PPT Slide
Our Modest Needs...
Parameter
Typical Feedwater
Characteristics--Classic EDI
--Needs as Used in Recycle
Conductivity
< 40 uS/cm
? uS/cm
Hardness
?.25-1.0 ppm as CaCO3
N/A--No 'hardness' cations
TOC
?.5 ppm
? ppb
Pressure
20-50 psi.
Dial-in
Temperature
10 to 35
o
C
Keep it ?
o
C
pH
4 to 10
Tolerate ?
Chlorine
?.1 ppm
None
Fe, Mn, Sulfide
?.01 ppm
None/CMP*
CO2
? ppm
Highly variable, generally low
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