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| | = Overview - Description of the Technology<br/> = | | = Overview - Description of the Technology<br/> = |
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| − | At the moment [[Types of Biogas Digesters and Plants#Low-Cost Polyethylen Tube Digester|Low-Cost Polyethylene Tube Digesters]] in Bolivia have costs between 93, - € and 148, - €. To operate a digester, the producer has to charge it day to day with 20 kg of cow dung (or other animal dung), mixed with 60 liters of water. Once the digester starts its operation (between 30 to 60 days), it produces around 4 - 5 hours of biogas daily, for cooking or other applications like use of gas lamps. Furthermore the digester provides daily 80 liters of ecologic fertilizer, which helps to increase the production of agriculture. The digester system has a pressure between 15 cm - 20 cm of water column. | + | At the moment [[Types_of_Biogas_Digesters_and_Plants#Low-Cost_Polyethylen_Tube_Digester|Low-Cost Polyethylene Tube Digesters]] in Bolivia have costs between 93, - € and 148, - €. To operate a digester, the producer has to charge it day to day with 20 kg of cow dung (or other animal dung), mixed with 60 liters of water. Once the digester starts its operation (between 30 to 60 days), it produces around 4 - 5 hours of biogas daily, for cooking or other applications like use of gas lamps. Furthermore the digester provides daily 80 liters of ecologic fertilizer, which helps to increase the production of agriculture. The digester system has a pressure between 15 cm - 20 cm of water column. |
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| | <u><span>The household tube digesters possess a triple win situation:</span></u><br/> | | <u><span>The household tube digesters possess a triple win situation:</span></u><br/> |
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| | *'''In the ecological sense'''; the environment threat is reduced due to the decrease in the use of chemical fertilizers and organic waste exposures. Furthermore, it also helps with reduce the deforestation by consumption of firewood.<br/> | | *'''In the ecological sense'''; the environment threat is reduced due to the decrease in the use of chemical fertilizers and organic waste exposures. Furthermore, it also helps with reduce the deforestation by consumption of firewood.<br/> |
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| | <u>In order to reach the objective, GIZ provides the following support:</u><br/> | | <u>In order to reach the objective, GIZ provides the following support:</u><br/> |
| | *Technical advice for tube digester projects.<br/> | | *Technical advice for tube digester projects.<br/> |
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| | *Coordination and broadcast of the information of tube digesters, as a mean of contact with institutions interested in biogas and bio-fertilizer in Bolivia. | | *Coordination and broadcast of the information of tube digesters, as a mean of contact with institutions interested in biogas and bio-fertilizer in Bolivia. |
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| | [[File:Local Technicians Carabuco Bolivia.JPG|none|300px|Local Technicians Carabuco Bolivia.JPG|alt=Local Technicians Carabuco Bolivia.JPG]] | | [[File:Local Technicians Carabuco Bolivia.JPG|none|300px|Local Technicians Carabuco Bolivia.JPG|alt=Local Technicians Carabuco Bolivia.JPG]] |
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| | <br/> | | <br/> |
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| | = Further Information<br/> = | | = Further Information<br/> = |
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| | *[http://tallerbiogas.blogspot.com/ Biogas Blog - tube digester research in Bolivia] (spanish) | | *[http://tallerbiogas.blogspot.com/ Biogas Blog - tube digester research in Bolivia] (spanish) |
| − | *[[Experience with Polyethylene Biogas Digester (PBD) from some countries|Article: Experience with Polyethylene Biogas Digesters]] | + | *[[Experience with Polyethylene Biogas Digester (PBD)|Article: Experience with Polyethylene Biogas Digesters]] |
| | *[[:File:Fact sheet 01 2010 low-cost polyethylene tube digester altiplano bolivia.pdf|Fact Sheet Low-Cost Polyethylene Tube Digester Altiplano Bolivia - (3.000 - 4.500 m above sea level)]] | | *[[:File:Fact sheet 01 2010 low-cost polyethylene tube digester altiplano bolivia.pdf|Fact Sheet Low-Cost Polyethylene Tube Digester Altiplano Bolivia - (3.000 - 4.500 m above sea level)]] |
| | *[[:File:Fact sheet 01 2010 low-cost polyethylene tube digester valley bolivia.pdf|Fact Sheet Low-Cost Polyethylene Tube Digester Valley Bolivia - (2.000 - 3.000 m above sea level)]] | | *[[:File:Fact sheet 01 2010 low-cost polyethylene tube digester valley bolivia.pdf|Fact Sheet Low-Cost Polyethylene Tube Digester Valley Bolivia - (2.000 - 3.000 m above sea level)]] |
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| | *[[:File:Low cost polyethylene tube installation.pdf|Installation manual for Low Cost Polyethylene Tube Digesters]] | | *[[:File:Low cost polyethylene tube installation.pdf|Installation manual for Low Cost Polyethylene Tube Digesters]] |
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| | = <br/>References<br/> = | | = <br/>References<br/> = |
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| | <references /> | | <references /> |
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| − | <br/>[[Biogas|-> Back to "Biogas" section]]<br/> | + | <br/>[[Portal:Biogas|-> Back to "Biogas" section]]<br/> |
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| | [[Category:Biogas]] | | [[Category:Biogas]] |
| | [[Category:Bolivia]] | | [[Category:Bolivia]] |
Convert household tube digesters into an additional tool within the productive uses of families in the rural areas of Bolivia, in such a manner that the knowledge is transferred to local technicians.
To be able to work in different altitudes and climate zones, in Bolivia the Low-Cost Polyethylene Tube Digester was modified into three climate types.
The three implanted types are calculated for 4 - 5 hours of Biogas using per day. The digesters differ in size and protection of the system.
The biodigester for the Bolivian Altiplano (picture td7) is enclosed in a greenhouse of polyethylene (250 microns), supported by two lateral adobe walls of 40 cm thickness (figure 4) above the hole length of the trench. This lateral walls accumulate the heat of the greenhouse effect, that with freezing temperatures during winter nights, they maintain the digester in function, by the own high thermal inertia. So it is possible to realise the installation of a working digester in an altitude of more than 4.500 m about sea level.
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