7. Estimate the scaling potential for the RO-treated water samples, by applying LSI. Unit Constituent Ca²+ HCO3 TDS pH mg/L as CaCO3 mg/L as CaCO3 mg/L A 5 7 20 6.5 Water B 10 12 25 7.8
7. Estimate the scaling potential for the RO-treated water samples, by applying LSI. Unit Constituent Ca²+ HCO3 TDS pH mg/L as CaCO3 mg/L as CaCO3 mg/L A 5 7 20 6.5 Water B 10 12 25 7.8
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Estimate the scaling potential for the RO-treated water samples by applying LSI

Transcribed Image Text:T
Test run time, min
2
5
10
20
Ca²+
HCO3
TDS
pH
4. Estimate the scaling potential for the RO-treated water samples, by applying LSI.
Constituent
Unit
Cumulative volume filtered, mL
B
500
700
890
1150
mg/L as CaCO3
mg/L as CaCO3
mg/L
A
315
575
905
1425
A
5
7
20
6.5
Water
B
10
12
25
7.8
Expert Solution

Step 1: Langelier Saturation Index (LSI)
The Langelier Saturation Index (LSI) is a measure of the tendency of water to form calcium carbonate scales.
It is calculated using the following equation:
LSI = pH - pHs
where
- pH is the actual pH of the water
- pHs is the saturation pH of calcium carbonate.
Step by step
Solved in 4 steps with 1 images
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