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https://www.waterfilters.net/Chloride-Water-Treatment.html
Chloride is a key ingredient in the chlorination of drinking water. W.H.O states that chloride levels above 250 mg/liter could cause a detectable salty taste in water …”. This is especially true for those on low-sodium diets and people with certain health conditions.
https://homewaterresearch.com/chloride-in-drinking-water/
How Does Chloride Get Into Drinking Water?
Chloride occurs naturally in our environment, particularly in bodies of water. It’s often found alone as salt or sodium chloride, but it often appears alongside calcium and potassium, too.
Because this is a natural phenomenon, elevated chloride levels are sometimes detected in tap water. These high levels are caused by the weathering of soils, movements of geological formations, precipitation, and transferred through our food [2].
Chloride is also found in public water systems (eg. city water) or private well systems that use chlorine for water treatment. Well water can also be contaminated with fertilizers or road salts.
Softeners, Added Chloride and Drinking Water
Besides the natural occurrences that we spoke about, chloride can also be added to our domestic drinking water intentionally, when using a water softener. This helps to soften water and make it more appetizing to drink.
If you have a water softener, and you think you have too much chloride in your water then consider some of the options for removing it we’ll talk about below.
https://www.urbansaqua.com/blog/chloride-removal/
Chloride Reduction & Removal in Residential Applications
By: Michael Urbans
Strong Base Anion resins in the chloride form will not remove or reduce chlorides. Why? The resin exchanges chloride for alkalinity and contaminants (nitrate, TOC, etc.). Details are as follows:
Strong Base Anion resin used in the home is regenerated with NaCl (salt).
As water passes through any anion resin in the chloride form it is exchanging chloride for anions which have a greater affinity for the SBA – nitrate, sulfate, etc.
When the resin is exhausted it is regenerated with NaCl. The anion resin is overwhelmed by the high concentration of chlorides and the nitrates, sulfates etc. are exchanged off as the chloride goes back on the SBA exchange sites.
If you have 450 ppm of chloride coming in, it’s going to increase to a much higher level, equivalent to the amount of sulfate, nitrate anions that you take out of the water. This same problem will occur if you are trying to reduce sulfates – SO4.
Adding sodium carbonate to the brine tanks may reduce chloride but it’s not a real strong science so it’s not recommended.
Membrane technology – Reverse Osmosis is the only practical way to reduce chlorides in residential applications.
Demineralization: A strong acid cation (SAC) in hydrogen (H) form followed by a strong base anion (SBA) resin in hydroxide (OH) form following will remove all ions including chloride but acid and caustic will be necessary for regeneration. This is not practical for home use.
Mixed bed resin: A mixed bed composed of SBA in hydroxide form and SAC in H form will also remove all ions including chlorides however, as with demineralization it is not practical for home use.
https://www.waterfilters.net/Chloride-Water-Treatment.html
Chloride is a key ingredient in the chlorination of drinking water. W.H.O states that chloride levels above 250 mg/liter could cause a detectable salty taste in water …”. This is especially true for those on low-sodium diets and people with certain health conditions.
https://homewaterresearch.com/chloride-in-drinking-water/
How Does Chloride Get Into Drinking Water?
Chloride occurs naturally in our environment, particularly in bodies of water. It’s often found alone as salt or sodium chloride, but it often appears alongside calcium and potassium, too.
Because this is a natural phenomenon, elevated chloride levels are sometimes detected in tap water. These high levels are caused by the weathering of soils, movements of geological formations, precipitation, and transferred through our food [2].
Chloride is also found in public water systems (eg. city water) or private well systems that use chlorine for water treatment. Well water can also be contaminated with fertilizers or road salts.
Softeners, Added Chloride and Drinking Water
Besides the natural occurrences that we spoke about, chloride can also be added to our domestic drinking water intentionally, when using a water softener. This helps to soften water and make it more appetizing to drink.
If you have a water softener, and you think you have too much chloride in your water then consider some of the options for removing it we’ll talk about below.
https://www.urbansaqua.com/blog/chloride-removal/
Chloride Reduction & Removal in Residential Applications
By: Michael Urbans
Strong Base Anion resins in the chloride form will not remove or reduce chlorides. Why? The resin exchanges chloride for alkalinity and contaminants (nitrate, TOC, etc.). Details are as follows:
Strong Base Anion resin used in the home is regenerated with NaCl (salt).
As water passes through any anion resin in the chloride form it is exchanging chloride for anions which have a greater affinity for the SBA – nitrate, sulfate, etc.
When the resin is exhausted it is regenerated with NaCl. The anion resin is overwhelmed by the high concentration of chlorides and the nitrates, sulfates etc. are exchanged off as the chloride goes back on the SBA exchange sites.
If you have 450 ppm of chloride coming in, it’s going to increase to a much higher level, equivalent to the amount of sulfate, nitrate anions that you take out of the water. This same problem will occur if you are trying to reduce sulfates – SO4.
Adding sodium carbonate to the brine tanks may reduce chloride but it’s not a real strong science so it’s not recommended.
Membrane technology – Reverse Osmosis is the only practical way to reduce chlorides in residential applications.
Demineralization: A strong acid cation (SAC) in hydrogen (H) form followed by a strong base anion (SBA) resin in hydroxide (OH) form following will remove all ions including chloride but acid and caustic will be necessary for regeneration. This is not practical for home use.
Mixed bed resin: A mixed bed composed of SBA in hydroxide form and SAC in H form will also remove all ions including chlorides however, as with demineralization it is not practical for home use.
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