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Table 4

Summary of system performance for all six systems

Pure water permeate flow rate
Permeate properties
TotalNSECtfouling
NewAfter useFlow rate at the startFlow rate at the endTDS at endTotal
SystemL/hL/hL/hL/hppmflow Lrecovery %kWh/m3nm
Ia 20.06 11.59 19.60 9.10 21 790 87.05 0.194 8.99 
II 18.63 13.22 19.50 13.60 1,500 88.21 0.747 6.47 
IIIa 17.50 10.10 16.77 7.40 13 510 96.30 1.866 34.31 
IV 20.19 14.30 20.45 13.85 32 1,500 82.88 0.183 5.40 
Va 18.00 12.43 16.34 9.04 30 1,503 84.23 0.533 4.66 
VI 18.20 14.25 14.55 11.16 25 1,450 89.53 0.577 3.79 
Pure water permeate flow rate
Permeate properties
TotalNSECtfouling
NewAfter useFlow rate at the startFlow rate at the endTDS at endTotal
SystemL/hL/hL/hL/hppmflow Lrecovery %kWh/m3nm
Ia 20.06 11.59 19.60 9.10 21 790 87.05 0.194 8.99 
II 18.63 13.22 19.50 13.60 1,500 88.21 0.747 6.47 
IIIa 17.50 10.10 16.77 7.40 13 510 96.30 1.866 34.31 
IV 20.19 14.30 20.45 13.85 32 1,500 82.88 0.183 5.40 
Va 18.00 12.43 16.34 9.04 30 1,503 84.23 0.533 4.66 
VI 18.20 14.25 14.55 11.16 25 1,450 89.53 0.577 3.79 

New membrane thickness = 140.5 μm.

Total recovery % = Total permeate flow *100/Total feed flow.

aSystem final condition is concluded as failed either due to insufficient product flow rate or high permeate TDS.

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