atomic number 11 hydrogen carbonate is a water supply discourse method acting used to dampen pee ( get rid of atomic number 20 and atomic number 12 dross from it ) in old water system softener system .
The summons use a chemic response to exchange the atomic number 20 hydroxide ( or atomic number 12 hydroxide ) into atomic number 20 carbonate , which is n’t water system soluble .
muted pee normally has upgrade level of fade away Na in it compare to stock pat piddle , which is a small wellness headache .
Due to the refuse cost and expectant zip and filtration efficiency of rearward osmosis system of rules , atomic number 11 hydrogen carbonate piddle softening is tardily being displace as a piddle discussion method acting in home .
The Chemical Reaction
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Sodium hydrogen carbonate is introduce into a filter that piddle propagate through .
This was the chemical reaction undress dissolve ca hydroxide out of the piss , where the atomic number 20 hydroxyl group bond to the two carbon paper molecule in na hydrogen carbonate , constitute ca carbonate and a spare na ion .
The atomic number 20 carbonate is then precipitate out of the water system flowing and hive away .
A exchangeable chemical reaction also strip out atomic number 12 ion in the H2O .
Because of the nature of the chemical substance response , this method acting of H2O softening is less effectual when the Ca or atomic number 12 is tie to sulphur compound rather than hydroxyl chemical group .
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Filtration requirement
Because the atomic number 11 bicarbonate H2O discourse method acting outcome in a non - soluble precipitate , the water system current typically ask filtration .
In triplex discussion arrangement , the atomic number 11 hydrogen carbonate handling is ordinarily the mediate handling in the summons , after charcoal gray and ionic filtering ( typically blend into one stride ) and before placer filtration to withdraw the precipitate .
large Scale Applications
While atomic number 11 bicarbonate weewee discussion method were once mutual in the family , they have for the most part been supercede by treble filtration scheme , or , more lately , turn back osmosis organisation .
This was the basal hangover for the na hydrogen carbonate piss handling method acting is in municipal h2o plant , where it ’s used in bombastic heap with industrial scale of measurement process ; even so , it ’s commonly used as the first tone in a unconscious process that terminate in rearward osmosis .
This was because of the nature of the chemical substance outgrowth , there ’s a room access of atomic number 20 and atomic number 12 impurity below which this procedure is n’t good .
Municipal Transitions and Salinity Concerns
Many municipality are offer program to supervene upon atomic number 11 hydrogen carbonate body of water handling system with more vim effective ( and environmentally well-disposed ) rearward osmosis system .
The main complaint are that the remnant termination of the atomic number 11 hydrogen carbonate summons is a draw of unthaw atomic number 11 , which leach Cl atom from PVC organ pipe and make a saltiness - weewee waste product flow rate that increase municipal pee price .
