The input to the biodigester comes through a ditch ( Fig. 2) attached through a siphon system, with a size of 0.2 x 0.4 x 0.3 m, connecting the wastes from the animal shed to the biodigester ( Fig. 3).
The biodigester is a rectangular structure with a volume capacity of over 5 m3 suited to an animal husbandry of five to six pig heads. It could be placed next to or below the animal shed.
The output of the biodigester goes through a PVC exhaust pipe with a diameter of 100-150 mm, and a vertical and horizontal length of 45 and 80 cm, respectively ( Fig. 4).
Biogas Waste Box
The biogas waste box is constructed next to the bio-digester. Rice straw is deposited into this box to become organic fertilizer.
Biogas Reservoir System
This biogas reservoir system ( Fig. 5) collects and stores gas from the biodigester for cooking. The system normally has two to three plastic bags with 17-20 mc. Each plastic bag has a capacity of 1.5-2 m3. The collected gas is then used as fuel for the kitchen stove ( Fig. 6).
Index of Images
Figure 1 General Diagram of the Vacvina Biogas
Figure 2 Ditch Where the Input to the Biodigester Comes through
Figure 3 Biodigester
Figure 4 PVC Pipe As Output System of the Biodigester
Figure 5 Biogas Reservoir System
Figure 6 Collected Gas Used As Fuel for the Kitchen Stove
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