AQUAPONICS And Why you should consider decoupling MICHAEL JEUTNER JEUTNMIC@GMAIL.COM
CONTENTS Basics Decoupling Bachelor thesis Master thesis
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NITROGEN CYCLE Fish
Ammoni a
Nitrate
Toxic! Bacteria
Bacteria
Nitrite Toxic!
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RAS  RAS Re-circulated Aquaculture System  Exchange of less than 10% of the total water volume per day
Fish
Mechanical Filter
Sterilization
Biological Filter
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AQUAPONICS  Combination of Aquactultue and Hydroponics
-> Aquaponics
Fish
Hydroponics
Sterilization
Mechanical Filter
Biological Filter
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DECOUPLED SYSTEMS Fish
Mechanical Filter
Sterilization
Hydroponics
Biological Filter
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DRAPS Economisation Control Safety
• Steady production • Predictability • pH, °C, EC • Nutrient supplementation • Disease control • Hazard cushioning
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BACHELOR THESIS
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FILTER COMPARTMENT Sedimenter (retention time, flow rate) Total needed volume 267 L
Biofilter (feed input, aeration, fluidization) Total needed volume of biocarriers: 117 L Total needed volume 175 L
Efficiency increase
Rule of thumb: Volume * 1.5
Rule of thumb: 100m² surface aera / 1 kg feed
Sedimenter: 400 L Biofilter: 300L, 200 L media
1.5 times and 1.7 times
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LAYOUT
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pH 9
8
7
6
5 Oct. 7
Oct. 9
Oct. 10
Oct. 11
Oct. 12
Oct. 13
Oct. 14
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DO (mg/L) - 7 days 7
6
5
4
3
2
1
0 Oct. 7
Oct. 9
Oct. 10
Oct. 11
Oct. 12
Oct. 13
Oct. 14
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DO (mg/L) - daily flux 6
5
4
Feed input
3
2
1
0
10
12
14
16
18
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MASTERTHESIS
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EXPERIMENTS Fishmeal substitution in Clarias gariepinus
culture
Hermetia illucens meal
Implementation of an additional trophic
layer
Crayfish in aquaponics Solid waste implications 15
B
BSFL feed
A
Commercial feed
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RESULTS
CATFISH AVERAGE GROWTH 9% 29%
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CRAYFISH IN AQUAPONICS 25 compartments 12 x 22cm
E D C B A
1
2
3
4
5
111111111 122
CRAYFISH MEAN GROWTH
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CRAYFISH GROWTH BY CLUSTER
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CALORIMETRIC ANALYSIS Average 63%
Average 53%
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CALORIMETRIC ANALYSIS Average 37%
Average 33%
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DISCUSSION  Do you have any questions?
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