Nanobubble Technology

Water treatment with physics, not additives.

Chemical-free nanobubble systems engineered in Bergen — for aquaculture, wastewater and industrial water.

Explore Technology See how it works
80%+ Suspended Matter Removal
50%+ Turbidity Reduction
40%+ Oxygen Transfer Increase
Lower Energy Less Chemicals · More Sustainable

Our Solutions

One technology, many waters

From recirculating fish farms to municipal plants, NanoMAR delivers oxygen and clarity where it matters.

RAS & Aquaculture

Stable dissolved oxygen and healthier fish in recirculating systems.

Wastewater Treatment

Aerobic digestion supplied with oxygen, and lower sludge volumes.

Swimming Pools

Crystal-clear water with a fraction of the chlorine.

Industrial Water

Process and cooling water kept clean, chemical-free.

The Science

The tiniest changes make the biggest impacts

Nanobubbles are gas bubbles smaller than 200 nanometres — thousands of times smaller than the bubbles a conventional diffuser makes, and invisible to the eye. They stay suspended for days to weeks, carry a strong negative surface charge, and present an enormous gas–liquid interface, so gas dissolves into the water instead of escaping to the air.

  • Neutrally buoyant — they don't rise and pop
  • Negative surface charge attracts and lifts contaminants
  • Massive surface area for gas transfer
  • No additives, no by-products, no residue
How it works

Why NanoMAR

Engineered in Bergen, built for continuous duty

Chemical-free

Treat water with physics, not additives — safer for people, fish and the environment.

Energy-efficient

Near-complete gas transfer means oxygen dissolves instead of venting to air — lower energy operation.

Modular by design

Five models, from a portable laboratory unit to full industrial installations — configured to your flow.

Patented technology

Backed by water-purification research from the University of Bergen.

Industries

Industries we serve

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Aquaculture

Stable dissolved oxygen and lower pathogen pressure for RAS, land-based and sea farms — nothing dosed into the water.

Agriculture

Oxygen-rich irrigation water that reaches the root zone and keeps drip lines clear of biofilm.

Wastewater

Aeration that keeps more of the gas you buy in the water, and flotation that takes fine solids out of it.

Oil & Gas

Produced-water treatment and flotation enhancement.

Food Industry

Hygienic process water and effluent management.

Mining

Froth flotation and tailings water clarification.

Lakes & Ponds

Restore oxygen and fight algae in standing water.

Water Towers

Biofilm control and oxygen in cooling towers, buffer tanks and stored water — nothing dosed.

Desalination

Pre-treatment that keeps biofouling and organic load off reverse-osmosis membranes.

Blog

From the blog

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Ready to rethink your water?

Tell us about your process and we'll size a nanobubble system for it.

Talk to our team

What are nanobubbles?

A nanobubble is a gas-filled cavity in water smaller than 200 nanometres — thousands of times smaller than the bubbles a conventional diffuser makes. At that size a bubble stops behaving like a bubble. It does not rise and burst in seconds; it is effectively neutrally buoyant, so it stays suspended in the water for days or weeks, still carrying its gas.

Two properties follow, and between them they explain everything NanoMAR systems do. First, a vast combined gas–liquid interface means oxygen, air or ozone dissolves into the water almost completely instead of escaping to the atmosphere — the mechanism behind nanobubble aeration and gas infusion. Second, each bubble carries a strong negative surface charge, which lets it attach to and lift suspended solids, oils and the organic films that become biofilm.

That is why one platform covers duties that look unrelated: holding dissolved oxygen in a fish tank, clarifying a wastewater stream, keeping a membrane clean, floating fine particles in a flotation cell. It is the same physics each time, and since nothing is dosed in any of them, each one comes down to treating water without chemicals. The full explanation is on the nanobubble technology page.

Proven numbers: 80 % / 40 %

These are the figures NanoMAR publishes. They are stated as minimums, and they are the only performance numbers we quote outside a specific installation — anything beyond them belongs in a sizing conversation about your water, not on a web page.

80 %+
Suspended-matter removal
Charged bubbles attach to fine solids and float them
50 %+
Turbidity reduction
The visible consequence of the same mechanism
40 %+
Oxygen-transfer increase
Near-complete dissolution instead of gas lost to the air
Zero
Chemicals added
Nothing dosed, so no by-product to remove downstream

Engineered in Bergen, measured before it is claimed

NanoMAR was founded in Bergen in 2023 by Prof. Thorolf Magnesen, whose water-purification research at the University of Bergen underpins the technology, and Behnood Sjåstad Fathi, a water-quality engineer with more than six years delivering aquaculture water-treatment projects internationally. The company exists because those two things had to meet: the physics was well understood, and the equipment that would put it to work on a real site was not.

