Question

Que 4.11.
A water sample having the following data :
Mg Co, 84 mg/L, CaCO, = 40 mg/L, CaCl, = 5.5 mg/L, Mg(NO3)3 = 37
mg/L, KCl = 20 mg/L.
Calculate the amount of lime (86%) and soda (82% pure) needed for
the treatment of 80,000 litres of water.​

Answer 1

Explanation:

Constituents Quantity Multiplication factor CaCO3 equivalent

MgCO3 84 100/84 100

CaCO3 40 100/100 40

CaCl2 5 100/101 4.5

Mg(NO3)2 37 100/148 25

KCl 10 - -

Lime = 74(2X100+40+25)100=19610/100=196.1 %

Soda = 106(4.5+2.5)100=31.27%

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