Water Softening
There
is a third issue regarding water softening and
hard water. The ions in the water can be considered an electrolyte.
In this case the water can actually have galvanic corrosion. This
problem is when one metal will corrode another metal, breaking it
down. The properties of water softening allow for sodium ions to
clean the water. The sodium ions or brine as it is called is less
active. This means the corrosive effects will not occur even though
you are using another ion to clean the water.
The process begins with a tub of resin. Negatively charged resins
will absorb and bind ions which have a positive charge. The resin
has univalent hydrogen, potassium or sodium. It will then exchange
with the divalent calcium and magnesium in the water. The water
will pass through a column of resin. The hardness ions will replace
the hydrogen, sodium or potassium. The resins can remove carbonate,
sulphate ions, and bi- carbonate. It will then replace these with
hydroxyl ions. You have a single water softener which uses the same
resins as that of the double water softeners.
After the resin process there is regeneration. Regeneration is when
cations and anions will lose their effectiveness and therefore have
to be recreated. This is when they go through the brine chemical
of sodium chloride or potassium chloride. Sometimes hydrochloric
acid is used. The salts will get flushed out of the system. Typically
this means they are disposed of in the soil or sewer. The process
is slightly damaging to the environment, so it is better to have
a drain set up that puts it into the sewer. There are also companies
that will take the waste from the water softening process.
To install a water softener a professional is needed. Using a professional
will allow the system to be set up correctly and thus the resin
is stored or released into the sewer properly. The amount of brine
needed will have to be adjusted, as well. |