[Peter]

The five most common operation issues that we see are:

– Foam in Digesters or Receiving Tanks

– Hydrogen Sulfide in Biogas

– Ammonia in Digesters

– Odor Complaints

– Grit Accumulation in the Digester

Foam is an acute problem experienced by almost every digester that must be addressed by operators to avoid upsets, however it is a problem that can often be resolved quickly.

Hydrogen sulfide in biogas is growing as a concern for many facilities as they convert to RNG and must reach substantially lower targets in their product gas.

Ammonia concentrations will only be a problem for certain digesters receiving high nitrogen feedstocks,
however for those digesters managing ammonia will be an ongoing
challenge.

Odor complaints are also an acute problem, but can be avoided with the right technology and diligent operation.

Finally grit is not a problem that causes clear issues for an operator on any given day, however all digesters accumulate grit and must have a strategy to deal with it eventually.

We have an article with five more operational issues here on our website:

https://azuraassociates.com/commonly_overlooked_reasons_for_anaerobic_digester_failures/

azuraassociates.com

Commonly Overlooked Reasons for Anaerobic Digester Failures – AZURA

Commonly Overlooked Reasons for Anaerobic Digester Failures – AZURA