Table 2 Comparison of UF designs for different reuse/recycling applications
Design parameters | IOCL Panipat | CPCL Chennai | WINGOC Goreangab |
|---|---|---|---|
Raw water (UF feed) | Pretreated secondary refinery effluent – industrial recycling | Pretreated secondary municipal effluent – industrial reuse | Pretreated secondary domestic effluent – potable reuse |
Membrane material | Hollow fiber polyethersulfone | Hollow fiber polyethersulfone | Hollow fiber polyethersulfone |
Design feed flow [m3/h] | 894 | 475 | 1000 |
Design gross flux [L/(m2∗h)] | 54 | 66 | 102 |
Design permeate flow [m3/h] | 760 | 428 | 850 |
Design net flux [L/(m2∗h)] | 46 | 59 | 87 |
Recovery [%] | 85 | 90 | 85 |
Skids | 6 (+1 standby) | 3 (+1 standby) | 5 (+1 standby) |
Pressure vessels/skid | 18 | 15 | 15 |
Vessels total | 108 | 45 | 70 |
Elements/vessel | 4 | 4 | 4 |
Elements total | 432 | 180 | 280 |
Membrane area/element [m2] | 38 | 40 | 35 |
Membrane area [m2] | 16,416 | 7200 | 9800 |
Average membrane life time [y] | 5–6 | 5–6 | 9 |