Biosolidealso biosolids are produced by sludge drying from sewage sludge and offer great potential for sustainable sustainable disposal systems. Biosolids are particularly suitable for use in agriculture and energy production.

What are biosolids?

Biosolids are treated sewage sludgewhich originates from municipal or industrial wastewater treatment plants and is converted into a stable, usable form through various processing stages. Through the process of sludge drying the solid components of the sludge are extracted, resulting in a product that is rich in organic materials and nutrients such as nitrogen and phosphorus.

These drying processes minimize the volume of the sludge and transform it into a manageable, less odorous and hygienically safe substance. The end productsthe biosolidsmeet strict environmental standards and are free from harmful substances. This treatment turns a waste product into a valuable resource for various applications, particularly in agriculture.

Extraction of biosolids from sewage sludge

The extraction of biosolids begins with the collection of sewage sludge from the wastewater treatment. This sludge is then further treated using physical, chemical and biological processes. This includes thickening of the sludge to remove water, followed by stabilization stabilizationwhere harmful microorganisms are broken down.

The subsequent drying reduces the water content further, transforming the sludge into a solid, transportable form. These processing steps are crucial for turning the raw sludge into biosolids.

A sustainable step in waste recycling

Biosolids offer significant advantages for a sustainable economy. In the agriculture they improve soil fertility and structure and increase yields by providing slow-release nutrients that promote plant growth. These properties make them a cost-effective alternative to chemical fertilizers. fertilizers. In addition, biosolids can be used in energy production as biomass fuel which contributes to the reduction of greenhouse gas emissions. Their use supports the approach of the circular economyby allowing nutrients to be returned to the soil and at the same time helping to reduce waste.