Stronger oxidation with less ozone
Ozone is a good oxidant and a poor dissolved gas: it decomposes in minutes and escapes before it has done the work. Nanobubbles hold it in the water long enough for the reaction to finish — which is where the saving comes from.
Why ozone needs a carrier
Ozone's solubility is high enough, but its half-life in water is measured in minutes at neutral pH and it degrades faster as temperature rises. Conventional venturi injection therefore wastes a large share of the generated ozone to the off-gas. Every kilogram that leaves the basin unreacted is electricity spent at the ozone generator for nothing.
Two things improve with nanobubbles. The interfacial area is enormous, so mass transfer is fast; and the residence time is long, so the oxidant stays where the contaminant is. With a 20 nm SiC membrane as the dispersion medium we quote 85% gas–liquid mass transfer on the product data sheet — a test-bench figure, not a plant guarantee.
Where it pays
- Dye and printing wastewater. Colour is removed by oxidising the chromophore. Ozone nanobubbles reach dissolved colour that flotation cannot touch. Demonstration footage on our site shows high-colour effluent going from dark brown to pale in a single pass, unedited.
- Food washing and surface sanitation. Ozone leaves no residue — it reverts to oxygen. Published figures for post-harvest wash water include up to 50% less water use with improved pathogen control.
- Algal control in lakes and reservoirs. Ozone attacks algal cells and oxidises sediment organic matter, addressing the nutrient source rather than the bloom.
- Pre-treatment before biology. For pharmaceutical and refractory wastewater, ozone oxidation ahead of the biological stage raises the BOD/COD ratio, which is what makes an existing plant able to treat a load it previously could not.
What the package includes
| Item | Specification | Why it matters |
|---|---|---|
| Dispersion | 20 nm SiC membrane, 1–2×10⁸ bubbles/mL | Uniform pore gives a narrow bubble distribution and high transfer area |
| Seals | PTFE / FFKM throughout the ozone-wetted path | EPDM and most elastomers degrade rapidly in ozone |
| Tail gas | Destructor plus return to the membrane shell, target utilisation 85–95% | Ozone in the working area is a safety issue, and off-gas is money |
| Interlocks | O₃ ambient monitor, ORP control, automatic shutdown | Ozone exposure limits are low and the gas is not detectable by smell at safe levels |
| Capacity | 8–500 m³/h across the O-series | No compressor needed on the liquid side |
Status note: the tail-gas recycle target of 85–95% utilisation is a design objective. We have not yet completed the three-point mass balance (O₃ dosed / O₃ in off-gas / O₃ in effluent) that would prove it in the field, and we are not going to present a target as a measurement. Ask us for the balance data before you design a guarantee around it.
Safety and honesty notes
- Ozone is not a substitute for validated disinfection in drinking water. It is a process aid.
- Bromate formation is a real risk in bromide-containing water. If your water has bromide, test for bromate before you commit to ozone.
- Material compatibility is not optional. Stainless steel is largely fine; copper, natural rubber and many plastics are not. A cheap package that skips the seal specification will fail in months.
- Off-gas must be destroyed, not vented indoors. We will not supply a package without a destructor and an ambient monitor.
Need colour, odour or COD removed?
Send the COD, colour and bromide figures. If ozone is the wrong tool for your water, we will suggest the right one instead.
Discuss an ozone duty → Or control membrane fouling