Environmental Engineering
The water carriage system of collection of waste product

Is cheaper in initial cost than dry conservancy system
All of these
Creates hygienic problem
Requires treatment before disposal

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Environmental Engineering
Sludge volume index is defined as the ratio of

Percentage of total solids by weight to percentage of sludge by volume
Percentage of sludge by volume to percentage of suspended solids by weight
Percentage of suspended solids by weight to percentage of sludge by volume
Percentage of sludge by volume to percentage of total solids by weight

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