Question 3: Water that is to be softened by lime-soda process has the co Ca S...
Groundwater is softened to 80 mg/L hardness as CaCO_3 using a lime/soda process. The groundwater initially has 2 mg/L CO_2, 100 mg/L Ca^2+, 8 mg/L Mg^2+, 260 mg/L HCO_3^-, and other anions. What amount of lime and/or soda ash, in mg/L as CaCO_3, is required? Assume that Mg^2+ less than 40 mg/L as CaCO_3 does not need to be removed.
(15 pts) Calculate the lime and soda ash for Hardness removal of a water with the following water chemistry: CO2/H2CO3 = 0.7 meq/L Ca(HCO3)2 3.5 meq/L CaSO4 = 1.8 meq/L MgS04 2.0 meq/L 1. (15 pts) Calculate the lime and soda ash for Hardness removal of a water with the following water chemistry: CO2/H2CO3 = 0.7 meq/L Ca(HCO3)2 3.5 meq/L CaSO4 = 1.8 meq/L MgS04 2.0 meq/L 1.
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).
Question 30 (4 points) Groundwater defined by the following analysis is to be softened by lime-soda ash treatment. The target total hardness is 90 mg/L as CaCO3, in which CH = 40 mg/L as CaCO3 CO2 = 30 mg/L as CO2 = 120 mg/L as Ca2+ Ca2+ Mg2+ = 48 mg/L as Mg2+ Nat = 46 mg/L as Nat HCO3 = 200 mg/L as Cacos SO42- 96 mg/L as SO42- 35 mg/L as CI FORMULA CO2 CaCO3 EQUIVALENT WEIGHT (S/EW)...
part B 111 College,ofEngineering 3. A water treatment plant treats 0.6 of now be upgraded to removal analyzed the water and found the following concentrations (as speciesy treats 0.6 ms flow of groundwater. It has been informed that it must achieve hardness removal down to 75.0 mg/L, as CaCo,. A summer intern en) 165 (mw/L) 38 237 Co PH Na' 7.8 a) Determine the total hardness CTHD, carbonate hardness (CH), and non-carbonate hardness ising the attached flow chart, determine the...
QUESTION 3 Given the following information determine the annual chemical cost to soften the water in a treatment plant. Water flow rate = 0.04 m3/s Ca2+ = 167 mg/L as CaCO3 Mg2+ = 21 mg/L as CaCO3 HCO3 = 167+21 mg/L as CaCO3 CO2 = 7 mg/L as CaCO3 Cost of lime (purchased as Cao)= 76.7 per megagram (Mg) Cost of soda ash (purchase as Na2CO3) = 261.1 per megagram (Mg) Assume the lime is 90 percent pure and soda...
Best Value Cola produces a lemon-lime soda. The production process starts with workers mixing the lemon syrup and lime flavors in a secret recipe. The company enhances the combined syrup with caffeine. Finally, the company dilutes the mixture with carbonated water. Best Value Cola Incurs the following costs in thousands): (Click the icon to view the costs) Read the requirements Requirements 1, 2 and 3. Classify each of these costs according to its category in the value chain and further...
Chapter 18 Thermodynamics Homework 1.Predict the sign of AS for each process: a) The boiling of water b)2HgO(s)-2Hg(I) + 02(s) c) CaCO, (s)CaO(s)+ CO (g) 2. Is the following process spontaneous or nonspontaneous at a given temperature? NaNO,(s) ->NaNO,(aq) 3. If a reaction has ΔS < 0 and ΔΗ < 0 will the reaction always be spontaneous, spontaneous at low T, spontaneous at high T, or never spontaneous? 4.Consider this reaction: Calculate ΔG at 25 °C and determine whether the...
is this better? i posted this question two times and everyone is saying its not clear. i cant make it more clear then this. its due soon can someone please do it. its been two days since i post it the bottom pics that are in the end should be visable 10 current Design has two main product lines.compoule yale, which are handmade and 11 very laborIntensive and retomolded kayaks, which require less laber but employ more expensive equipment Current...
3 questions 6 Part S Cases What's Ahead? Microsoft has been the leader in the OS market for quite some time, but it does not know much about retailing. Thus, the opening of company-owned retail stores in an at- tempt to counteract Apple's channel strategy success is indeed a bold step on the part of the OS giant. Is Microsoft going to be able to do it? One could argue that Microsoft lacks the type of innovative flare that...