Research Article
Modelling of Water Quality: An Application to a Water Treatment Process
Table 5
Variables selected for residual aluminium using multiple linear regression (MLR).
| Round | Variables | Correlation coefficient (C) |
| 1 | Water temperature | 0.72 | 2 | Aluminium dose/raw water KMnO4 | 0.79 | 3 | Silicates in raw water | 0.81 | 4 | pH of raw water | 0.81 | 5 | Hardness of raw water | 0.82 | 6 | Flocculation pH | 0.82 | 7 | Conductivity of raw water | 0.82 | 8 | Total intake of water | 0.82 | 9 | Surface level of Lake Humaljärvi | 0.82 | 10 | Colour of raw water | 0.82 |
|
|