Brackish Water Low Pressure Elements

Brackish Water Low Pressure Elements

Membrane Material: Composite Polyamide
Membrane Type Design: ORM32KM Spiral wound

Model Flow* Rejection Area Spacer
M3/hr GPD Normal**/minimal*** m2 ft2 mm mil
КН 8040-C1М1 1,81 11 500 99,4/99,2 39 420 0,72 28
КН 8040-C2М1 1,73 11 000 99,4/99,2 37 400 0,79 31
КН 8040-C3М1 1,66 10 500 99,4/99,2 35 375 0,86 34
КН 4040-C1М1 380 2400 99,4/99,2 8,0 86 0,72 28
КН 4040-C2М1 360 2100 99,4/99,2 37 400 0,79 31
КН 4040-C3М1 330 2300 99,4/99,2 35 375 0,86 34

 

Test Conditions (For KH 8040-C1M1): test solution of NaCl 1500 mg/l, P=1,55 MPa, T=25°C , pH=7,5. Recovery – 15%
Test Conditions (For KH 4040-C1M1): test solution of NaCl 1500 mg/l, P=1,55 MPa, T=25°C , pH=7,5. Recovery – 15%
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 0,9-1,2
Maximum operation pressure, MPa 4,1
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 (KH 8040-C1M1)
3.6 (KH 4040-C1M1)
Concentrate/permeate ratio on each element, min 5:1
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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