Leading the biotech revolution
in wastewater and biogas.

Baccardi distillery

THIOPAQ - Proven Reliable Biological Desulfurization Process

The challenge

Bacardi uses 2 large anaerobic reactors to digest the stillage originated by rum production. The biogas generated at the reactors needs to be cleaned (H2S removal) 2 to be used in the boilers of the distillery in substitution to fossil fuel. Bacardi had been using a chemical absorption process to remove H2S from the biogas for 20 years. The chemical absorption process presented several operational challenges as well as high operational costs.

The Paques solution

Paques designed and supplied a fully automated 2-train system, with one scrubber and one reactor per train, providing flexibility and robustness to deal with frequent gas flow variations of the process. Each of the two trains is able to treat a load of 4,500 lbs of sulfur per day. Paques also designed and supplied a dewatering and sulfur washing system which enables Bacardi to dewater and wash the elemental sulfur generated by the process to 99% purity.

The benefits

H2S concentration in treated 2 biogas is consistently below 100 ppm, ensuring efficiency > 96%. The automated dosing of nutrients and the precise automated process control ensures ease of operation and minimum caustic use. The robustness of the system is able to deal with high load variation. The pure biosulfur generated by the process has commercial value and have the potential to be traded with a fertilizer producer.

  • Design max inlet H S concentration 25,000 ppm
  • Design flow 3,000 scfm
  • Max H2S encountered >30,000 ppm
  • Outlet H2S constant at


At Paques, we believe in a cleaner, more sustainable world where innovation in biotechnology plays a crucial role in managing our planet's resources wisely.

If you have any questions or wish to explore what Paques technologies can do for your operations, we encourage you to connect with our team of experts. Our knowledgeable professionals are ready to assist you, offering insights and guidance tailored to your specific needs.

Leading the biotech revolution in wastewater and biogas

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Thank you for reaching out to Paques

Your inquiry is important to us, and we are eager to assist you in exploring our innovative solutions for biological wastewater and gas treatment.

A member of our expert team will be in touch shortly to discuss your specific needs and how Paques can help you achieve your environmental and operational goals.

We look forward to collaborating with you and hope to build a cleaner, more sustainable world together.

Warm regards,
The Paques Team