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|SourceLanguage=fr | |SourceLanguage=fr | ||
|Language=en | |Language=en | ||
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|Introduction=The construction of a family culture pond makes it possible to produce a large quantity of spirulina in a relative small space. For an ideal production the culture pond must be 20 cm in depth. With less than 20 cm, the pool is not fully exploited, whereas with more spirulina is not sufficiently exposed to light, the production is slowed down. The French Spirulina Federation recommends a consumption of 50 grams a day. It takes 1 m² of pond to produce these 50 grams of micro-algae on a daily basis. The size of the pool is to be adapted according to the number of people wishing to consume spirulina every day. | |Introduction=The construction of a family culture pond makes it possible to produce a large quantity of spirulina in a relative small space. For an ideal production the culture pond must be 20 cm in depth. With less than 20 cm, the pool is not fully exploited, whereas with more spirulina is not sufficiently exposed to light, the production is slowed down. The French Spirulina Federation recommends a consumption of 50 grams a day. It takes 1 m² of pond to produce these 50 grams of micro-algae on a daily basis. The size of the pool is to be adapted according to the number of people wishing to consume spirulina every day. | ||
In our case, we are three, so we will build a pool of 3 m². | In our case, we are three, so we will build a pool of 3 m². | ||
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See the video [https://youtu.be/kk7um3d8MyQ here] and [http://lab.lowtechlab.org/index.php?title=Culture_de_la_spiruline spirulina culture]. | See the video [https://youtu.be/kk7um3d8MyQ here] and [http://lab.lowtechlab.org/index.php?title=Culture_de_la_spiruline spirulina culture]. | ||
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|VideoType=Youtube | |VideoType=Youtube | ||
|VideoURLYoutube=https://www.youtube.com/watch?v=kk7um3d8MyQ | |VideoURLYoutube=https://www.youtube.com/watch?v=kk7um3d8MyQ | ||
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|Material=* 50 to 100 mm long wood screws | |Material=* 50 to 100 mm long wood screws | ||
* 18mm lath | * 18mm lath | ||
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* Silicone gun | * Silicone gun | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_chassis_bas.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_chassis_bas.jpg | ||
|Step_Title=Pond support structure: low frame | |Step_Title=Pond support structure: low frame | ||
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* Add two half-rafter stiffeners, one at 1 m, the other at 2 m lengthwise. | * Add two half-rafter stiffeners, one at 1 m, the other at 2 m lengthwise. | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_jambes.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_jambes.jpg | ||
|Step_Picture_01=Bassin_de_culture_de_spiruline_jambes_2.jpg | |Step_Picture_01=Bassin_de_culture_de_spiruline_jambes_2.jpg | ||
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* Place a bracket about 30 cm between each center leg and its bottom frame stiffener, four in total. | * Place a bracket about 30 cm between each center leg and its bottom frame stiffener, four in total. | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_chassis_haut.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_chassis_haut.jpg | ||
|Step_Picture_01=Bassin_de_culture_de_spiruline_chassis_haut_2.jpg | |Step_Picture_01=Bassin_de_culture_de_spiruline_chassis_haut_2.jpg | ||
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* Place a bracket of about 30 cm in each corner of the top frame. | * Place a bracket of about 30 cm in each corner of the top frame. | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_plancher_1.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_plancher_1.jpg | ||
|Step_Picture_01=Bassin_de_culture_de_spiruline_plancher_2.jpg | |Step_Picture_01=Bassin_de_culture_de_spiruline_plancher_2.jpg | ||
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The raising of the pond is finished. | The raising of the pond is finished. | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_bassin_1.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_bassin_1.jpg | ||
|Step_Picture_01=Bassin_de_culture_de_spiruline_bassin_2.jpg | |Step_Picture_01=Bassin_de_culture_de_spiruline_bassin_2.jpg | ||
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'''HINT''' '' Add straw, wool, newspaper or cardboard between the two frames to insulate even better. '' | '''HINT''' '' Add straw, wool, newspaper or cardboard between the two frames to insulate even better. '' | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_capot_2.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_capot_2.jpg | ||
|Step_Picture_01=Bassin_de_culture_de_spiruline_capot.jpg | |Step_Picture_01=Bassin_de_culture_de_spiruline_capot.jpg | ||
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* Set the hood aside to proceed to the isolation and sealing steps. | * Set the hood aside to proceed to the isolation and sealing steps. | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_isolation.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_isolation.jpg | ||
