Thermal Process Systems Equipment


Thermal Process Systems

Product Brochure

Wastewater Equipment


Are you ready to take your anaerobic digestion to the next level? Do you want more gas production and reduced H2S levels? The EXCALIBAR is for you.

How it works
The ExCalibAer™ process utilizes different environments specifically tailored for the biological kinetics of each reactor. What makes ExCalibAer unique is the process control mechanism. The Sweet Gas Reactor (SGR) is a mesophilic aerobic digester that follows the anaerobic portion of the process and serves as the engine to provide a driving force for process and nutrient control. As the final process step the SGR is ideally suited for nitrification, EPS reduction and biosolids conditioning before dewatering. Aerobically treated material headed for dewatering is wasted out of this reactor, while a portion of material is recycled back to the beginning of the process providing pH and nutrient control across the entire system.

The Feed Denit Tank (FDT) accepts raw feed, while creating an ideal environment for fermenta-tion through temperature control, a short HRT and optimal growth kinetics. Fresh feed material undergoes the rapid processes of hydrolysis and acidogenesis that convert the organic material into volatile fatty acids (VFAs), while the recycled material is the driving force for pH control, H2S suppression, and long-term stability by offsetting feed fluctuations. The conditions established facilitate rapid and efficient denitrification, releasing N2 gas from the system, while reclaiming alkalinity that maintains ideal values for pH and the VFA to alkalinity ratio.

VFA-rich material from the FDT is transferred to a conventional or existing Methanogen Reactor (MR) designed to convert VFAs into a methane-rich biogas. The environmental condi-tions established enable the system to achieve a high conversion of VFAs to methane, while reducing both the toxicity related to H2S and ammonium in the liquor to prevent precipitation of minerals. The control offered by the ExCalibAer process allows mother nature to thrive.


• Inhibits H2S production in methanogen reactor
• Higher quality biogas
• Up to 65% VS destruction
• Substantial volume reduction >50% TS
• Enhanced cake solids from mechanical dewatering
• Reduction of polymer for dewatering (up to 50%)
• Elimination of ferric dosing
• VFA/PAO return for BNR
• Automated process control
• Low Odor Class ‘B’ biosolids


Reach out to a sales engineer today to find out more!

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