Table 2 Dewatering assessment criteria, preference functions and weights for ranking by PROMETHEE

Unit

mg/L

mg/L

rpm

%

mL/s

mV

mm

%

AU$

Function Type^m

Usual

Usual

Usual

Usual

Usual

Usual

Linear

Usual

Usual

Usual

Usual

Usual

Usual

Maximized

FALSE

FALSE

FALSE

FALSE

FALSE

FALSE

FALSE

FALSE

FALSE

FALSE

FALSE

Minimized

TRUE

TRUE

TRUE

TRUE

FALSE

TRUE

FALSE

TRUE

TRUE

TRUE

TRUE

TRUE

TRUE

P

2

2

2

2

2

2

10

2

2

2

2

2

2

Q

1

1

1

1

1

1

5

1

1

1

1

1

1

S

1

1

1

1

1

1

1

1

1

1

1

1

1

Scale

(Numerical)

Very good (1) Good (2) Poor (3) Very poor (4)

(Numerical)

(Numerical)

(Numerical)

(Numerical)

(Numerical)

(Numerical)

Very good (1) Good-Very good (2)

Good (3) Poor-Good (4) Poor (5) Very poor (6)

(Numerical)

Very high (1) High (2) Medium-high (3) Medium (4) Low-medium (5) Low (6) Very low (7) None (8)

(Numerical)

(Numerical)

Weight

1

1

1

1

1

1

1

1

1

1

1

1

1