Assume that the water temperature is 10 oC and the settling tank has a 3-m depth. Calculate the theoretical settling velocity (m/s), overflow rate(m3/m2-d), and hydraulic detention time (h) required in the following cases. a. Calcium carbonate precipitates with a specific gravityof 1.2 and diameter of 0.1 mm. (These particles will be removed in a settler after precipitative softening, which is a process we will discuss later in the course.)b. Alum floc with a specific gravity of 1.002 and diameter of 1.0mm. (These particles are to be removed in a settling tankafter coagulation/flocculation, which are processes that we will discuss later in the course.)c. What will be the corresponding design loading rate and detention time for the above cases if the efficiency of the settling basins is 50%, assuming the removal is linearly related to efficiency?