A$)$ For $10$ marks $-$ After undertaking several tests it was determined that the Alum dose required was $4\mathrm{.}63$ mg$/$L as Al$,$ using a molecular weight ratio of $595/54,$ was the amount of Alum required in mg$/$L

B$)$ For $10$ marks $-$ If the WTP has a maximum flow $100$ MLD$,$ what is the maximum dose of Alum, using the answer from A$,$ in L$/$hr$.$

C$)$ For $10$ marks $-$ if the flow in B was reduced to $45\%$ what would the output for the dosing pump, assuming it was a positive displacement dosing pump, in L$/$h

D$)$ For $10$ marks $-$ what would be the net and gross capacity of the $30$ day Alum storage tank in m$3?$

Answer these four questions