Fish Industry & Aquaculture
Pumping Solutions for Fish & Aquaculture
Proven Aquaculture Solutions
Landia has supplied pumping solutions to the fish and aquaculture industry for more than 30 years, serving both RAS facilities and fish processing operations.
Our equipment is engineered for stable, continuous handling of waste products, sludge and fish silage.
Combined with long service life and professional global after-sales support, Landia ensures reliable operation and low total cost of ownership.
Unique Knife System. No Clogging.
Pumps that last.
The fish industry is tough on pumps. Liquids are aggressive, materials are demanding, and downtime costs money.
Landia pumps are built in stainless steel to handle harsh conditions and keep wear to a minimum.
An integrated knife system at the pump inlet cuts solids before they enter the pump, eliminating the risk of clogging.
The result is reliable performance, less maintenance, and uninterrupted production.
• Stainless steel pump components for long service life
• Resistant to low-pHliquids such as fish silage
• Integrated knife system
• No risk of clogging
• Less maintenance and downtime
Stainless Steel Pumps for Dry Installation.
Two types of pumps are available:
Close-coupled
MODEL: MPTKR-I
Motor sizes: 1.1 - 22.0 kW
Pump sizes: 65, 80 & 105 mm
Capacity: up to 300 m³/h
Head: up to 22 m
Material: AISI 316
Seals: Double mechanical seals
Long Shaft Pump
MODEL: MPTKLR-I
Motor sizes: 5.5 - 22.0 kW
Pump sizes: 80 & 105 mm
Capacity: up to 300 m³/h
Head: up to 22 m
Material: AISI 316
Seals: Double mechanical seals
Submersible Stainless Steel Pumps
Uniform Silage
MODEL: DGR-I
Designed for fish silage, the submersible DGR-I pump features an efficient knife system that breaks down fish waste to ensure consistent mixing and a homogeneous silage.
Motor sizes: 2.2-22.0 kW
Pump sizes: 65, 80 & 105 mm
Capacity: up to 300 m³/h
Head: up to 22 m
Material: AISI 316
Seals: Double mechanical seals
Bilge Pumps
MODEL: DG-I
All Landia bilge pumps feature an integrated knife system at the pump inlet.
Debris is cut before entering the pump, preventing clogging and ensuring reliable, uninterrupted pumping.
Less downtime keeps crews focused on fishing – not equipment issues.
Also available in stainless steel AISI 316.
Motor sizes: 2.2-22.0 kW
Pump sizes: 65, 80 & 105 mm
Capacity: up to 300 m³/h
Head: up to 22 m
Material: Cast iron
Seals: Double mechanical seals
Built to Mix. Designed to Last.
Mixing with no limits.
Landia offers one of the widest ranges of mixers and flowmakers in the industry, designed to suit a broad variety of processes and operating conditions.
One of the widest ranges of mixers and flowmakers
The extensive product program allows each solution to be matched precisely to the application.
With motor sizes from 1.1 kW to 30 kW and propeller diameters from 300 mm to 2500 mm, Landia mixers cover everything from light agitation to heavy-duty mixing.
Solutions are available for both new installations and retrofit projects.
• Motors from 1.1–30 kW
• Propellers from 300–2500 mm
• For mixing, agitation, and circulation
• Submersible or dry installation
Designed for demanding mixing in the fish industry and aquaculture.
Available for submersible or dry installation.
Submersible
MODEL: POPR-I 300
Motor sizes: 3.0-22.0 kW
Propeller rpm: 300 rpm
Material: AISI 316
Option: Explosion-proof motor
Side-entry Mixer
MODEL: POPTR-I
Motor sizes: 3.0-22.0 kW
Propeller rpm: 300 rpm
Material: AISI 316
Option: Explosion-proof motor
The Right Flow. Better Fish Welfare.
Flowmaker
MODEL: POPLR-I
Motor sizes:
Propeller diameter:
Propeller rpm:
Material:
RAS 2020 Grow-out Section.
In the grow-out phase, biomass and operational loads are at their highest.
RAS 2020 emphasizes stable operation, reliable water movement, and uniform water quality to ensure fish welfare and production security.
Landia flowmakers create smooth, steady water movement that keeps fish healthy and tanks clean – even at high stocking densities.
The standard highlights the need for robust, proven equipment with high uptime, easy maintenance, and materials that withstand seawater – and the lowest possible power consumption.
The POPLR-I is a low-speed flowmaker engineered for efficient circulation of large water volumes, delivering maximum flow with minimal power consumption.
Hygienisation – A Key Step in Sludge Treatment
In salmon farming, both offshore pens and onshore facilities generate organic sludge from uneaten feed, faeces and biofilm.
