Membrane Material: Composite Polyamide
Membrane Type Design: ORM45K Spiral wound
Model
Flow*
Rejection
Area
Spacer
M3/hr
GPD
Normal**/minimal***
m2
ft2
mm
mil
KM 8040-C
1,66
10500
99,7/99,55
39
420
0,72
28
KM 8040-C2
1,50
9500
99,7/99,55
37
400
0,79
31
KM 8040-C3
1,42
9000
99,7/99,55
35
375
0,86
34
KM 4040-C
330
2100
99,7/99,4
8,0
86
0,72
28
Test Conditions (for KM 8040-C (2,3)): test solution of NaCl 32 g/l, P=5,5 MPa, T=25°C , pH=7,5. Recovery – 10%
Test Conditions (for KM 4040-C): test solution of NaCl 32 g/l, P=5,5 MPa, T=25°C , pH=7,5. Recovery – 8%
Nominal rejection is reached after 48 hours of continuous operation on test solution.
Minimal rejection of a new element after 20 minutes test on test solution.
Operating conditions and technical data for designing:
Recommended operation pressure, MPa
4,5-6,5
Maximum operation pressure, MPa
7
Maximum pressure drop, MPa
0 ,1
Operation temperature, 0 c 11
4-45
pH at continuous operation at T<35°C
2-11
pH at continuous operation at T<45°C
3-10,5
Chemical cleaning, temperature, °C* ***
T<45
T<35
T<25
CIP pH (short time operation)
2-11
1-13
1-13
Free chlorine content, mg/I max
0,1
Maximum feed flow, m3/hr
17 (KM 8040-C (2,3))
3,6 (KM 4040-C)
Concentrate/permeate ratio on each element, min
10:1
SDI (15 minutes test), max
5
Turbidity, NTU max
1
During continuous work with pH over 10,5 the temperature must not exceed 35°С 2) Flow of each element in a batch may vary +/-15%
