EDI module high pure water reverse osmosis ultra-pure water

Water inlet requirements:

Project: Technical requirements

Feed water: RO yield water, conductivity ≤20 s/cm (recommended <10 s/cm)

PH value: 6.0 ~ 9.0 (recommended 7.0 ~ 9.0)

Water temperature: 5 ~ 35℃

Hardness :(CaCO3)< 0.5 PPM

Organic matter: < 0.5 PPM, TOC recommended value is zero

Oxide: ≤0.05 PPM (Cl2), 0.02 PPM (O3), both of which are zero optimal

Fe, Mn: ≤0.01 PPM

Silicon dioxide: < 0.5 PPM

Carbon dioxide: < 5 PPM

Tap water often contains sodium, calcium, magnesium, chlorine, nitrate, 

silicon and other dissolved salts. These salts are composed of negative 

ions (negative ions) and positive ions (positive ions). Reverse osmosis 

can remove more than 99% of the ions. Tap water also contains trace 

amounts of metals, dissolved gases (such as CO2) and other weakly 

ionized compounds (such as silicon and boron) that must be removed 

in industrial processes.

RO reverse osmosis water (EDI), the water is generally 60-40 mu/cm 

(conductivity), according to different needs, ultrapure water or deionized

 water resistance is generally 2 to 18 m Ω microns.

The exchange reaction takes place in the module's pure chemical chamber,

 where anion exchange resins exchange their oxyhydrogen with ions (OH-)

 to exchange the negative ions in dissolved salts (e.g., C1 chloride). Accordingly,

 cation exchange resins exchange cations (such as Na+) in dissolved salts with 

their hydrogen ions (H+)