2.28. A groundwater is being considered for use as a domestic supply. Thewater has a temperature 15°C and the following chemical analysis:CONCENTRATION,CONSTITUENTCa+?190Mg*2Na*Fe*284750.10.2Cd+2HCO,So,26064CO,-230440NO,-35a. Use an anion-cation balance to determine if the sample analysis isreasonable.b. What is the hardness of the water?

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Answered: 2.28. A groundwater is being considered…

2.28. A groundwater is being considered for use as a domestic supply. The water has a temperature 15°C and the following chemical analysis:

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter7: Permeability

Section: Chapter Questions

Problem 7.17P

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Question

2.28. A groundwater is being considered for use as a domestic supply. The
water has a temperature 15°C and the following chemical analysis:
CONCENTRATION,
CONSTITUENT
Ca+?
190
Mg*2
Na*
Fe*2
84
75
0.1
0.2
Cd+2
HCO,
So,
260
64
CO,-2
30
440
NO,-
35
a. Use an anion-cation balance to determine if the sample analysis is
reasonable.
b. What is the hardness of the water?

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