Research Article
Intergraded Applied Methodology for the Treatment of Heavy Polluted Waste Waters from Olive Oil Industries
Table 4
Percent COD removal efficiency results of the factorial experiment.
| Trial | | | | | % COD efficiency in OMW-DF | % COD efficiency in OMW-DL | % COD efficiency in OMW-DP |
| (1) | + | + | + | + | 67.06 | 64.90 | 63.65 | (2) |
−
| + | + | + | 60.14 | 60.92 | 59.75 | (3) | + |
−
| + | + | 67.68 | 65.52 | 64.26 | (4) |
−
|
−
| + | + | 54.67 | 55.38 | 54.32 | (5) | + | + |
−
| + | 64.37 | 65.21 | 63.95 | (6) |
−
| + |
−
| + | 61.37 | 62.17 | 60.97 | (7) | + |
−
|
−
| + | 65.53 | 66.38 | 65.10 | (8) |
−
|
−
|
−
| + | 69.53 | 70.39 | 68.10 | (9) | + | + | + |
−
| 69.37 | 68.22 | 64.95 | (10) |
−
| + | + |
−
| 63.76 | 64.58 | 63.34 | (11) | + |
−
| + |
−
| 64.83 | 65.68 | 64.41 | (12) |
−
|
−
| + |
−
| 62.99 | 63.80 | 62.58 | (13) | + | + |
−
|
−
| 64.99 | 65.83 | 64.57 | (14) |
−
| + |
−
|
−
| 61.83 | 62.63 | 61.43 | (15) | + |
−
|
−
|
−
| 66.45 | 67.31 | 66.02 | (16) |
−
|
−
|
−
|
−
| 64.30 | 65.13 | 63.88 | (17) | 0 | 0 | 0 | 0 | 63.37 | 64.19 | 62.96 | (18) | 0 | 0 | 0 | 0 | 63.91 | 64.74 | 63.50 | (19) | 0 | 0 | 0 | 0 | 63.68 | 64.51 | 63.27 | (20) | 0 | 0 | 0 | 0 | 64.37 | 65.21 | 63.95 |
|
|
COD: chemical oxygen demand.
|