The liquid effluent from an industry contains glutamic acid, $C_5{H}_9{O}_{4}N.$ The concentration

is $1,5K\frac{g}{m^3}$ and the effluent flow rate is $300\frac{m^3}{d}.$

a$)$ What is the total oxygen demand of the effluent? $($Response in grams of $O\frac{2}{?}$ liter$)$

b$)$ How much oxygen should be added per day to the biological treatment plant assuming that

$70\%$ of the organic matter in the effluent is oxidized and that the plant does not nitrify?

$($Response in grams of O$2/$Day$)$

c$)$ How much oxygen should be added per day to the biological treatment plant assuming that

$90\%$ of the organic matter in the effluent is oxidized and that the plant nitrifies? $($Response in

grams of O$2/$Day$)$

Use on oxygen demand:

Total demand $=$ Organic carbonaceous demand $+$ Nitrogen demand