A water treatment plant is designed to treat $1 \mathrm{~m}^{3} / \mathrm{s}$ of raw water. It has 14 sand filters. Surface area of each filter is $50 \mathrm{~m}^{2}$. What is the loading rate (in $\frac{m^{3}}{\text { day } \cdot \mathrm{m}^{2}}$ ) with two filters out of service for routine backwashing?

A water treatment plant is designed to treat $1 \mathrm{~m}^{3} / \mathrm{s}$ of raw water. It has 14 sand filters. Surface area of each filter is $50 \mathrm{~m}^{2}$. What is the loading rate (in $\frac{m^{3}}{\text { day } \cdot \mathrm{m}^{2}}$ ) with two filters out of service for routine backwashing?

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