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Sludge volume index is defined as the ratio of | |
A. | percentage of sludge by volume to percentage of suspended solids by weight [Correct Answer] |
B. | percentage of sludge by volume to percentage of total solids by weight [Wrong Answer] |
C. | percentage of suspended solids by weight to percentage of sludge by volume [Wrong Answer] |
D. | percentage of total solids by weight to percentage of sludge by volume [Wrong Answer] |