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| CH-Four Biogas understands that a biogas project is more than just an anaerobic digester – it’s an integrated biotechnology system. What sets us apart is our proven track record of combining the best individual components and merging them into a successful project. Anaerobic Digestion Technology CH-Four Biogas employs completely-mixed, mesophilic wet anaerobic digestion as our core technology. This design has proven to be extremely reliable and versatile while affording maximum biogas yields in a cost- effective manner. In order to meet the needs of unique client requirements, we also have a track-record of developing alternative anaerobic digestion system designs. Feedstock Management Technology In the world of biogas, system feedstocks are everything. In order to facilitate the use of a wide variety of organic materials, we have developed comprehensive feedstock pre-processing systems capable of accommodating various organic residue streams. Feedstock flexibility = Project versatility To enable the safe and reliable use of feedstock mixes, CH-Four Biogas developed highly advanced anaerobic digestion computer modeling software. This software enables us to accurately predict how any potential organic feedstock will react in an anaerobic digester. This technology allows us to develop the most reliable and highest-yielding feedstock recipes possible. Effluent Management Technology In order to maximize the value of a biogas project, effective management of post-digester material (digestate) is critical. CH-Four Biogas has developed a variety of effluent management systems to meet the needs of our clients. Whether recovering livestock bedding, isolating and concentrating nutrients, or purifying effluent for direct discharge, CH-Four Biogas has the experience to meet any project requirements. Feedstocks and Digestion Process Modeling Over the course of our more than seven years of doing business in North America, we did every now and again run into ‘strange’ substrates for which no literature is available. We dealt with those by adapting the ADM1 anaerobic digestion model (IWA), originally developed for municipal sludge for industrial and agricultural biogas plant. Over time, we have evolved this program into a valuable simulation tool, allowing us to not only improve performance of existing biogas plants, but also biochemically simulate biogas system performance while the project is still on the drawing board. Today, we are using this simulation for research of new anaerobic digester designs, feasibility studies and optimization of existing systems. |

