On-Site Oxygen for Biogas & RNG Plants in Washington
Washington's dairy operations — concentrated in the Yakima Valley and around Whatcom County — have made manure digesters a fixture of the state's renewable energy landscape, and manure gas carries some of the highest hydrogen sulfide loads in biogas. ON2 supplies the oxygen for biological H₂S desulfurization as a complete containerized plant — designed, built, shipped, and commissioned by one US manufacturer, generating oxygen on your site from ambient air.
Dairy digester oxygen for Washington farms
Dairy manure feedstocks put H₂S control at the center of every Washington digester project, whether the gas fuels an engine or feeds RNG upgrading. ON2's containerized plant supplies the oxygen for biological desulfurization right on the farm, generating it on demand from ambient air — no liquid oxygen truck routes east of the Cascades, no chemical dosing program, and no building required. The insulated container is rated for year-round outdoor operation from −50°C to +50°C, so it handles both coastal damp and high-desert winters.
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.
Patented vacuum-cycle technology
Every 100 seconds, a vacuum sweep purges heat, humidity, and contaminants out of the system — no external air dryers and no sieve degradation. The plant runs on demand: it produces oxygen when your process needs it and goes to standby when it doesn't, unlike conventional PSA generators that typically run continuously whether oxygen is needed or not. The technology is patented, with additional patents pending.
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
Does ON2 supply oxygen plants to biogas projects in Washington?
Yes. ON2 designs and manufactures containerized on-site oxygen plants in the USA and ships and commissions them anywhere in Washington — the plant arrives plug-and-play and sits outdoors year-round, so no building is required at the site.
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.
Get a quote for your Washington biogas site
Tell us your gas volume, composition, and injection point and we'll size an oxygen plant with purchase and lease-to-own pricing.