Nano Bubble Oxidation Technology
Your water, better through a SeaBreather.
The first question a ministry asks is what leaves the outlet, and the second is where it goes. A mutually agreed definition of better water. Yours enters at the intake, crosses a closed reactor at flow, and comes straight back out into the water that fed it — released better than before.
The architecture
An intake, a reactor, an outlet.
The bay is where the plant goes. It is not where the chemistry happens. The water itself never leaves the bay.
Running the oxidation duty inside a reactor turns the whole question into an ordinary one. What a regulator is asked to permit is a discharge with a concentration on it, written down before the work starts and sampled at the outlet by us and by somebody who does not work for us. Every environment ministry on earth already knows how to write conditions for that. Gas is the input to the stage — oxygen carried aboard, ozone made from it on demand, and either dissolved directly or sheared fine enough in line with the flow to stay in suspension instead of surfacing as a wasted plume. The platform's technical page works that physics through at proper length.
Oxidation is what the fleet is built around, and it is not the only thing a program can bring. Coastal water is varied enough that some events want separation, or a stage running alongside the reactor, or capability we operate with a partner. What decides is the event in front of the crew and the condition the water has to be in afterward. Whatever gets selected answers to the same outlet figure, agreed with the authority that consents the work and read by the verifier watching it.
Contained is a word about the reaction, not about the water's schedule. A hull of this class is specified at roughly 5,000 gallons a minute, so water is moving through the reactor continuously and nothing is impounded on deck pending a signature. Anyone picturing a holding tank with a regulator standing over it has the wrong picture. What governs the pass instead is instrumentation acting in real time, an oversight body reading the same feeds live, and a client who can stop an active deployment outright.
The other half of that sentence deserves saying out loud, because leaving it unsaid is what created the confusion. There is no storage aboard at all. Your water is not gathered, not held and not taken anywhere: it enters, it is treated on the move, and it leaves at the outlet into the same body of water it was drawn from. What a program leaves behind is better water sitting where the stressed water was. Vessel systems come smaller and larger than this class and go where the water calls for them, and that stays true on every one of them.
Which puts weight on the intake, because a plant that treats what it draws is an intake before it is anything else. The protections there are designed rather than incidental, and the vessel page sets them out alongside the rest of the deck.
Sizing
Gas budgets are worked from the bottom of the reported band.
One figure does more commercial work in this sector than any other: the enhancement of the gas–liquid mass transfer coefficient against conventional bubbles for the same delivered gas volume. Work in Science of the Total Environment reports it rising roughly elevenfold; adjacent literature on similar systems reports factors from about one and a half to nine times.
Where a program sits inside that band changes the commercial shape of the thing. Sized on eleven, a hull holds a large area on a modest gas supply. Sized on two, the same water needs more gas, more hull-hours or a smaller zone. One of those survives an ordinary site and the other does not, so replenishment intervals and the area a hull can hold are planned from the conservative end.
Organic load
What an oxidation duty measurably does, and how it gets checked.
Where there is organic material in the water — bloom biomass, the dissolved carbon a decaying mat leaves behind — the reactor runs with an oxidant fraction in the blend. The work it does is measured by assay on the influent and on the effluent, a comparison anybody can repeat because both samples come from a pipe rather than a patch of sea. The background load decides how much of that work is available: oxidant is consumed by whatever is already dissolved before it reaches the material anyone was aiming at, so two basins with matching cell counts can need very different plans. It is measured on the day.
Verification is tiered, and what sets the tier is what the mission is carrying. On low-demand work the envelope has already been validated, the instruments read continuously, and samples go out to an independent laboratory on an agreed cadence. Put a toxin bloom or oxidative oil work through the same hull and the envelope tightens rather than the flow stopping: more conservative settings at the source, closer independent oversight, and interlocks that cut the oxidant or shut the intake before an out-of-specification discharge can form at all. Nothing waits on deck for an assay to clear it, because there is nowhere on deck to keep it. No turnaround exists that could clear every parcel of a continuous stream, and no operator should claim otherwise — so the control is placed where it can still act, which is upstream of the outlet rather than after it. A mission run to that envelope does not deliver the hull's full rate, and a client should hear that from us.
What all of that adds up to on a particular water body is what a calibration phase establishes, on a bounded area, against parameters agreed in writing before a hull moves.
NCCOS, September 2018
Ozone nanobubble aeration on an eight-acre pond near Fort Myers Beach. Algae eliminated within 48 hours, proper reoxygenation, no apparent harm to aquatic life. Another company's system, in fresh water, at pond scale.
NCCOS, July 2020
A commercial nanobubble ozone pump system for ship ballast water, effective against algae, bacteria and motile zooplankton, with no statistically significant adverse residual toxicity downstream. Another party's technology, under their own agreement.
Toxins
Toxicity disabled, rather than parked in your sediment.
Precipitation is a relocation. Anything that leaves solution and settles has become a benthic obligation, a dredging line and, in a shallow basin, a problem the next storm hands back. Work carried out with the NOAA scientist Dr Peter Moeller, under a Cooperative Research and Development Agreement whose term this company has since completed, established that the treatment neutralizes a toxin instead of dropping it out as a solid. Toxicity is taken apart on the way through the reactor, so nothing that stage does to a toxin arrives back later as a dredging line.
That is our own account of our own research, and it is past tense. There is no active CRADA. Dr Moeller continues as an adviser and as a check on what we claim, which is worth more to a reviewing scientist than an expired instrument would be. A CRADA was never a seal of approval anyway, and NOAA endorses no commercial product.
