i

 Indicators

Weight Factor f_i

Valuation W_ki of the concepts A,B,C

1.
2.
3.
4.
5.
6.

7.
8.
9.
10.
11.

12.
13.
14.
15.

Economical

7,0
9,0
8,0
6,0
2,5
3,5

4,5
4,0
7,0
10,5
2,0

12,5
12,5
4,0
12,0

W_Ai

W_Bi

W_Ci

Investment costs
Operation costs
Water Consumption
Distance to Sanitation
Material requirements
Land requirements

5
4
1
5
4
5

4
3
4
4
4

4
1
4
1

3
3
5
5
3
3

4
4
4
4
2

3
4
3
4

4
3
4
1
3
4

4
4
4
4
2

4
2
3
4

Ecological

Energy consumptions
Odour nuisance
Disposal
Reuse
Slope

Social

Cost for users
Users Acceptance
Labour
Religious Acceptance

Result

∑ 105,0

3,19

3,73

3,40

Weighted Final Value E_j

Legend:
f_i High: important     k ϵ A,B,C      Wki   1-worse    E_j= ∑(W_ki*f_i)/∑f_i
   Low: unimportant    i= 1....15             5-well