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Biogas Upgrading Plant - BioComplete

Pentair’s BioComplete is the most comprehensive approach to turning biogas into bio-methane in combination with our efficient CO2 technology that provides you with an additional carbon intensity lowering revenue stream: food-grade CO2.



Biogas is a key renewable energy source. Pentair is your partner in turning waste streams into sustainable energy solutions and valuable revenue streams.

Pentair’s BioComplete - cost-efficient membrane-based biogas upgrading solution allows for the highest bio-methane yield with zero methane slip and low energy consumption. The robust design and our dedicated service teams with 24/7 support (local and remote) allow for the best upgrading system availability.

The bio-methane can be injected into existing gas grids as a sustainable replacement of fossil natural gas or it can be utilized as fuel – either as Renewable Compressed Natural Gas (Renewable CNG) or Renewable Liquid Natural Gas (Renewable LNG). Utilizing bio-methane eliminates fossil fuel-based carbon emissions in industrial and domestic environments, transportation, electricity, and heat production.

Pentair’s Sustainable Gas Solutions specializes in biogas upgrading and CO2 recovery systems. With over 1500 installed plants, including more than 40 biogas upgrading systems, Pentair’s dedication to this core business is widely recognized within the industry. Our R&D department is constantly researching emerging technologies for improving the efficiency and effectiveness of our biogas upgrading solutions. Most importantly: we are there for you when your system is operating -- with global service hubs and dedicated technical support. We diagnose and optimize whenever you need us to keep your plant up and running! That’s why Pentair!


  • Two revenue streams: bio-methane and liquid CO2
  • Low OPEX with low pressure membrane operation
  • Low Total Cost of Ownership (TCO)
  • Increased biogas value with market demand shift from electricity to bio-methane production
  • Zero methane slip
  • 24/7 remote service and support for high reliability (availability)


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In the pre-treatment, water and contaminants are removed from the biogas. The biogas pre-treatment allows for modest contamination levels of hydrogen sulfide (H2S) and volatile organic compounds (VOC) -- for bulk removal of H2S or VOC’s, other options are available. After pre-treatment, the biogas is compressed to the most OPEX and CAPEX efficient pressure that allows for the removal of CO2. The membranes then remove the CO2 from the methane to meet the required Renewable Natural Gas (RNG) specifications. Upgraded bio-methane can be injected into the national grid or further processed to renewable CNG or LNG. The separated CO2 stream is further compressed, cleaned, liquefied, and purified to exceed food-grade CO2 quality requirements as needed.


  • Biogas blower
  • Activated carbon-based bulk pre-treatment (H2S and VOC)
  • Scrubber
  • Gas Entry Unit
  • CNG compression and storage solutions
  • Installation and commissioning services



Product leaflet
Biogas Upgrading Plant - BioComplete
Product leaflet
Biogas Upgrading Plant - BioComplete (German)
Product leaflet
Biogas Upgrading Plant - BioComplete (Italian)
Case study
Technical documentation
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Product leaflet
Biogas Upgrading Plant - BioComplete | Pentair - product leaflet
Product leaflet
Biogas Upgrading Plant - BioComplete | Pentair - product leaflet (German)
Product leaflet
Biogas Upgrading Plant - BioComplete | Pentair - product leaflet (Italian)
Case study
Biogas Upgrading Technology - Westdorpe | Pentair - Case study
Technical documentation
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Explore our new Pentair Biogas Upgrading Solutions website and discover how to reach your emissions targets. -