3023 - Method of treatment of liquid digestate.

Agnieszka Makara, Zygmunt Kowalski

Cracow University of Technology, Faculty of Chemical and Engineering Technology

Patent P. 416076

As a result of treatment with mineral acids, lime milk and superphosphate, heating and filtration (wit efficiency > 1000 L /m2/h) are obtained filtrate used for irrigation of contained ~95% and ~99% lower load of COD and P, in comparison to the raw digestate and the sediment proposed as a raw material for the production of mineral-organic fertilizers.

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