Published by Muhammad Naeem in Academic
Is there any way to increase the pH of water to 9 while maintaining TDS at 30 in mineral water?
How can this be done after reverse osmosis? Which technology or chemicals can be used to achieve this?
Category: Academic
See these two videos on the topics: pH of mineral waters, below:
https://www.youtube.com/watch?v=2qYdHCz0lek
https://www.youtube.com/watch?v=Se12y9hSOM0
Published by Carlos Henrique Catunda Pinto, Professor and Researcher at UERN - Brazil
Dear Muhammad Naeem,
We are a France based water treatment company providing solutions for the bottling industries (visit http://www.ice-water-treatment.com/en/) over the world.
We are familiar with mineral water stakes, should the mineralisation be natural or controlled. Our solutions are deployed for many mineral waters, and pH often comes as a specific criteria. We could propose some tailor-made process according to you water characteristics. Feel free to transmit me your data, which I would forward to the sales engineer in charge with your geographic area.
I hope that we talk soon.
Patrick Ballato - pballato@ice-water-engineering.com
Published by Ballato Patrick, Water and Hygiene Consultant
https://www.gaiam.com/blogs/discover/how-to-increase-the-alkalinity-of-your-water
The above might partially answer your question.
TDS could be higher,without problem.
But mineral water has defined parameters,and modified water is just bottled water,and may not be possibly qualified as mineral water. Moreover,in the case of artificial water or process water from RO,it is advised to add vital minerals.
Published by Suresh Kumar.S
You can not modify Mineral water! (only aeration to remove the excess iron, and max 1 micron filter to remove sediment/sand). If you do some modifications - you can not call it Mineral water, but Drinking water. Please clarify first what exactly you want to produce Mineral (premium) or cheap modified Drinking water.
Published by Gints Rotčenkovs, SnapTest.LV
According to WHO criteria, the ideal pH level of drinking water is often in the range of 6.5 to 9.5. An aesthetic objective of ≤500 mg/L has been established for total dissolved solids (TDS) in drinking water by WHO.
The TDS is directly proportional to pH, for mineral water TDS is 30 ppm. But each country different parameters. according to USA the TDS is 500 ppm. One of the most misunderstood aspects of water is it pH level. In recent times, there are many claims being made about the advantages of drinking alkaline water that is said to be rich with antioxidants, and has the ability to slow down degenerative diseases and slow down ageing. According to some doctors, our body is anyway designed to adjust to its ‘optimal pH balance’. Once alkaline water enters your stomach, your body simply pours in greater amounts of acid to neutralize it.
Published by Prem Baboo, Researcher at www.researchGate.net
Reverse osmosis water is not recommended for long-term drinking purposes. It's "synthetic water" and does not exist in nature. It's devoid of the important trace minerals needed by the body. It's sometimes called "hungry water" in that it steals vital minerals from the body to make itself whole. You will need to add minerals such as calcium and magnesium and this will increase the TDS. Higher TDS can be a good thing.
Published by Charles Bensinger, Director of Water Analytics
Reverse osmosis water is not recommended for long-term drinking purposes.
How?
Published by Mohsan Ali Chaudhry
What about very pure natural glacier water ? The Norvegian natural water VOSS has a TDS of 44ppm !
Published by Philippe Tob, Tobco SA/NV - Managing Director
The question seems questionable !
One side you say that its a Mineral Water and say the TDS is 30ppm ! Which Mineral Water for Drinking in the World has TDS 30ppm. Please purchase any Mineral Water Bottle and Check the TDS Levels on it which is clearly printed on almost every company's mineral water bottle.
But what I feel if you are influenced with the theory which is prevailing now to have drinking water on Alkaline Side which could have some health benefit, then there is another case. So you can increase pH by adding as per prescribed by many fellows here but there could be a compromise between taste and may be odor by adding some chemicals.
Permissible range of TDS in drinking water: Different government has different regulations for the TDS level. The U.S. EPA sets the maximum contaminant level for TDS 500 ppm where as WHO has different prescribe limits.
An aesthetic objective of ≤500 mg/L has been established for total dissolved solids (TDS) in drinking water by WHO. At higher levels, excessive hardness, unpalatability, mineral deposition and corrosion may occur. At low levels, however, TDS contributes to the palatability of water. Most people think of TDS as being an aesthetic factor. In a study by the World Health Organization, a panel of tasters came to the following conclusions about the preferable level of TDS in water:
Taste of Water with Different TDS Concentrations | |
Level of TDS (milligrams per litre) | Rating |
Less than 300 | Excellent |
300 - 600 | Good |
600 - 900 | Fair |
900 - 1,200 | Poor |
Above 1,200 | Unacceptable |
Published by Engr. Mansoor Ahmed PhD. Scholar, Consultant/Advisor Water/Wastewater Treatment - Consultant
What about very pure natural glacier water ? The Norvegian natural water VOSS has a TDS of 44ppm !
Published by Philippe Tob, Tobco SA/NV - Managing Director
You may want to consider electrolysis. The water is alkaline at the cathode and has a higher pH. The "alkaline" water can be siphoned at the cathode. It's an electrochemical process. You may look-up "ionizers" on the web. This said, I do not endorse the health and other claimed benefits of "alkaline" water and the effectiveness of "Ionizing" home appliances.
The other processes e.g. mineralization will affect the TDS.
Published by Philippe Tob, Tobco SA/NV - Managing Director
You can add some dolomite lime for Ca and Mg alkalinity and a touch of NaOH if you want a pH boost for some reason, You are not allowed to treat mineral water and still label it mineral water. Check on the Water Codex Alimentarius requirements.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
you can dose morpholine in RO permeate water,TDS will be remain same but ph increase . This should be dosed minimum .
Published by soumen Basu, Process Design at Design & Operation of WTP,ETP , Drinking Water Project
No morpholine in drinking water!!!!
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
Why do you want to do this?
Published by Steve Byg, CWP, Certified Water Professional - Water Quality Chemist at Ixom Watercare
Quite.
Published by Nick Ridgway, Design Engineer at Integrated Water Services
You can try adding baking soda to the water. Getting the water to a pH of 9 is possible but you must consider the taste of the water.
After treating water with RO you loose trace minerals from the water. It is very essential to introduce these back into the water and can be done by passing the water through a remineralizer.
Many companies in the U.S. sell remineralizing cartridges.
Published by Chetan Shukla, Clean Environmental Technologies Pvt. Ltd. - Director