Total solids in feed (mg/L) | FO membrane | MD membrane | ||||
Initial flux | Flux after 20 h | % Decline | Initial flux | Flux after 20 h | % Decline | |
2000 | 1.37 | 0.35 | 74.4% | 4.00 | 0.33 | 91.8% |
1000 | 1.71 | 0.78 | 54.5% | 4.08 | 1.13 | 72.2% |
400 | 2.07 | 1.63 | 21.0% | 4.10 | 1.83 | 55.3% |
200 | 2.37 | 1.88 | 20.5% | 3.90 | 2.17 | 44.5% |