1.Description of Reverse osmosis mixed bed ion exchange system water treatment machine

Calcium and magnesium ions are atoms having a positive electrical charge, as do sodium and potassium ions. Ions of the same charge can be exchanged. In the ion exchange process,a granular substance(usually a resin)that is coated with sodium or potassium ions comes into contact with water containing calcium and magnesium ions. Two positively charged sodium or potassium ions are exchanged (released into the water) for every calcium or magnesium ion that is held by the resin. This "exchange or trade"happens because sodium or potassium are loosely held by the resin. In this way, calcium and magnesium ions responsible for hardness are removed from the water, held by the resin,and replaced by sodium or potassium ions in the water. This process makes water"soft".Eventually, a point is reached when very few sodium or potassium ions remain on the resin, thus no more calcium or magnesium ions can be removed from the incoming water. The resin at this point is said to be"exhausted"or"spent",and must be"recharged"or"regenerated".

Product Flow Chart

2.Flow chart of Reverse osmosis mixed bed ion exchange system water treatment machine

The following ions are widely found in raw waters:

Cations	Anions
Calcium (Ca2+)	Chloride (Cl-)
Magnesium (Mg2+)	Bicarbonate (HCO3-)
Sodium (Na+)	Nitrate (NO3-)
Potassium (K+)	Carbonate (CO32-)
Iron (Fe2+)	Sulfate (SO42-)

Ion exchanges can be unselective or have binding preferences for certain ions or classes of ions, depending on their chemical structure. This can be dependent on the size of the ions, their charge, or their structure. Typical examples of ions that can bind to ion exchangers are:

H+ (proton) and OH− (hydroxide)
Single-charged monatomic ions like Na+, K+, and Cl−
Double-charged monatomic ions like Ca2+ and Mg2+
Polyatomic inorganic ions like SO42− and PO43−
Organic bases, usually molecules containing the amine functional group -NR2H+
Organic acids, often molecules containing -COO− (carboxylic acid) functional groups
Biomolecules that can be ionized: amino acids, peptides, proteins, etc.
Along with absorption and adsorption, ion exchange is a form of sorption.

Ion exchange is a reversible process and the ion exchanger can be regenerated or loaded with desirable ions by washing with an excess of these ions.

Product Feature

3.Feature of Reverse osmosis mixed bed ion exchange system water treatment machine

1 Uses automatic control and semi-control .Pretreatment parts can adopt stainless steel material.

2 Protected when no power, poor power, larger electrical current, leakage, short circuit.

3 This water treatment system is compact, easy installation.

4 This water treatment system equipped with PLC and touch screen control;and remote login . This parts is optional.

5 Produce as per ISO and SGS standard and main parts accessories have obtained CE certification