4.C.2 Liquidity index, LI, defined by Eq. (4.26), can indicate probable engineering behavior depending on the natural or current state of moisture content. For Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203 example, the material behavior can vary from a brittle solid (LI < 1) to vis- cous fluid (LI> 1), with an intermediate plastic state (0

For a natural raw water containing the following water quality in the table. Check lecture 05 slides on page 52 to determine how much slaked lime is needed remove all hardness. Atomic weight or molecular Concentration weight (g/mol) 120 mg/L 100 mg/L as CaCO3 25 meg/L Ca2+ 40 Mg2+ HCO3 24 61 O A. 5 meq/L О В. 700 mg-СаСОЗ/L O C. 15 meq/L O D. No lime is needed.

You are asked to design a water softening system to bring following water to a final hardness if 75.0 mg/L as CaCO3. The ion concentrations reported below are all mg/L as CaCO3. Ca2+ = 240.00; Mg2+ = 90.0; HCO3- = 268.0; and CO2= 18.0 The total lime required and initial NCH are nearly 1. 330 and 268 mg/L as CaCO3 2. 376 and 62 mg/L as CaCO3 3. 330 and 27 mg/L as CaCO3 4. 376 and 268 mg/L as CaCO3

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