Experience has shown that the quality of the final product with respect to pathogen removal and mineralization of hazardous organic compounds after treatment make it possible to recycle the biosolids to agriculture as an enhanced treated product. In Denmark, sludge from municipal wastewater treatment plants has generally been used as fertilizer on agricultural land.
In the past 15 years, however, there has been a focus on the negative effects which may be associated with sewage sludge. In 1997, legislation was brought into effect by the Danish Environmental Protection Agency (DEPA) to
Was this article helpful?