Q2: (12.5 Marks) Two-stage softening: A water with the ionic characteristics shown below is to be softened by the lime-soda-ash-excess-lime process. The lime used is (85 %) pure and the soda ash is (85 %) pure And a flow of (5×10³. m³/d), Calculate? 1- Draw the treatment units scheme 2- Calculate the (SO4) Concentration in mg/L unit? 3- Calculate the required chemical quantities in (meq/L) unit.? 4- Draw a bar diagram of the finished water.? 5- Calculate The Total Hardness in mg/L Unit? Element CO₂ Ca+2 Hardness Mg+2 Hardness Na+1 Alkalinity SO42 CH¹ K+1 HCO3¹ 90 37.5 62.5 Concentration 6.6 mg/L as mg/L as 19.55 mg/L as ? 42.6 13.685 (mg/L) (CaCO3) (CaCO3) (CaCO3) 39.1 Atomic Mass 44 40 24.3 23 96 35.5
Q2: (12.5 Marks) Two-stage softening: A water with the ionic characteristics shown below is to be softened by the lime-soda-ash-excess-lime process. The lime used is (85 %) pure and the soda ash is (85 %) pure And a flow of (5×10³. m³/d), Calculate? 1- Draw the treatment units scheme 2- Calculate the (SO4) Concentration in mg/L unit? 3- Calculate the required chemical quantities in (meq/L) unit.? 4- Draw a bar diagram of the finished water.? 5- Calculate The Total Hardness in mg/L Unit? Element CO₂ Ca+2 Hardness Mg+2 Hardness Na+1 Alkalinity SO42 CH¹ K+1 HCO3¹ 90 37.5 62.5 Concentration 6.6 mg/L as mg/L as 19.55 mg/L as ? 42.6 13.685 (mg/L) (CaCO3) (CaCO3) (CaCO3) 39.1 Atomic Mass 44 40 24.3 23 96 35.5
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Q2: (12.5 Marks)
Two-stage softening: A water with the ionic characteristics shown below is to be
softened by the lime-soda-ash-excess-lime process. The lime used is (85 %) pure and
the soda ash is (85 %) pure And a flow of (5×10³. m³/d), Calculate?
1- Draw the treatment units scheme
2- Calculate the (SO4) Concentration in mg/L unit?
3- Calculate the required chemical quantities in (meq/L) unit.?
4- Draw a bar diagram of the finished water.?
5- Calculate The Total Hardness in mg/L Unit?
Element
CO₂
Ca+2
Hardness
Mg+2
Hardness
Na+1
Alkalinity
SO42
CH¹
K+1
HCO3¹
90
37.5
62.5
Concentration
6.6
mg/L as
mg/L as
19.55
mg/L as
?
42.6
13.685
(mg/L)
(CaCO3)
(CaCO3)
(CaCO3)
39.1
Atomic Mass
44
40
24.3
23
96
35.5
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