Question 2 for A=44.25;B=45.25;C=23.1;D=7.72;E=223.5 A water treatment plant with an average flow Q=A Usec treats its water with alum at a dose of Bmg/L. Alum coagulation is used to remove particulate matter, and in the process, alkalinity is consumed, as seen from the reaction below. Al2(SO4)318H2O2Al(OH)3(3)+6H++18H2O+3SO442 6H++6 Alkalinity 4q.[HCO3+CO32]6 Consumed Alkalinity 64[H2CO3+HCO3] If the total solids in suspension is reduced from Cmg/L to 1.50mg/L, determine a. the total amount of alkalinity consumed ( (kgasCaCO3/ day) b. the final alkalinity of the water (mg as CaCON/L ) and the final pH (assume a closed carbonate system) c. the total amount of dry solids produced (kg/ day) Given: - Initial pH of water =D - initial alkalinity =Emg/L as CaCO3 - Assume a closed carbonate system, meaning that H2CO3 is not exchanged with the atmosphere. The carbonic acid dissociation equations are given in Question 1. - If useful to you, you can assume that the electro-neutrality of the water is balanced by K+, and that the concentration remains constant. - Molecular weights: alum =666.42g/mol,Al(OH)3=78.00g/mol - Equivalent weights: CaCO3=50.05g/e