You are the county environmental manager for Union County and you have a problem with a pond located in Warinanco Park in Roselle, NJ$.$ There are several signs of Eutrophia in the pond. The Pond has a surface area of $15,000$ m$2$ and an average depth of $1\mathrm{.}5$ meters. The average flow of water into the pond is $10$ m$3/$min and the average Phosphorus load from the contributing watershed is $0\mathrm{.}5$ kg$/$day$.$ The solid P $/$ dissolved P ratio $(\backslash$alpha $)$ is $0\mathrm{.}6$ and the average settling velocity for particles in this pond is $0\mathrm{.}5$ m$/$day$.$ A brand new dissolved Phosphorus treatment is brought to your attention. It is a chemical sequestration product that can absorb dissolved Phosphorus so that for each gram of absorbent can sequester $1$ gram of Phosphorus $($essentially eliminating it from the system$).$ How much absorbent should I dose this pond with each day $($grams$/$day$)$ to achieve a steady state, Mesotrophic pond $($use a final concentration of $18$ ug$/$L of total Phosphorus in the pond$).$ Note: Absorption is a zero order process and settling still occurs. $($Hint: you need to adjust the mass balance for this nutrient problem, start with the mass balance presented in class in the nutrient modeling Lecture $10$ on the canvas site.$)$

Answer: $0\mathrm{.}16$ kg$/$day

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