Construction Technology of the Vacvina Biogas
Production Process
Input
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).
Biodigester
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.
Output
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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