[Natalia Bourenane]

@exeon_laila Laila, do you have any insights?

[Natalia Bourenane]

@technoedif_antonio I believe you were interested in this topic. Feel free to participate

[Jeff]

We offer Centriair equipment for Odor control and VOC removal. Much smaller footprint than a biofilter. Energy efficient. Oxidizes VOCs by UV radiation, excess ozone and photochemical oxidation. This is a great idea for facilities close to residential or commercial zones.

[Gurkeerat]

Thanks Jeff. Can you give examples where this has been implemented successfully.

[Jeff]

We have several reference sites in Europe covering Waste Reception, Solid Waste, Biogas Plants, Dry Digestion, Waste Water Treatment, Sludge Drying, Sewage Systems, Bioethanol plants, Organics treatment plants, Anaerobic Digestion plants, and more. I would be happy to send information.

[Gurkeerat]

This really is a big issue particularly in the developing countries were social acceptibility of the biogas plants is very very limited. Are there any examples where odour control has been successfully done

[Jeff]

We have several in Europe where the technology was created. Sweden, Finland, UK, Germany, Lithuania, Denmark, Norway, Poland, …
We only serve Centriair in the North America market. If you are interested elsewhere, I can share the contact with you directly of Centriair.

[Gurkeerat]

We are developing a biogas plant based on agri waste in India. Have any suggestions for that.

[Jeff]

I sent you a direct message.

[Simone]

Dear,

Ecomembrane as several installation in India and we can support you if you are looking for digester covers suitable to store gas, contain odors and avoid CO2 emisison at the same time.

You can contact us directly:

srenzi@ecomembrane.com

sshroyer@ecomembrane.com

We are at your disposal.

Thanks

http://www.ecomembrane.com

[Joerg]

From my experience, good and effective odor management (facility design as well as operational SOPs) is often not paid adequate attention to, especially when feedstocks, that are more odorous in nature, are considered for processing. The industry has seen several AD facilities being shut down due to inadequate odor management implementation, which caused huge financial losses to the owners. Once the relationship with the community and its members aka “sensitive receptors” is strained it is difficult to restore and re-build trust.

The same holds true for composting facilities, (also where composting is performed on the digestate on site. It takes experience and solid understanding of facility design and operation to assure successful operation of the facility to meet its intended design life.

My advice: do not take this topic lightly and get experienced professionals on board to navigate through this and implement a robust plan, often requiring a multi-layered approach.

[Simone]

Completely agree!

At Ecomembrane, we do our part to encourage EPCs and engineering firms to consider our covers as part of the solution to the problem of CO2 emissions into the atmosphere.

[Trisha]

There are industrial RNG plants that successfully manage odour. In Elmira, Ontario, Canada there is a large facility that receives food waste and highly contaminated feedstocks. It is built right by neighbourhoods, but it receives no odour complaints. The company prioritizes odor management, both in their engineering design and in operations.

Odour emanates from the feedstock itself, as well as the digestate if the biology in the digester is upset. No odour should come from the digester itself because it is a gas tight system. Odour risk is higher in the feedstock receiving and digestate storage areas. But I would focus on the receiving area for sure.

In the receiving area, some things you can do:

• Receive material indoors
• The door to the receiving area only opens when there is a truck unloading feedstock
• Keep the indoor receiving area at a negative/vacuum pressure so that when the door opens, the air flows in from the outside instead of odours escaping out
• If you have a receiving pit, invest in a cover

The easiest engineering solution for digestate odour would be to store it in a covered tank. Digestate should not have odours. Digestate odour is a sign of biological upset. While Azura doesn’t currently have an article on odour, we do have an article on how to keep your digester biology happy to reduce odour risk from your digestate: https://azuraassociates.com/digester-biology-top-10/

Looking for ways to manage odour (beyond just equipment solutions)? Email me at trisha.aldovino@AzuraAssociates.com and we can discuss how to mitigate these risks for your project.

azuraassociates.com

Top 10 Things to Make Your Digester Biology Happy – AZURA

Top 10 Things to Make Your Digester Biology Happy – AZURA