The original agreement was built around a single nanobubble generator we have moved past, so the work moved to laboratories with the equipment to test the next question of scale: Arizona State University, the Middle East Desalination Research Center and more. The documents behind a program sets out who did what.
Where oxidation stops
Four things this stage leaves alone.
Four boundaries that belong in a scope before anybody signs one.
- Dissolved metals. Nothing is taken out of your water here, metals included — the stage neutralizes rather than removes, which is true of every duty it runs. A hydroxyl radical does not destroy a metal, so what a pass changes is the organic chemistry bound to one: the species alters and the quantity leaving the outlet does not. It also means nothing is dropped onto your bed, which a precipitation answer cannot say.
- PFAS. No destruction claim is made for that class of compound anywhere in the network.
- Anything living on the bed. A system that treats the water it draws reaches what is suspended in that water. Attached and benthic organisms sit outside it.
- Complete mineralization. Organic contamination is broken down and the effluent verified against a functional endpoint. Reduction to carbon dioxide and water on one pass is a different promise.
The control regime
Bromate is governed by the limit that applies to your water.
Ozone in seawater is a different proposition from ozone in a lake. Bromide is abundant, ozone attacks it around eighty-three times more readily than chloride, and the hypobromite that results can carry on to bromate. That is chemistry rather than opinion, and it is the single strongest argument for keeping the reaction enclosed and instrumented instead of starting it in somebody's bay.
No fixed ceiling is published here, and that is deliberate. Any figure printed on a page reads as the standing commitment for every water body on earth, and the usual candidate comes from drinking-water practice — where a bay is not a public utility water stream, and holding open sea to a tap standard sounds rigorous while being the wrong test. Where treated water does reach a desalination intake, those plants already run equipment that handles bromate, so the case people worry about most is the one already engineered for. The governing limit is the limit that applies to that receiving water, settled case by case with the authority consenting the work and written into the service level agreement before a system is deployed.
Formation is conditional, and gets assessed per water body. Significant bromate needs a threshold of bromide present, which salt and brackish water do not always reach. Ozone also reacts indiscriminately, so bromide is competing for it against every other dissolved carbon molecule in the column. Two bays with the same salinity can behave quite differently, which is exactly why a single published ceiling would be a promise made in ignorance of your water.
Then the controls, which are the part that actually holds the risk down. Inline instruments govern the pass and act on their own authority, cutting the oxidant the moment a reading crosses the line. What they cannot see is bromate. A stable end-product needs bench chemistry to pin down, so an independent laboratory confirms it on an agreed cadence, and neither job covers for the other. Your oversight body holds the same live data. And you, or an agent you qualify, can put an active deployment on hold on any suspected breach until it is cleared. Residual oxidant is quenched wherever a pass leaves any, so that what reaches the outlet sits inside the agreed figure rather than leaning on the receiving water to finish it off. That constrains the quench itself: it cannot exert an oxygen demand of its own. Sulfur reductants do exert one, and spending oxygen at the last step would work against the enrichment the whole pass exists to produce.
Asked by chemists and environment ministries
Four straight answers
What are you putting into our water?
Water. Yours, taken in through the intake, treated inside a closed reactor as it passes, and released oxygen-enriched into the water it came out of.
Nothing is stored aboard, so nothing is taken away and nothing arrives from anywhere else. What governs that release is a concentration rather than an assurance: agreed with the authority that consents the work, read at the outlet, and confirmed by a verifier outside this company. The regulatory object is therefore a discharge, which every environment ministry already knows how to write conditions for.
Does ozonating our seawater form bromate?
It can, and whether it does is a property of your water rather than of the technology. Bromide has to be present above a threshold, and salt and brackish water do not always carry it. Ozone reacts indiscriminately too, so bromide competes for it with all the dissolved carbon in the column.
We publish no fixed ceiling and will not be drawn into one. The governing limit is whatever applies to your receiving water, agreed with the authority consenting the work and written into the service level agreement before a system is deployed. A drinking-water figure is the wrong test for open sea, and a desalination plant taking that water already runs equipment that handles bromate.
What eliminates the risk in practice is the regime. The instruments watch the pass continuously and can shut the oxidant off with no person in the loop, an outside laboratory confirms the bromate result on an agreed cadence, your oversight body holds the same feeds, and you can put an active deployment on hold on any suspected breach until it is cleared.
Source: Ozone: Science & Engineering — bromate formation in seawater ozonation
Your inline instruments cannot see bromate. What confirms it?
An independent laboratory, on a set cadence.
Real-time probes govern the pass and can cut the oxidant on their own, but a stable end-product is not something they read, and pretending otherwise is how a reviewing chemist catches an operator out. The two jobs run alongside each other and neither one covers for the other.
Does the treatment take metals out of our water?
No, and nobody running an oxidation stage should tell you otherwise. Oxidation disables a molecule; a metal is still a metal afterward.
What follows from that is the part worth having in writing. Oxidation drops nothing out of solution onto your bed either, so this stage leaves no sediment for anyone to dredge later.
Sources
- NOAA National Centers for Coastal Ocean Science — nanobubble technology validated for remediation of harmful freshwater algal blooms, 26 September 2018.
- NOAA National Centers for Coastal Ocean Science — nanobubble ozone technology and invasive species in ballast water, 1 July 2020.
- Science of the Total Environment — mass transfer of nanobubble aeration and its effect on biofilm growth.
- Ozone: Science & Engineering — bromate formation and control in seawater ozonation.
For the chemist on your side of the table
Send the water, the season and the chemistry you hold.
Back comes the discharge standard we would sign up to for that water, the assay plan either side of the reactor, and the gas budget that zone would need. In writing, with the assumptions printed underneath.