Modification of biosolids storage environment for suppression of E. Coli: PRESENTATION ONLY

Fernandez, Y., Cranfield University


Conclusions of Research

  • Nutrients increase in the biosolids matrix increases E. coli growth
  • Oxygen availability and moisture content within the ranges tested are not the dominant factors affecting E. coli die-off rates in stored biosolids
  • E. coli die-off in biosolids is significantly increased at storage temperatures greater than 25°C
  • Insulated covered storage can maintain temperature ≥25°C over the summer months. Alternative storage environments and heat recovery on site could maintain benefit over winter months
  • Can we engineer biosolids quality? Yes, we can

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