A surface water treatment plant operates round the clock with a flow rate of $35 \mathrm{~m} / \mathrm{min}$. The water temperature is $15^{\circ} \mathrm{C}$ and jar testing indicated an alum dosage of $25 \mathrm{mg} / 1$ with flocculation at a $G t$ value of $4 \times 10^{4}$ producing optimal results. The alum quantity required for 30 days (in $\mathrm{kg}$ ) of operation of the plant is

A surface water treatment plant operates round the clock with a flow rate of $35 \mathrm{~m} / \mathrm{min}$. The water temperature is $15^{\circ} \mathrm{C}$ and jar testing indicated an alum dosage of $25 \mathrm{mg} / 1$ with flocculation at a $G t$ value of $4 \times 10^{4}$ producing optimal results. The alum quantity required for 30 days (in $\mathrm{kg}$ ) of operation of the plant is

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