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Composting

Composting is a type of aerobic digestion in which sewage sludge is combined with bulking agents such as wood chip, straw or green wastes prior to composting to provide a pasteurised product. The process is a largely static system which is aerated by natural diffusion and is therefore low in energy demand. However, composting is a lengthy process (~6 months) and so employs large land areas.

Composting features and blogs

PFAS molecule
Blog

How do you solve a problem like PFAS?

PFAS (per- and polyfluoroalkyl substances) are generated from the breakdown of fluorinated polymers. The activation barrier for their breakdown is huge and the only fully commercialised processes possibly capable of destroying PFAS are thermochemical ones.

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More process and operation topics…