What pH, VFA and alkalinity ranges are healthy?
sourced
Bulk digester pH should sit around 6.5-8, and methanogens prefer 6.5-8.2. The earliest warning of instability is not pH itself but a rising ratio of volatile fatty acids to alkalinity - pH only moves once the buffer is already spent.
- Source
- EPCM Holdings; 99pt5
- sourced
- Traceable to a named source.
- Level
- Practitioner — Operating numbers, ranges and failure modes.
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