1. Different technologies for producing Algae
Batch and continuous production methods
Live food aquaculture training course

2. Live food aquaculture training course
Main culture systems
Batch culture
300 or 500 litre sacs
D-ended tanks
Continuous culture
Connected sac system (SeaSalter)
Tubular fence (BioFence)
Tubular spiral (AddaVita)
heterotrophic production (Aqua Fauna)
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3. Live food aquaculture training course
Batch Culture
Indoors Greenhouse
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4. Live food aquaculture training course
Tank culture
Advantages - large volumes
Disadvantages - weak culture, prone to contamination
Small tanks large tanks
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5. SeaSalter System Continuous Algal Production, Systems, SeaCAPS
Adapted batch culture technique
Plastic Sacs connected together
dosing pump water and nutrient supply
overflow into common collector
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6. SeaSalter SeaCAPS water supply
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7. SeaSalter SeaCAPS algae collection
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8. Live food aquaculture training course
SeaSalter SeaCAPS
Equipment required
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9. Live food aquaculture training course
SeaSalter SeaCAPS
Water pasteurised before distribution
Nutrients and carbon dioxide are metered in continuously
All pipework is designed to be steam sterilised weekly
They can be installed
indoors,
in greenhouses (with or without supplementary lighting
outdoors under shade
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10. Live food aquaculture training course
SeaSalter SeaCAPS
Each 500 litre bag will yield litres of algae per day.
The expected production of a 40-bag unit would be 4-5 cubic metres per day of quality algae.
Cell density is dependent on light availability and required flow rates
draws less than 3kW of power excluding lights
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11. Live food aquaculture training course
SeaSalter SeaCAPS
Requires about 2 man-days per week are enough to run a 40-bag installation and take care of stock and starter cultures
500 Litre polythene bags are run for an average of four months and discarded before collapsing
A typical greenhouse-type installation with artificial illumination can attain a cell density of 4000 cells/microlitre.
Live food aquaculture training course

12. Live food aquaculture training course
SeaSalter SeaCAPS
MaxMar Mariscos, Laguna Manuela in Baja California
with a 12 bag layflat system to support their hatchery
to grow C. gigas and scallops.
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13. Live food aquaculture training course
SeaSalter SeaCAPS
lay flat bag systems outdoors which operate with no artificial light.
Live food aquaculture training course

14. Live food aquaculture training course
SeaSalter SeaCAPS
Norway
Scalpro AS produce scallops and oysters at Rong, near Bergen. Their upright system built into an old fish processing plant has been working since 1996
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15. Live food aquaculture training course
Tubular reactors
BioFence
Addavita
Why do we change from batch to continuous high density production?
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16. Live food aquaculture training course
Theory
In a tank or algal bag system, the zone of penetration is low. Once the cells move away from that surface then light cannot penetrate and photosynthesis ceases. However, this dark area allows more complex protein building to occur within the algae. Due to sacs diameter the ratio of light to dark area is small and so algal growth is limited.
Live food aquaculture training course

17. Transparent tubes, self-cleaning
Very tough, very clear food grade plastic tubes. 
They are self cleaning thanks to patented special cleaning beads that continuously circulate with the algae. This enables the system to be run for extended periods without culture crashes or cleaning.
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18. Space saving and reliable
Space saving - The tubes can be mounted vertically in a fence like arrangement or horizontally on the ground or at an angle on a roof. They take up a lot less room than other growing methods and of course, they are growing far more concentrated algae so even less space is required.
Reliable -Can operate for long periods before crashing, consistent quality of product.
Efficient - save on labour costs
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19. Ready prepared nutrients
There are two major sources of error in growing algae; preparation and contamination
ready made nutrients with complete formulation in sterile, concentrated liquid form 
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20. Live food aquaculture training course
BioFence
Clear pipe fence reactor
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21. Live food aquaculture training course
BioFence
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22. Live food aquaculture training course
BioFence Production
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23. Live food aquaculture training course
BioFence Production
Live food aquaculture training course

24. Live food aquaculture training course
BioFence Greenhouse
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25. Live food aquaculture training course
BioFence indoors
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26. Live food aquaculture training course
AddaVita
Clear pipe spiral reactor
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27. Live food aquaculture training course

28. Live food aquaculture training course
AddaVita reactor
Live food aquaculture training course

29. AddaVita outdoors and indoors
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30. Live food aquaculture training course
AddaVita controls
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31. Heterotrophic production
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32. Live food aquaculture training course
Boa photobioreactor
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33. Prism photobioreactor
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34. Tubular photobioreactor
Motor
Schematic
Diagram of
Tubular
Photobioreactor
Height
1.5m
Diameter
30 cm
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35. Tubular photobioreactor
Live food aquaculture training course