Concepts / Systems

A Recirculating Aquaculture System (RAS) is a closed-loop system that is designed to grow aquatic organisms in a controlled environment. The key components of an RAS system include tanks, filtration systems, aeration equipment, and a recirculating mechanism that work together to maintain water quality and provide optimal growing conditions for the cultured species.

When designing an RAS system, several factors must be taken into consideration, including water chemistry parameters such as temperature, pH, and dissolved oxygen, flow rate, and the specific requirements of the species being cultured. To ensure the robust health and well-being of the organisms, the RAS design must also include disease prevention measures, stress mitigation strategies, and growth promotion techniques.

 


 

The AP RAS design portfolio provides customized solutions for growing aquatic organisms in controlled environments.

In the past, like the rest of the industry, we used to design facilities specifically for each client. However, we now recognize that the industry has progressed to a new phase. Creating unique designs leads to prototypes with inherent risks and challenges. As the industry becomes more professional, there is a greater demand for proven second and third-generation designs.

 

In light of this perspective, Aqua-Partners ApS has shifted its focus to designing and optimizing a few standard designs that are suitable for modular expansion. One such example is the RAS2020 technology, which has several advantages over alternative technologies, including:

 

  • The blueprint /area required per ton of production capacity is significantly reduced compared to alternative technologies.
  • The welfare of the fish is greatly improved compared to growing them in standard circular tanks.
  • Fish handling, transport, and grading is made simpler and centralized with a short distance between the fish tanks and grading station, leading to reduced stress on the fish and decreased labor effort.
  • The design is suitable for modular expansion into large-scale production, with the potential for up to 30,000 tons or more of annual production at each site.

 

At Aqua-Partners ApS, we have advanced our technology to the third generation, specifically optimized for the production of Steelhead Salmon (RAS Model 5). Meanwhile, Veolia (link) has also developed a third-generation technology for Atlantic salmon.

To avoid confusion with Veolia's version, we have agreed with Veolia to name our third-generation of the RAS2020 as "RAS Model 5" (Protected trademark).

As a result of this strategy, Aqua-Partners ApS will only offer a limited number of RAS grow-out technologies for a limited number of fish species.

 



Concepts offered by Aqua-Partners for RAS production:

 

1. RAS Model 5 for Yellowtail Kingfish and Steelhead Salmon cultivation, capacity of 1500 tons per year per Module, from 100 g to 3.5 kg. * Subject to certain conditions

2. Integrated concept for grouper production, 400-2000 tons annually, from 5 g to desired market size.

3. Soon to offer RAS Model 6 for Atlantic Salmon, Steelhead Salmon, Barramundi, and Groupers, with a capacity of 2000 tons per year, from 100 g to market size.

 


 

In addition, we can offer proven design for:

1. Marine Hatchery    

2. Marine Nursery   

3. Broodstock facilities for some marine species. Including / experiences with: Turbot, Cod, Yellowtail Kingfish, some Tuna species

4. Hatchery /nursery production systems for Atlantic salmon and Steelhead Salmon from egg incubation and up to 400 grams

 

Additionally, we provide comprehensive design services, including feasibility studies and commissioning.

 


 

Below is a comparative table of different growout systems part of our portfolio:

 

Dambrugs model (3)

RAS Model 4

RAS2020

RAS Model 5

RAS Model 6 (Dambrug)

Production capacity

Up to 200 tons per module

Preferable below 800 tons but Flexible

Up to 1200 tons per module

Up to 1800 tons per module

Up to 2000 tons per module

Optimised for Fish species

Trout

Atlantic Salmon
Steelhead Salmon

Atlantic Salmon
Steelhead Salmon
Kingfish

Steelhead Salmon
Kingfish

Steelhead Salmon
Atlantic Salmon

Groupers
Barramundi

Biofilter options

Semi fluidised

Fixed Fluidised bed or fluidised

Fluidised

Fluidised

Fixed Fluidised bed or fluidised

WTS Flow structure options

Single loop

Double loop

Parallel loop

Parallel loop

Double loop with option for parallel loop

Tank flow structure

Horizontal Homogen

Circular tank - horizontal plus vertical

Horizontal homogen

Horizontal homogen

Horizontal homogen

Advantages

-Easy and efficient for operation.
-Outdoor facility.

Old proven concept.

-Flow structure optimal for Salmonids.
-Small footprint.

-Flow structure optimal for Salmonids.
-Small footprint.

-Easy and efficient for operation.
- Flow structure optimal for Salmonids.
-Medium footprint.
-Relative Simple construction.
-Proven water treatment concept.

Disadvantages

Poor waterquality.
 Limited control on water parameters.
 Poor productivity per tank volume.
High mortality rates.

Flow structure in tanks not optimal.
Limiting densities.
Promotes growth variation.
 Large footprint

Complicated construction.

Complicated construction.

A new concept even if mainly based on the integration of proven technologies.

Concept development

Dansk Akvakultur DTU

General knowledge

Aqua-Partners ApS

Aqua-Partners ApS

Aqua-Partners ApS

Detail design and dimensioning

Dansk Akvakultur

Aqua-Partners ApS

Veolia

Aqua-Partners Aps

Aqua-Partners ApS

IP Ownership

None

None

Veolia

Veolia

Aqua-Partners ApS

IP protected

No

No

Yes

Yes

Yes

Technology /equipment supply

Various

Aqua-Partners ApS

Veolia

Aqua-Partners ApS

Aqua-Partners ApS

 

 

Aqua Partners Office

Videnparken
Vesterballevej 5
DK7000 Fredericia
Denmark

Start a Conversation

Tel: +45 60906071
Mail: mail@aqua-partners.dk

 

Copyright

Copyright © 2024 Aqua Partners. All Rights Reserved.