Being based on the Norwegian coast is not incidental. Land-based aquaculture, RAS and the water-quality standards that come with them are the hardest environment this technology has to work in, and it is on our doorstep. Systems are specified for continuous duty because that is what a fish farm needs, and the same engineering carries over to wastewater, irrigation and the other industrial water treatment duties we build for.

We publish what we can substantiate and nothing else, whether it goes in a datasheet or in what we write about nanobubbles and water treatment. Where a figure is not on this site, it is because it has not been measured on water like yours yet — which is exactly what a pilot is for. More about the people behind NanoMAR.

How a system fits into your plant

Nanobubble treatment is almost always added to a process rather than replacing one. Four things decide how straightforward that is.

  1. 01

    It goes on a side stream

    The unit is normally installed on a side stream of an existing pumped loop, so it can be isolated for service without stopping the process. That is also why a retrofit is usually a pipework question rather than a redesign.

  2. 02

    The gas decision comes first

    Oxygen, air or ozone is a process choice, not a machine setting. It determines the supply you need on site, and it frequently costs more than the generator itself.

  3. 03

    Sizing is an oxygen budget

    Capacity follows from the concentration you have to hold and the demand the process puts on it — not from tank volume. Warm water and peak load are the conditions to design against.

  4. 04

    Then it runs continuously

    Systems are specified for continuous duty because that is what a fish farm or a treatment plant needs. Nothing is dosed, so there is no consumable to reorder beyond the gas.

Is nanobubble treatment right for your water?

It is a good fit in some situations and a poor one in others. These are the signals worth acting on.

  • Yes, if you are holding dissolved oxygen against a biological load, fighting biofilm or algae, trying to reduce chemical dosing, or floating fine solids and oils out of a stream.
  • Yes, if your aeration is losing gas to the atmosphere — that loss is the inefficiency nanobubbles remove, and the running cost of aeration turns on how much of the gas actually goes into solution.
  • Probably not, if your problem is a dissolved contaminant that has to be removed rather than oxidised or floated. Nanobubbles change gas transfer and surface behaviour; they are not a filtration step.
  • Talk to us first, if your water carries heavy solids or is chemically aggressive. That does not rule the technology out, but it decides which separation stage is appropriate and how often it needs attention.

Start where your problem is

Nanobubble generators Types, sizing and what drives the cost. Aquaculture and RAS Dissolved oxygen, fish health and infection pressure. Wastewater treatment Aeration efficiency, sludge volume and odour. Cooling towers Biofilm and scale control without dosing. The five systems From a 2 lpm bench unit to a 1 000 m³/h membrane platform. Size your system Work out the oxygen budget before you ask for a quote.

FAQ

What is a nanobubble?

A nanobubble is a gas-filled cavity in water smaller than 200 nanometres. At that size it stops behaving like a bubble: it does not rise and burst in seconds but stays effectively neutrally buoyant, suspended for days to weeks, and it carries a strong negative zeta potential that lets it attach to and lift contaminants. NanoMAR generators produce nanobubbles from oxygen, air or ozone, which is why one platform covers aeration, disinfection and flotation.

Do nanobubbles really work without chemicals?

Yes — a NanoMAR system adds gas and nothing else, so no chemicals are dosed and there are no by-products or residues to handle downstream. The effect is physics rather than chemistry: an enormous combined gas–liquid interface drives near-complete gas transfer, and the negative surface charge on each bubble lifts suspended solids and oils out of the water. NanoMAR publishes 80 %+ suspended-matter removal and 50 %+ turbidity reduction on that basis. Where dosing is replaced, the chemical storage, handling and dosing equipment goes with it.

What does a nanobubble system cost?

NanoMAR publishes no list prices and quotes each installation separately. The same model lands at very different totals depending on flow, which gas the process needs and how that gas is supplied on site, which separation stage suits the water, and how the unit ties into existing pipework — a published figure would be wrong for almost everyone reading it. The nanobubble generator price page sets out the variables that move a quotation, and a sizing conversation turns them into a number for your plant.

Which industries is nanobubble treatment for?

NanoMAR works across nine industries: aquaculture, agriculture, wastewater, oil and gas, food industry, mining, lakes and ponds, water towers and desalination. They share a water problem that comes down to gas transfer or surface behaviour — holding dissolved oxygen against a biological load, controlling biofilm and algae, or floating fine solids and oils out of a stream. Each industry page states the duty, the published figures that apply to it and which of the five systems fits.

How do I know it will work on my water?

You run a pilot — NanoMAR has no publishable customer references, so we offer a measurement rather than a testimonial. A pilot begins with a baseline on your own sampling points, typically dissolved oxygen, turbidity and suspended solids, before a NanoMAR unit runs on a defined side stream and the same points are measured the same way. The raw data is yours. The portable NanOxy S2 at 2–50 lpm and the NanOxy M Pro at 10–100 m³/h exist for exactly this, and how we prove a result describes the sequence.