Biofilm control in aquaculture and RAS systems

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Biofilm control in aquaculture and RAS systems

In aquaculture and recirculating systems, biofilm, slime layer formation and microbiological build-up can occur on wet surfaces such as pipes, tanks, filters and return flows.

CWN assesses each installation to determine whether nano cavitation can contribute to more control over biofilm-sensitive zones, as an addition to existing filtration, biofiltration, UV, flushing or other water treatment.

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Why biofilm in aquaculture keeps returning

In aquaculture systems, water, organic load, feed residues, excretion, temperature, oxygen management and recirculation come together.

As a result, microorganisms can attach to wet surfaces and form biofilm there. This build-up can occur in pipes, tanks, basins, filters, silos and zones with less effective flow.

When conditions remain favourable, biofilm can return after cleaning or flushing. That is why it is important not only to address the visible problem, but also to look at the complete water circuit.

Nano-cavitatie in water

What CWN adds

CWN applies nano cavitation as an additional physical treatment within the water circuit. The application is tailored to system volume, flow rate, water load, existing filtration, biofilter, flow and critical zones.

  • More control over biofilm-sensitive zones in the water circuit
  • Less recurring microbiological build-up
  • Support for existing filtration, UV or flushing strategy
  • More stable water quality in recirculating systems
  • Technical assessment within existing aquaculture installations
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From recurring build-up to targeted control

Biofilm control in aquaculture requires more than cleaning or flushing alone. CWN looks at the complete water circuit and determines where additional physical treatment can technically contribute the most.

If CWN is suitable, we validate this with a pilot under practical operating conditions. This makes it visible whether nano cavitation contributes to less recurring build-up, more stable water quality and better control over biofilm-sensitive parts of your system.

Discuss your water system

Frequently asked questions about biofilm control in aquaculture

Short answers to frequently asked questions about biofilm, recirculation and the use of CWN Free and Tube.

Does CWN remove biofilm from pipes and tanks?

CWN is used to make microbiological pressure and system instability easier to control. The impact on biofilm depends on system design, hydraulics, water load, positioning and measurement strategy. That is why we assess this per installation.

Does CWN replace cleaning, flushing or existing filtration?

No. CWN is applied as an additional system technology. Cleaning, flushing, mechanical filtration, biofiltration, UV or other water treatment can each retain their own function within the system.

When is CWN relevant for biofilm problems?

CWN is particularly relevant when biofilm or slime layer formation returns after cleaning, pipes or tanks become contaminated, water quality fluctuates or corrective treatment is needed more frequently.

Where is CWN installed in biofilm-sensitive aquaculture systems?

That depends on the installation. Possible locations include tanks, basins, pipes, bypasses, return flows, silos or zones where organic load, recirculation and microbiological pressure come together.

How do we demonstrate the impact of CWN?

We define together in advance which goals are important for your installation. During a pilot, we monitor these through measurements and practical observations, for example water quality, microbiological load, contamination, biofilm-sensitive zones and system stability. This makes the contribution of CWN visible within your own RAS system.

Would you like to know whether CWN is suitable for your biofilm-sensitive aquaculture system? Based on system volume, flow rate, water load, existing filtration and measurement data, we assess whether a pilot is technically relevant.

Discuss your water system