|Step_Title=Insulation | |Step_Title=Insulation | ||
|Step_Content=* Put two or three cardboard layers on the floor inside the pond. | |Step_Content=* Put two or three cardboard layers on the floor inside the pond. | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_geot.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_geot.jpg | ||
|Step_Picture_01=Bassin_de_culture_de_spiruline_geot_2.jpg | |Step_Picture_01=Bassin_de_culture_de_spiruline_geot_2.jpg | ||
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* Cut the over-lengths of tarpaulin to 2 cm from the top of the basin, | * Cut the over-lengths of tarpaulin to 2 cm from the top of the basin, | ||
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|Step_Picture_00=Bassin_de_culture_de_spiruline_charni_re.jpg | |Step_Picture_00=Bassin_de_culture_de_spiruline_charni_re.jpg | ||
|Step_Picture_01=Bassin_de_culture_de_spiruline_couronne.jpg | |Step_Picture_01=Bassin_de_culture_de_spiruline_couronne.jpg | ||
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The pond is done ! Now prepare the culture medium, install an aquarium pump and then sow the spirulina. | The pond is done ! Now prepare the culture medium, install an aquarium pump and then sow the spirulina. | ||
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|Notes=For more informations on the family spirulina culture : | |Notes=For more informations on the family spirulina culture : | ||
[http://lab.lowtechlab.org/index.php?title=Culture_de_la_spiruline The tutorial] | [http://lab.lowtechlab.org/index.php?title=Culture_de_la_spiruline The tutorial] | ||
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* Documentation made by Amandine Garnier, Camille Duband & Clément Chabot, Aug 2017 | * Documentation made by Amandine Garnier, Camille Duband & Clément Chabot, Aug 2017 | ||
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|Complete=Yes | |Complete=Yes | ||
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Tutorial de Low-tech Lab | Catégories : Habitat, Alimentation
Building of a spirulina-growing raised pond
Building of a spirulina-growing raised pond
bassin, spiruline, culture, domestique, ergonomie, Low-tech Tour France, Low-tech Lab France en fr 1
The construction of a family culture pond makes it possible to produce a large quantity of spirulina in a relative small space. For an ideal production the culture pond must be 20 cm in depth. With less than 20 cm, the pool is not fully exploited, whereas with more spirulina is not sufficiently exposed to light, the production is slowed down. The French Spirulina Federation recommends a consumption of 50 grams a day. It takes 1 m² of pond to produce these 50 grams of micro-algae on a daily basis. The size of the pool is to be adapted according to the number of people wishing to consume spirulina every day. In our case, we are three, so we will build a pool of 3 m².
The pond presented in this tutorial is raised to allow to work standing, which is more comfortable. It also allows material to be stored under the basin. Starting at the "Culture pond" step offers a more economical and quick alternative.
This tutorial is done in collaboration with Enkidou Burtschell, specialist in bioclimatic eco-construction and state-certified spirulina producer.
See the video here and spirulina culture.
Youtube
For ergonomics, it is necessary to adjust the height of the basin to the worker's size. The basin is 30 centimeters high. In our case the bottom of the basin is one meter above the ground. When calculating the height of the legs, the thickness of the low and high frames must also be taken into account.
The top chassis is a copy of the bottom chassis.
TIP Start by screwing the half-chevrons on the corner legs and then on the central legs
The raising of the pond is finished.
For ergonomics, the front is lower than the bottom. 30 cm at the front, 40 at the back of the basin. To improve the production, we isolate the basin, it will keep the heat longer during the day, which is important for spirulina. In our case, an air gap between two planks isolates the culture.
ATTENTION For the inner frame, the screws must come from the inside and go outwards otherwise there is a risk of bursting the tarpaulin. HINT Add straw, wool, newspaper or cardboard between the two frames to insulate even better.
A translucent cover placed on the basin allows the culture medium's temperature to rise quickly in the morning and to keep its heat at night. A polycarbonate plate acts as a canopy. A film of greenhouse tarpaulin or food film prevents the contact between spirulina and polycarbonate whose health effects are not known.
A geotextile makes it possible to improve the insulation and especially to prevent the tarpaulin from being torn apart.
The pond is done ! Now prepare the culture medium, install an aquarium pump and then sow the spirulina.
For more informations on the family spirulina culture : The tutorial
For ponds construction :
For materials and products necessary to spirulina culture :
Other references :
Yes
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