5
Water quality:
!
The raw water, which will be treated in the RO-unit, must be of drinking water
quality and must not contain more than up to 1000 mg/l TDS as CACO
3
.
In addition to this the raw water must not exceed these limit values for chemi-
cal substances:
Fe: 0,05 mg/l
Mg: 0,02 mg/l
Chlorine, free: 0,1 mg/l
NTU, max: 1,0
Silt index SDI: < 3,0
Temp. Max: 25
o
C
KmnO4, max: 10,0 mg/l
Water pressure: 2
– 7 bar
In case of doubts about the chemical substances of the raw water a water
analysis must be performed.
The raw water is of drinking water quality
The feed water to the RO-unit does not exceed the limit values above.