The Most Reliable Oxygen Technology for Biogas — Proven, Efficient, Safe
The industry has already settled the first question: controlled oxygen injection is a proven, continuous way to remove H₂S biologically — no chemical purchases, no media change-outs, no disposal. That decision creates the next one. Once your process depends on oxygen for the long term, you need consistency and reliability — which means choosing equipment that has already proven itself, uses less electricity, and has fewer components that can break down. Here's how ON2's patented vacuum-cycle technology answers that, in the order that matters: reliability, the technology itself, and safety.
1. Reliability: proven where failure was never an option
ON2 has been building oxygen systems since 1984, with 70M+ operating hours in the field — including environments where the oxygen supply protects lives, not just uptime. Every plant is manufactured in the USA in an ISO 13485 facility and designed to NFPA 99. That heritage matters for one reason: the technology was engineered to a standard where breakdowns were unacceptable, and it brings that same standard to your digester. The self-cleaning sieve bed has run 20+ years in the field without replacement.
2. The technology: why the ON2 cycle costs less to run
Conventional PSA generators fight their own physics: heat, humidity, and contaminants accumulate in the sieve bed, so they need air dryers to protect it and consume 30–40% of their own oxygen just to keep running — delivering only 60–70% of rated output. ON2's patented vacuum cycle sweeps heat, humidity, and contaminants out of the system every 100 seconds. The result: 100% of rated output delivered, 20–40% less electricity, no air dryer to maintain, and no pressure booster. Fewer components under stress means fewer things that can break down — and a lower power bill every hour the plant runs.
Scalable and modular: from 10 to 10,000 liters per minute
ON2 systems scale from 10 LPM to 10,000 LPM, and the plants are modular — capacity can be matched to your gas volume today and expanded as your project grows. Each plant arrives as a complete containerized unit that can be placed anywhere on site, outdoors, year-round, from −50°C to +50°C. The same technology runs the smallest clinic and the largest renewable fuels facility; only the module count changes.
3. Safety: the plant watches itself so it can't surprise you
On a combustible-gas site, an oxygen plant must be engineered for safety — and monitored. ON2 plants generate oxygen on demand from ambient air, so there is no stored oxygen inventory, no liquid oxygen deliveries, and no cylinders. Inside the container, real-time monitoring tracks oxygen levels, CO₂, ventilation, temperature, and oxygen purity — visible from your control room — so conditions inside the plant are always known and your facility is protected.
Specifications that match biogas requirements
ON2 containerized oxygen plants deliver 90–95% oxygen purity — the range typically specified for biological desulfurization — with delivery pressure adjustable from 0 to 50 psi to match your digester headspace or injection point. The insulated, climate-controlled container is engineered for year-round outdoor operation from −50°C to +50°C, proven in deployments from Yellowknife, Canada to New Delhi, India.
Buy it or lease-to-own
ON2 offers direct purchase or lease-to-own over 5 or 7 years, so the oxygen plant can be matched to your project's capital plan instead of the other way around. Either way you deal with a single manufacturer — we understand your project, design the system, then build, ship, and commission it. ON2 has been building oxygen systems since 1984, with every system manufactured in the USA.
What's included
- 90–95% oxygen purity for biological desulfurization
- Delivery pressure adjustable from 0 to 50 psi
- Proven outdoor operation from −50°C to +50°C
- Plug-and-play containerized plant — no building required
- Runs on demand; standby when oxygen isn't needed
- Direct purchase or lease-to-own over 5 or 7 years
Frequently asked questions
What oxygen purity do ON2 plants deliver for biogas desulfurization?
ON2 containerized oxygen plants deliver 90–95% oxygen purity, the range typically specified for biological hydrogen sulfide removal in anaerobic digesters. Purity and flow are confirmed against your gas volume and composition during quoting.
Can the plant sit outdoors year-round?
Yes. The insulated, climate-controlled container is engineered for year-round outdoor operation from −50°C to +50°C, proven in deployments from northern Canada to India. It arrives as a complete plug-and-play plant — no building required.
Can we lease the oxygen plant instead of buying it?
Yes. ON2 offers lease-to-own over 5 or 7 years alongside direct purchase, so you can spread the cost into predictable payments and keep capital available for the rest of the project.
Talk to the manufacturer, not a distributor
Tell us about your project and we'll show you exactly how the technology earns its reliability record — purchase or lease-to-own.