This sludge can be high in nutrients and solids, and must be handled carefully to avoid environmental impact and meet regulatory requirements.
When aquaculture sludge is used for biogas production or recycled as fertiliser, hygienisation is required to meet regulatory and biosecurity standards.
By integrating Landia hygienisation into the process line, aquaculture sludge can be transformed from a regulatory challenge into a valuable resource.
Fish Silage from Byproducts and Mortalities
Fresh Fish by-products
Why fish silage matters
Good biosecurity is essential for healthy and efficient aquaculture.
Dead fish and by-products must be removed quickly and handled safely to avoid the spread of disease.
By converting these materials into fish silage, the risk of infection is reduced while creating a stable and usable product.
• Reduces the risk of disease spread
• Improves biosecurity in aquaculture systems
• Converts waste into a stable and valuable product
• Allows safe storage and transport of organic material
What is fish silage used for?
Category 3: Category 2:
One integrated system from a single supplier
The PowerEnsiler is delivered as a complete Landia solution, with all critical components manufactured by Landia based on decades of experience with silage production and storage systems. This ensures full compatibility and clear responsibility throughout the project.
The system can be supplied with tanks in polyethylene (PE) or acid-resistant stainless steel AISI 316, including ATEX-approved configurations. Tank sizes from 1 m³ to 25 m³.
If the silage is intended for biogas production, a dedicated hygienisation solution is available.
Why this matters:
• One supplier, one responsibility
• Stainless steel or PE (polyethylene)
• Available in ATEX configuration
PowerEnsiler: Key Features
• Flexible filling via hopper, flange, or inspection hatch
• Integrated Landia chopper and knife system, no external grinders
• Available in PE or AISI 316, with ATEX-approved options
• Automatic acid dosing for stable pH and silage quality
• Direct flow ensures fast ensiling and consistently high silage quality
We also have References.
Fish Morts to Biogas
LOCATION: Scotland
Challenge
A Scottish anaerobic digestion operator wanted to introduce fish morts as a new feedstock. This required compliant pretreatment, ABP-approved pasteurisation and reliable transfer to the digester.
Solution
Landia delivered a complete turnkey system including:
• 10 m³ PowerEnsiler equipped with an 18.5 kW stainless steel chopper pump
• 8 m³ BioChop pasteuriser for heat treatment of the silage
• Full ABP compliance (70°C), veterinary approved
If you think we promise too much, here are some references from the fish industry.
The fish morts are macerated and continuously recirculated into a homogeneous purée, pasteurised, and safely pumped onward to the biogas digester.
Result
• Increased gas yields
• Stable and reliable handling of a difficult feedstock
• Single supplier responsible for design, installation and commissioning
This is an example of a hygienically safe method for disposing of dead fish from aquaculture, while at the same time demonstrating that they can ultimately be used for the production of renewable biogas.
Complete PowerEnsiler System
LOCATION: Norway
Challenge
A large Norwegian company required complete PowerEnsiler systems for two separate facilities. The solution needed to include full process control, safe acid dosing and reliable storage handling.
Solution
Landia delivered complete systems for both plants, including PEHD process and storage tanks, chopper pumps and integrated control systems.
Result
• Efficient and controlled ensiling process
• Safe and accurate acid dosing
• Reliable pumping and storage handling
First Plant
2.5 m³ PowerEnsiler in PEHD, including:
• 11.0 kW stainless steel chopper pump
• Acid dosing pump
• Complete control system
10 m³ PEHD storage tank, including:
• 5.5 kW stainless steel chopper pump
Second Plant
1.0 m³ PowerEnsiler, including:
• 5.5 kW stainless steel chopper pump with nozzle
• Acid dosing pump
• Integrated control system
10 m³ storage tank, including:
• 5.5 kW stainless steel chopper pump
Turning Carp Morts into Controlled Value
LOCATION: North Macedonia
Challenge
Solution
A land-based aquaculture facility in North Macedonia needed a reliable and hygienic method for handling dead carp and fish trimmings. The goal was to secure processing, controlled acidification and dependable storage – without operational risk.
Landia supplied a complete, integrated PowerEnsiler system designed for efficient maceration, precise acid dosing and stable transfer to storage. The fish material is macerated into a uniform silage, stabilised through controlled acid dosing and pumped safely to long-term storage.
1.0 m³ Stainless Steel PowerEnsiler, including:
• 7.5 kW stainless steel chopper pump
• Acid dosing pump
• Integrated control system
40 m³ PEHD storage tank, including:
• 11.0 kW stainless steel chopper pump
Result
• Safe and compliant handling of fish byproducts
• Reduced environmental risk
• Reliable, lowmaintenance operation
• One supplier responsible for the complete system
