Question
Download Solution PDFSelf-cleansing velocity is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Self-Cleansing Velocity
Self-cleansing velocity is the minimum velocity of water flow required in drains or sewers to prevent the accumulation of solids and debris. This velocity ensures that no sedimentation remains in the drainage system, maintaining its efficiency and reducing the risk of blockages.
Analyzing the Given Options
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"Velocity at dry weather flow." (Incorrect)
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Dry weather flow velocity may not necessarily be sufficient to prevent sediment accumulation.
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It is typically lower than the required self-cleansing velocity.
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"Velocity of water at flushing." (Incorrect)
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Flushing velocity is higher than self-cleansing velocity and is used for cleaning drains periodically.
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It is not a continuous velocity required for regular operations.
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"Velocity at which no accumulation remains in the drains." (Correct)
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This is the definition of self-cleansing velocity.
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It ensures that solids and debris are continuously removed from the drainage system.
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"Velocity of water in pressure filter." (Incorrect)
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Velocity in pressure filters is related to filtration processes, not drainage systems.
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It does not play any role in preventing accumulation in drains.
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