Hesy Aquaculture is a specialist in the design and construction of intensive recirculation aquaculture systems (RAS) for fish farming. They have 30 years of experience and have delivered over 180 RAS systems worldwide for a variety of freshwater and saltwater fish species. Their turnkey systems include biological and technical start-up support, as well as management training. RAS is advantageous as it allows high density fish production using minimal water in a controlled environment, with benefits for water quality, disease control, and consistency of supply.

2. Providing good environment for fish farming
Intensive Recirculation Aquaculture Systems

3. HESY AQUACULTURE
•Specialist in design and turn-key delivery of intensive Re-circulation Aquaculture Systems (R.A.S)
• Private company with nearly 30 years of experience in the design and operation of intensive recirculation fish farms.
• Office and construction workplace based in Kwintsheul ( near The Hague), The Netherlands.
• Turn-key delivery 180 intensive Re-circulation Aquaculture Systems for 81 fish farms worldwide.
• Large variety of fresh- and saltwater systems installed in 32 different countries.
• Tailor made Systems produces in range starting from 2 ton/year.
• Training and education to all customers, which includes:
 Biological start up
 Technical start up
 Intake of fish and grading.
 Management support
 Management and operation manuals
The systems is suitable for nearly all fish species.
kwintsheul

4. What is intensive Recirculation Aquaculture?
Water to filtration
Tanks in various sizes, where fish is grown to consumption size.
Solids like uneaten feeds and faeces are
removed by the mechanical filtration.
Water to fish tanks
Bacteria consume the ammonia(NH4),which convert into
nitrogen (Co2) and is released into the atmosphere.
Re-oxygenate the cultured water to super saturated level.
UV ,ozone and upflow filtration to optimize the water quality.

5. Examples of Fresh water species farmed in HESY aquaculture systems
Sturgeon
Trout
Salmon (smolts)
Barramundi
Pike perch
Eel

6. Examples of Fresh water species farmed in HESY aquaculture systems
Tilapia
Cod
White fish
Carp
Ornamental fish
Catfish

7. Examples of marine species farmed in HESY aquaculture systems
Sea bass
Sea bream
Cobia
Turbot
Grouper
Yellow-tail Tuna

8. Exported to more than 30 countries

9. Why to establish intensive re-circulation fish farms?
Legislation
Worldwide the environment restrictions and climate change needs solutions.
R.A.S. has high production of quality fish on a relatively small area, since high density and a high growth
in the controlled environment.
Reduced risk of diseases ,monitoring control and low mortality rates
The water quality is treated to achieve the desired quality.
The effluent can be reduced to a minimum, and therefore be controlled.
Water consumption
R.A.S is the solution.
Over-fishing of waters, catch regulations or catch declining.
for R.A.S the regualtions are very clear.
In several countries water is a major problem while
there is a short of rain plus evaporation of water in
ponds and lakes,
In R.A.S the consumption of water is limited. Average
5% per day of total water volume
Quality
Climate
It might not always be possible to get all year round wild catch quality fish.
The consumer however demands all year round “quality fish”.
R.A.S you can deliver 365 days per year quality fish. Free of antibiotics with clear
”tracking label”
Polution
In some areas the optical water is wasted because of continues
pollution.
R.A.S is enviromental friendly, and water quality is under control
Land
In several countries the climate is too cold or too warm.
In R.A.S all parameters are controlled and fish is growing
in optimum conditions.
In relation to open culture; in R.A.S fish grows fast in a
relatively small area. Species can be grown outside the
natural habitat.

10. What are the disadvantages?
There are hardly any disadvantages.
To run a recirculation system one needs a start-up capital for :
 Building
 Installation
 Running costs.
Also in open systems there are those running costs but in a re-circulation system the costs
can be a higher.

11. VIRTA, Russian Karelia 18.000.000 trout fingerling production

12. Hesy aquaculture offers the following services!
Turn key
Project development
Based on the customers input on the specific required fish
species and production, in combination with our advice and
experience, Hesy Aquaculture can carry out full project
development.
Feasibility study
Hesy Aquaculture offers to supply a feasibility study.
Our policy is to keep the cost in this stage as low as possible , to
avoid unnecessary expenses.
We offer a 2 days visit, to discuss the possibilities with client
and gouvernement organizations.
And check the local markets in terms of market prices of the
selected species.
Lay out documentation
The following step is the lay out documentation.
Since each system is tailor made
We supply for each customer lay out documentation, so there
will be no misunderstanding in the equipment which will get
installed
 Detailed proposal with a fixed price for 1 year.
 Material list for the system elements.
Description of the system elements with flow schemas.
 Description of water treatment and waste water treatment.
 Basic floor plan of the farm and building
Cash-flow, all taken into consideration for your business plan.
Details of suppliers of good fish feed.
Training location and details of training/support program.
When the details are checked and agreed HESY will make a visit to
your site to discuss the project with all who are involved and to supply
all required information

13. Design + engineering design in 2D and 3D
Like mentioned in lay out documentation, a design is enclosed.
It contains a 2D floor plan, with construction details for filters
and basic building details.
A 3D view from several view points and a 3D video impression

14. Construction and implementation of fish farms
Building a fish farm needs careful planning from start till turn-key delivery. Hesy Aquaculture is known for its quality and ability to implement projects within the
agreed time-schedule.
Hesy Aquaculture has the skills and the experience to supply the entire turn-key project.
We have our own staff on-site for mounting and implementing of pipes and equipment, not like most of our competitors which are hiring external companies or
only supply equipment. This ensures that the plant will be delivered as complete and fully operational.
When the fish farm is completed and the plant is tested with water, an protocol of delivery will be signed after technical test of equipment and by approval of
commissioning.
Hereafter one year’s warranty on all materials and installations are given by Hesy Aquaculture starting immediately after commissioning.
All warranty work on materials and installations, if any, will be carried out under the responsibility of Hesy Aquaculture.

15. Examples of realized projects
Eel farm in Croatia
Pike Perch farm in Netherlands
Trout farm in Russia
White fish farm in Finland

16. Examples of realized projects
Sturgeon farm in Russia
Cobia farm in Caribbean
Catfish farm in Benin
Tilapia farm in Israel

17. Examples of realized projects
Eel farm in Lituania
Pike Perch farm in Bulgaria
Salmon Smolz farm in Chile
Sturgeon farm in the Netherlands

18. Process of fish farming
Hesy Aquaculture delivered so far 6 fish farms for Pike perch,
with a production range 75-120 ton/year
Pike Perch

19. Process of fish farming
Hesy Aquaculture delivered more than 25 eel farms, with a
production range 50-1000 ton/year
Eel

20. Process of fish farming
Hesy Aquaculture delivered more than 8 sturgeon/caviar
production facilities with a production range 50-800 ton/year
meat production and 1- 75 ton caviar
Sturgeon

21. Process of fish farming
Hesy Aquaculture delivered more than 10 production facilities
for marine species with a production range 50-300 ton/year.
For example turbot, Sole, sea bass, sea bream, Cobia.
Cobia

22. Fish processing

23. Hesy
Fishfarming of the future