dragon water group aquaculture 2

Your individual ocean.

Paradigm shift in marine AquacultureMade in Germany

: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

© Johannes Arlt

35 years experience in marine land-based recirculation systems

M a r in e f is h F a rmS y s t e m

RAS 1

RAS 2

RAS 3

RAS 4

S e a w a t e rTap water Sea salt

• farm-produced sea water

• water renewal rate <1% / day

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

- 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

C o n s t r u c t io n

Biofilter

Drum Filtration I

Drum Filtration II

Foam Fractionation

Fish Basin

Denitrification

Marine fish farm Völklingen

Research & Development

Biogas Plant

Fish Farm Fish Processing

Extension

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

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

Dissolved Nutrients

Particulate Nutrients

Dissolved Nutrients

Marine Artificial Recirculating Ecosystem

Sparus aurata

Nereis sp. Solieria sp.

Microalgae

Integration by phototrophic organisms

Seaweed Halophytes

Growth

Nutrient Uptake

Complexity

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

S u s t a in a b le P r o d u c t io n