Dear Dr Rajmohan,

The appropriate water treatment for your problem will also depend on
the water's end use.
For small domestic water supply, naturally you would be looking for a
cheap and simple water treatment method and for large water supply you
may have to go for industrial treatment which requires a water treatment
plant. To give you an idea, the different treatment methods are
explained on this web link
http://www.ext.nodak.edu/extpubs/h2oqual/watsys/ae1045w.htm

Most water softeners substitute Na for Ca. In your case this will not
work because you already have high Na over Ca. Your sample is also very
saline which indicates you may have to go for reverse osmosis. If the
end use for this water is drinking, you will need consult the drinking
water standards in your country to find out what levels you need the
water treatment to decrease those high ion levels. You could be looking
at a combination of water treatment method.

Hope this helps,
Susana

>>> <gwrm@...> 03/02/06 4:20 am >>>

There is 1 message in this issue.

Topics in this digest:

1. Treatment for high pH water
From: "Dr.N.Rajmohan" <nrm_72@...>


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Message: 1
Date: Mon, 27 Feb 2006 22:14:32 -0800 (PST)
From: "Dr.N.Rajmohan" <nrm_72@...>
Subject: Treatment for high pH water

Dear Members

I am looking for a suitable treatment method for high pH water
(greater than 10). It is originated from Oman Ophiolite as the product
of modern, low temperature serpentinization.

Below, I am giving the range of chemical constituents in this water
samples

EC (microS/cm) - 500 -20,000

pH - 10 - 13

HCO3 - 0 -700 ppm
CO3 - 2 - 100 ppm
Cl - 75 - 4700 ppm
SO4 - 10 - 700 ppm

Ca - 1 - 1000 ppm
Mg - 1 - 50 ppm
Na - 40 - 3080 ppm
K - 2 - 622 ppm


Can anyone please send me the information about treatment methods and
relevant reprints?

Thanks in advance

Regards

Rajmohan