i

 Indicators

Weight Factor fi

Valuation Wki 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

WAi

WBi

WCi

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 Ej

 

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

Table 3: Valuation of proposed concepts A, B, C.