A wastewater treatment plant has a sedimentation tank that is fed with $55\frac{L}{s}$ of wastewater containing $180m\frac{g}{l}$ of settleable solids. If the process efficiency is $80\%$ :

a$)$ Make a diagram of the process, indicating the variables delivered and requested.

b$)$ Calculate what the concentration of settleable solids will be in the outlet stream of the tank

c$)$ What will be the amount in $m\frac{g}{s}$ of the settleable solid in the outlet stream of the tank?

d$)$ How many kilograms of settleable solid will accumulate per day at the bottom of the tank?