Table 4 Efficiency on economic aspect of the VICRAIZES system at typical household
No. | Content | Benefits (VND/year)a | Costs (VND/year)a |
|---|---|---|---|
1 | Suppy biogas instead of pieces of sedge mats (for burning dyeing pan) | 9,125,000 | 0 |
2 | Income gained from selling pigs | 675,000,000 | 0 |
3 | Food for feeding pigs | 0 | 270,000,000 |
4 | Manpower for livestock farm | 0 | 36,000,000 |
5 | Electricity, water use | 0 | 6,000,000 |
6 | Veterinary medicine | 0 | 24,000,000 |
7 | Breeding pigs | 0 | 162,000,000 |
8 | Breeding facility | 0 | 33,750,000 |
9 | Amortization of breeding facility | 0 | 1,100,000 |
10 | Biogas digester system | 0 | 14,000,000 |
11 | Wastewater treatment system | 0 | 21,000,000 |
12 | Amortization of Wastewater treatment system | 0 | 1,150,000 |
|  | Income = benefits − costs | 115,125,000 | |