Methods to Remove Permanent Hardness of Water
What are the types of hardness of water?
Hardness of water can be divided into two types-
- Temporary hardness of water
- Permanent hardness of water
What is the permanent hardness of water?
Permanent hardness of water is caused because of the presence of soluble chlorides and sulfates of magnesium and calcium in water.
what are the units of permanent hardness of water?
The units of permanent hardness of water are parts-per-million or ppm and milligrams per liter or mg/L and degree french.
How to remove permanent hardness of water?
Permanent hardness of water can not be removed by boiling method because of the steadiness of sulfates and chlorides of calcium and magnesium. In this case we can remove this hardness by applying Calgon’s method, Gan’s permutit method, ion-exchange method and by using washing soda.
Which salt makes water permanently hard?
CaCl2 , MgCl2 , CaSO4 , MgSO4 are the salts responsible for the permanent hardness of water.
Why is water hardness is important for health?
Though hard water is harmful for our skin and hair, but presence of calcium and magnesium in hard water, in a right combination, helps in treating constipation, often gastric problems. It is also helpful in the treatment of rectal cancer, pancreatic cancer etc. Hence it is important for our health as well.
What is the pH of hard water?
The hard water is alkaline that means its pH level is higher, above 8.5 .
What are the ppm of hard and soft water?
Water is considered soft if total hardness is less than 75 ppm, hard when total hardness is in between 150 to 300 ppm. and very hard when hardness is above 300 ppm.
Methods to Remove Permanent Hardness of Water
Water is a crucial part of our lives. It is enriched with minerals that are important for our good health. Permanent Hardness of water is not only a theory but also a real-life problem we deal with every day in our lives. Knowledge of this concept helps the students relate the chemistry concepts to real-life problems and is also important for many exams like JEE and NEET. While temporary hardness is easy to eliminate by boiling, permanent hardness is not, so we have to use some chemical methods in this case. In this article, we will discuss in detail the methods of removing the permanent hardness of water, along with a few topics related to it.
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