Need help with Question 3 PLEASE 1. Based on the following water composition, determine the alkalinity, total hardness andcarbonate hardness in units of mg/L CaCO3. (Note: you may want to refer back to our notes onunits and recall that CaCO3 has 2 eq/mol.)lonConc. (mg/L)MW (g/mol) Equiv.Ca2+30Mg2+10Na12CI-11Alk (HCO₂) 1104024.32335.561Conc. (meq/l)201.512.15 0.823230.521735.5 0.30985611.80327Conc (mg/L asCaCO3)7541.1526.08515.492590.1635 2. Jar testing conducted with the water described in problem 1 determined an optimum alum doseof 20 mg/L for particle removal. Based on this alum dose, determine (a) the amount of naturalalkalinity (mg/L as CaCO3) consumed, (b) the amount of alkalinity remaining, and (c) the amountof alum required (kg/yr) if the treated flow is 10 MGD.3. The particles created at the conclusion of the rapid mix step associated with the alum additionin problem 2 have an average diameter of 20 μm and specific gravity of 2.0. During flocculation,the size increases to 75 µm, but the more open aggregate structure decreases the specificgravity to 1.9. The water temp is 18 °C. Calculate the settling velocity of both particles. Howdoes the change in particle properties impact the settling velocity? Make sure to check theReynolds Number.

settling velocity v=v=ρgd2(G-1)18μ where ρ density of waterg gravityd dia of particleG specific…

The particles created at the conclusion of the rapid mix step associated with the alum addition in problem 2 have an average diameter of 20 µm and specific gravity of 2.0. During flocculation, the size increases to 75 µm, but the more open aggregate structure decreases the specific gravity to 1.9. The water temp is 18 °C. Calculate the settling velocity of both particles. How does the change in particle properties impact the settling velocity? Make sure to check the Reynolds Number.

The particles created at the conclusion of the rapid mix step associated with the alum addition in problem 2 have an average diameter of 20 µm and specific gravity of 2.0. During flocculation, the size increases to 75 µm, but the more open aggregate structure decreases the specific gravity to 1.9. The water temp is 18 °C. Calculate the settling velocity of both particles. How does the change in particle properties impact the settling velocity? Make sure to check the Reynolds Number.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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