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The Sludge Volume Index for mixed liquor having suspended solids concentration of 2000 mg/l and showing a settled volume of 200 ml from a one-litre sample would be
- a)0.1
- b)1000
- c)100
- d)10
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The Sludge Volume Index for mixed liquor having suspended solids conc...
The sludge volume index (SVI) is the volume in millilitres occupied by 1 g of a suspension after 30 min settling.
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S.V.I = 200 ml/2000 mg
= 200 ml/2 gm = 100 ml/gm
Most Upvoted Answer
The Sludge Volume Index for mixed liquor having suspended solids conc...
Sludge Volume Index (SVI) is a measure of the settling characteristics of activated sludge. It is used to determine the settling ability of sludge and to assess the performance of a wastewater treatment plant.
The formula to calculate SVI is:
SVI = (Settled Volume in mL) / (MLSS in mg/L)
Given:
Suspended solids concentration (MLSS) = 2000 mg/L
Settled volume = 200 mL
To calculate SVI, we can substitute the given values in the formula:
SVI = 200 mL / 2000 mg/L
Simplifying the equation, we get:
SVI = 0.1
Therefore, the correct answer is option 'C' (SVI = 0.1).
Explanation:
The SVI indicates the volume occupied by 1 gram of activated sludge after settling. A lower SVI value indicates better settling characteristics and a higher concentration of solids in the sludge. Conversely, a higher SVI value indicates poor settling characteristics and a lower concentration of solids.
In this case, the suspended solids concentration (MLSS) is 2000 mg/L, which means that there are 2000 mg of solids in 1 liter of mixed liquor. The settled volume is 200 mL, which means that the sludge occupies a volume of 200 mL after settling.
By dividing the settled volume (200 mL) by the suspended solids concentration (2000 mg/L), we can determine the SVI. In this case, the SVI is calculated as 0.1.
This means that for every gram of activated sludge in the sample, it occupies a volume of 0.1 mL after settling. This indicates good settling characteristics and a high concentration of solids in the sludge.
Therefore, the correct answer is option 'C' (SVI = 0.1).
The formula to calculate SVI is:
SVI = (Settled Volume in mL) / (MLSS in mg/L)
Given:
Suspended solids concentration (MLSS) = 2000 mg/L
Settled volume = 200 mL
To calculate SVI, we can substitute the given values in the formula:
SVI = 200 mL / 2000 mg/L
Simplifying the equation, we get:
SVI = 0.1
Therefore, the correct answer is option 'C' (SVI = 0.1).
Explanation:
The SVI indicates the volume occupied by 1 gram of activated sludge after settling. A lower SVI value indicates better settling characteristics and a higher concentration of solids in the sludge. Conversely, a higher SVI value indicates poor settling characteristics and a lower concentration of solids.
In this case, the suspended solids concentration (MLSS) is 2000 mg/L, which means that there are 2000 mg of solids in 1 liter of mixed liquor. The settled volume is 200 mL, which means that the sludge occupies a volume of 200 mL after settling.
By dividing the settled volume (200 mL) by the suspended solids concentration (2000 mg/L), we can determine the SVI. In this case, the SVI is calculated as 0.1.
This means that for every gram of activated sludge in the sample, it occupies a volume of 0.1 mL after settling. This indicates good settling characteristics and a high concentration of solids in the sludge.
Therefore, the correct answer is option 'C' (SVI = 0.1).
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The Sludge Volume Index for mixed liquor having suspended solids concentration of 2000 mg/l and showing a settled volume of 200 ml from a one-litre sample would bea)0.1b)1000c)100d)10Correct answer is option 'C'. Can you explain this answer?
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