[Trisha]

While the others have mentioned many parameters to watch during normal operations, there are some parameters that can be useful to measure in digester upset conditions. These can help gather information to conduct a root cause analysis for the upset.

• Speciated Volatile Fatty Acids
• Speciated Long-Chain Fatty Acids
• Volatile Solids Reduction (VSR)
• BOD
• Total Phosphorus
• Ortho-phosphorus
• Total Metals
• Dissolved Metals
• Food to Microorganism ratio (F:M)

Often however, the individual values of any parameter are not as important as the overall trend of each. Especially in the case where the digester biology has acclimated to conditions that would be inhibitory for other digesters if it occurred suddenly.

For daily operations, watching changes in operating parameters is key. Biological systems like slow, gradual changes. Some metrics and reasoning behind them are mentioned in our attached article.

Need help understanding digester performance metrics? Email me at trisha.aldovino@AzuraAssociates.com

Top 10 Things to Make Your Digester Biology Happy – AZURA

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Top 10 Things to Make Your Digester Biology Happy – AZURA

Top 10 Things to Make Your Digester Biology Happy – AZURA