Before we produce Renewable Natural Gas (RNG), we are producing biogas coming out of the digester. This biogas is upgraded and made into RNG.
Creating Ideal Conditions for Fermentation Bacteria
In biogas plants, bacteria play a crucial role in converting biomass and manure into biogas. The efficiency of this process heavily depends on the living conditions of these bacteria. By monitoring key parameters such as pH and dissolved oxygen, plant operators can ensure optimal conditions, leading to higher biogas output.
Key Measurements for Optimal Bacterial Performance
- pH Levels:
- The ideal pH range for microbial breakdown of biomass and manure is between 7.4 and 8. Maintaining this pH range ensures that the bacteria can efficiently process the materials, maximizing biogas production.
- Dissolved Oxygen:
- While anaerobic conditions are necessary for biogas production, monitoring dissolved oxygen levels can help in preventing unwanted aerobic conditions that could hinder the process.
The Importance of Measuring Total Solids
Measuring total solids in conjunction with the suspension volume is another critical aspect of optimizing biogas production. This measurement helps in maintaining the fermenter’s volume load at an optimal level for the bacteria. By keeping the volume load in check, the bacteria can perform at their best, making the biogas production process more efficient.
Conclusion
Regular analytical measurements in biogas plants are essential for optimizing the living conditions of fermentation bacteria. By carefully monitoring and adjusting pH levels, dissolved oxygen, and total solids, operators can enhance the efficiency of biogas production, ultimately leading to higher output and more sustainable operations.
Product Recommendation:
pH: Endress+Hauser CM44 Txmtr and CPS11D ph Sensor
DO:
Total Solids: Endress+Hauser Teqwave MW 500