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English Summary

The objective of the study has been to investigate whether the cadmium, DEHP and NPE content of the fertilizer product from anaerobic digested MSW is below the limits of the Danish legislation and to identify the nitrogen, phosphorus and potassium content of the fertilizer product.

The project was performed at an anaerobic digestion plant in Vaarst, where the MSW was digested without adding liquid manure. The MSW was collected in 6 municipalities in the northern part of Zealand and was pretreated in Herning.

The cadmium content of the raw pretreated waste was around 0,2 mg/kg DM. The cadmium content of the digested fertilizer product was 0,72 mg/kg DM, which is higher than the limits as from year 2000.
The cadmium to phosphorus ratio is only a little higher than the limit and improving the sorting in the households could probably reduce the content.

The DEHP content of the raw pretreated waste is around 28 mg/kg DM, but an improved extraction before analyzing more than doubled the content. The actual DEHP content is thus assumed to be more than the double of the actual value of the raw pretreated waste.

The DEHP content of the digested fertilizer product was around 160 mg/kg DM, which is much higher than the limits as from year 2000.

In the project period the NPE content of the raw material and of the fertilizer was in the project period below the limits as from year 2000.

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