Modelling of Water Quality: An Application to a Water Treatment Process

Table 4

Variables selected for turbidity using multilayer perceptrons.

Round	Variables	Correlation coefficient (C)
1	Aluminium dose	0.56
2	Intake from the pikkala reservoir	0.66
3	Turbidity of raw water	0.70
4	Proportion of Lake Humaljärvi/Pikkala reservoir water intake	0.75
5	Water temperature	0.75
6	KMnO4 of raw water	0.76
7	Flocculation pH	0.77
8	Intake from Lake Humaljärvi	0.78
9	KMnO4 of raw water	0.76
10	pH of raw water	0.77