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Standart membrane element KM 4040-C



Sea and highly mineralized water up to 35 g/l

Model A, mm B, mm B' (ATD), mm C, mm D, mm Weight, kg
KM 4040-C 1016.00 100.00 0.00 19.10 26.70 4.00

Product description

Membrane material Composite polyamide
Membrane type ОРМ45К
Design Spiral wound
Application Sea water desalination


Model Flux, GPD Rejection, % Area Spacer
m2 ft2 mm mil
KM 4040-C 2 100 99.70 / 99.40 8.00 86.00 0.71 28.00

TEST CONDITIONS: 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, С1 4-45
рН at operation1 2-11
рН at chemical cleaning (short time operation) 2-11;1-11,5;1-12
Concentrate/permeate ratio on each element, min 10:1
SDI (15 minutes test), max 5
Turbidity, NTU max 1
Free chlorine content, mg/l max 0,1
Maximum feed flow, m3/hr 3,6
Chemical washing, T T≤45;Т≤35;Т≤25
1) During continuous work with pH over 10 the temperature must not exceed 35 C 2) Flow of each element in a batch may vary +/- 20%