Download - Dragon Water Group Aquaculture 2
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Your individual ocean.
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Paradigm shift in marine AquacultureMade in Germany
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:O u r Vis io n
• land-based production of seafish and marine organisms
• securing food chain for civilisation out of a biosecure environment
• sustainable and environment-friendly production
• rapid reactivity to shifts of the market
• profit maximization by high quality
• water and nutrient recycling
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© Johannes Arlt
35 years experience in marine land-based recirculation systems
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M a r in e f is h F a rmS y s t e m
RAS 1
RAS 2
RAS 3
RAS 4
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S e a w a t e rTap water Sea salt
• farm-produced sea water
• water renewal rate <1% / day
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Wa t e r t r e a t m e n t o n H ig h e s t S t a n d a r d
50 m³/h
F is h b a s in s Water volume 1500m³
Drum Filtration I
Skimmer & Ozonation
Biological Nitritification
Biological Denitrification
Drum Filtration II
4500 m³/h 1500 m³/h
4500 m³/h
4500 m³/h4500 m³/h
Primary water cycle
Water recycling
Secondary water cycle
10 m³/h 2 m³/h 10 m³/h
Sludge haul-off
Sludge thickening
4 m³/d 2 m³/d1 m³/d
7 m³/d
SludgeSewage2 m³/d5 m³/d
Discharge
Biogas
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- Tw o s t a g e s o lid s e p a r a t io n
Process waterSludge Foam
Drum Filtration
Foam Fractionation
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C o n s t r u c t io n
Biofilter
Drum Filtration I
Drum Filtration II
Foam Fractionation
Fish Basin
Denitrification
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Marine fish farm Völklingen
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Research & Development
Biogas Plant
Fish Farm Fish Processing
Extension
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Integrated aquaculture
A lg a e
P la n t s
F is h
Dissolved Nutrients
P a r t ic u l a t e
N u t r ie nt s
P o w e r &
H e a t
Energy Recycling Nutrient Recycling
In v e r t e b r a t e
B a c t e r ia
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Source of Data
Growth [g DW / m² / d]
Nitrogen Uptake [g N /
m² / d]
Literature 40 - 100 3,0 - 7,5
Microalgae own studies* 16 - 71 1,2 - 5,3
Literature 6 - 100 0,7 - 6,0
Seaweed own studies* 1 - 24 0,6 - 1,5
Literature 1 - 7 0,03 - 0,2
Halophytes own studies 1 - 17 0,03 - 0,5* artificial light
Integration by phototrophic organisms
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Dissolved Nutrients
Particulate Nutrients
Dissolved Nutrients
Marine Artificial Recirculating Ecosystem
Sparus aurata
Nereis sp. Solieria sp.
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Microalgae
Integration by phototrophic organisms
Seaweed Halophytes
Growth
Nutrient Uptake
Complexity
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Water renewal costs
[€ per year]
Saving rate
[%]
Reduction of costs
[€ per year]
Sea salt 196.224 € 80% 156.979 €
Tap water 63.072 € 70% 44.150 €
Sewage 117.734 € 100% 117.734 €
Total 377.030 € 85% 318.864 €
Recycling of discharge water*
* Calculations are based on a water renewal rate of 1% of the systems volume per day
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S u s t a in a b le P r o d u c t io n