
Mixed liquor suspended solids Mg/l |
Settling velocity m/hr |
|
2000 |
6 |
|
4000 |
3 |
|
6000 |
1 |
|
8000 |
0.2 |
|
10000 |
0.1 |
|
13000 |
0.1 |
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