Hardness of Water

The presence of calcium, magnesium salts, i.e.: bi-carbonates, sulphates, chlorides, in water is called hardness of water. The water which contains these salts is called hard water.
Hardness is a term applied to the water denoting a measurement of its pH and metal salts contest.
Classification of Hardness: Hardness is two types. They are:
  1. Temporary hardness.
  2. Permanent hardness.
Temporary hardness: Temporary hardness is due to the presence of bi-carbonates of calcium and magnesium. This type of hardness is called temporary hardness. It can be removed by easy means like boiling.
Permanent hardness: It is due to the presence of chlorides or sulphates of calcium and magnesium. This type of hardness is called permanent hardness. These salts do not decompose on boiling. So permanent hardness can not be removed.
Method of expressing hardness of water: The hardness of water is expressed by the amount of calcium present in water. In this method chloride, sulphates and bi-carbonates of calcium and magnesium are not takes. Hardness of water is expressed by:
  1. PPM (Parts per million).
  2. In degrees (Grains/gallon).
PPM: The number of grains of calcium carbonates which is present in one million grains of water is called PPM. 1 grain of calcium carbonate present in 1 million grain water.
In degree: The number of grains of calcium carbonates which is present in 70000 grain of water.

8 comments:

  1. Nice post. I was checking constantly this blog and I am impressed! Extremely helpful information specially the last part I care for such info a lot. I was seeking this particular information for a very long time. Thank you and good luck.
    sa gaming vip

    ReplyDelete
  2. Your article has piqued a lot of positive interest. I can see why since you have done such a good job of making it interesting.
    JAV Online

    ReplyDelete
  3. Thanks for taking the time to discuss this, I feel strongly about it and love learning more on this topic.
    investment strategy

    ReplyDelete
  4. nice bLog! its interesting. thank you for sharing....
    jokergaming

    ReplyDelete
  5. You know your projects stand out of the herd. There is something special about them. It seems to me all of them are really brilliant!
    keluaran hk

    ReplyDelete
  6. It was wondering if I could use this write-up on my other website, I will link it back to your website though.Great Thanks.
    Miniature schnauzer puppies for sale

    ReplyDelete
  7. I read that Post and got it fine and informative. Please share more like that...
    freedom-aff.net

    ReplyDelete
  8. thanks for this usefull article, waiting for this article like this again.
    freedom-aff.net

    ReplyDelete

Spamming is strictly Prohibited. Each and every Spam Comment will be deleted soon. So stay away from Spamming.