Sea Water High Rejection

Sea Water High Rejection

Membrane Material: Composite Polyamide
Membrane Type Design: ORM45KM Spiral wound

Model Flow* Rejection Area Spacer
M3/hr GPD Normal**/minimal*** m2 ft2 mm mil
КМ 8040-С1М1 1,26 8000 99,8/99,6 39 420 0,72 28
КМ 8040-С2М1 1,20 7600 99,8/99,6 37 400 0,79 31
КМ 8040-С3М1 1,12 7100 99,8/99,6 35 375 0,86 34
КМ 4040-С1М1 270 1700 99,75/99,4 8,0 86 0,72 28

 

Test Conditions (for 8040-CM (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-C1M1): 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 1-132)
Free chlorine content, mg/I max 0,1
Maximum feed flow, m3/hr 17 (KM 8040-CM (2,3))

3,6 (KM 4040-C1M1)

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%. *In case of chemical cleaning with a solution pH exceeding 11,5 or at the temperature level more than 45°С please contact original manufacturer for consultation.


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