A RIL treatment plant has a sedimentation tank that is fed with $55$ L$/$s of RIL that contains $180$ mg$/$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 tank outlet stream.

c$)$ What will be the amount in mg$/$s of the settleable solid in the tank outlet stream?

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