1. Biogas Process Control and Automation

2. Anaerobic Digestion Anaerobic means without Oxygen Occurs at 38 degrees C Produces a combustible gas called biogas Biogas is 65% Methane and 35% Carbon Dioxide Many families of microbes are involved Require a stable environment Inputs are anything organic with a C:N ratio of 20:1 to 30:1 Output is a liquid called digestate

3. Benefits of Biogas Results in a renewable energy in the form of electricity and heat Electricity production is constant 24/7 Reduces greenhouse gas emissions Reduces the odour associated with manure Eliminates most pathogens Results in a high value fertilizer called digestate Creates jobs and technology advancement Increases the lifespan of landfill sites

4. The Biogas Process

5. Organic Fertilizer Barn Engine Manure Organic Material Heat Biogas Primary Dgester House Digestate Storage Dry Feeder Secondary Digester Electrical Distribution System Separation Digester Layout

6. Biogas Plant Systems Input System Heating System Gas Treatment System Gas Utilization System Electrical System Pumping and Mixing System Monitoring System

8. Input System

11. Heating System

12. Gas Treatment System

13. Utilization System

14. Electrical System

15. Pumping and Mixing Systems

16. Monitoring System

17. Other Systems Over / Under Pressure Relief Flare

18. Last Thoughts More automation is inevitable Automatic gas quality testing – H2S, O2, CH4%, CO2% Automatic parameter monitoring in vessel – pH, Ammonia Levels, Total Solids, Volatile acids, Volatile Organic levels