Ion exchange is a special kind of solid adsorption process, it is formed by ion exchange agent in electrolyte solution.
General ion exchanger is a kind of solid granular substance does not dissolve in water, ion exchange resin.
It is able to learn some kind of cation or anion from the electrolyte solution, and transform itself contains another kind of symbols with the same charge equal to change out of ions, and release to the solution to this is the so-called ion exchange.
According to the types of exchange of ions, ion exchanger can be divided into cation exchanger and anion exchanger two kinds big.
Ion exchange a, electrolyte ions (first
Calcium, magnesium, iron, sodium, plasma)
Through a liquid membrane into the resin surface;
B, ions into the resin inside;
C, ion exchange;
D, H ion or OH ions resin to the external diffusion;
E and H ions or OH ions in water to form H2O.
Double bed is also called double bed, double bed is made of Yang and Yin of two different types of ion exchange switch series, such as strong acid cation exchange resin and strong basic anion exchange resin series.
This series of Yang and Yin bed equipment is called double bed, water after removal of positively charged ions (Yang bed first
Such as Ca2 +, magnesium 2 +, K +, Na +)
And the displacement of the H + ions into the water,
Then remove the negative ions in the water,
Such as SO2 -
, and OH - displacement
Ions into the water.
At the same time, the H + ions and OH -
Ions to form water, H2O, so as to achieve the effect of ion.
Mixed bed in the same switch, the anion and cation exchange resin according to certain proportion to fill volume, in the condition of mixing, anion and cation exchange, so as to remove the salt in the water, is called the mixed bed desalination processing.
Mixed bed of anion and cation exchange resin in the process of exchange, as it was in the mixing state, staggered, contact each other, can be thought of as consisting of lots of anion and cation exchange resin and the multistage compound bed, can be the equivalent of 1000 ~ 2000.
Because is evenly mixed, so, anion and cation exchange reaction is almost at the same time, the H + and OH -
Then synthesis of H2O, exchange reaction very thoroughly, high water quality.
System structure process before processing equipment (
Many medium filtration equipment, activated carbon filtration equipment)
+ ion exchange equipment = pure water, water treatment equipment co. , LTD. Is specialized in water treatment equipment, industrial equipment, such as pure uv water purifier
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