Water with an alkalinity of 4.26 meq/L, is to be soften by the lime-soda process has...
Water with an alkalinity of 4.26 meq/L, is to be soften by the lime-soda process has the following components: 3.25 meq/L calcium, 2.67 meq/L magnesium, and 0.36 meq/L carbon dioxide. The amount of calcium oxide (85% pure), in lb/MG, needed per million gallons is
Homework Answers
1 gallon = 3.785 liters
Million Gallons = 106 gallons = 3.785*106 liters => 1 liter = 1/(3.785*106) million gallons
1 Kg = 2.20462 lb => 1 mg = 10-6kg = 2.20462* 10-6 lb
Lime required = 281.1 mg/l = 281.1*2.20462* 10-6*3.785*106 = 2345.635 lb/MG (ans)
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Water with an alkalinity of 4.26 meq/L, is to be soften by the
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3. Determine the lime and soda ash dose, in mg/L as Ca(OH)2 and Na2CO3, to soften the water of a village to a final hardness of 40.0 mg/L as CaCO3. Chemical analysis showed that the water contains Na+ (50 mg/L), Ca2+ (150 mg/L), Mg²+ (30 mg/L, HCO3 (100 mg/Las CaCO3), Cl (80 mg/L). and CO2 (5.0 mg/L).
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21 Points]) A water tre of vari Water treatment plant needs to soften water containing the below concentration e. Assume the pH is near neutral and that the flowrate is 1.7 MGD (million ous constituents gallons per day). Determine: a) the total hardness (mg/L as CaCO.) b) the total alkalinity (mg/L as CaCO3) c) b ased on the i on balance, does the analysis appear to be missing some ions? ay the total amount of sludge (CaCOs and Mg(OH)2) produced...
Please need ASAP
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