Thanks to our thermal recycling activities, we reduce annual demand for fossil fuels by over 100,000t and generate 70,000 MWh of energy

An eye for the bigger picture.
New ways to recycle sludge

Sludge is a versatile resource that is generated by the treatment of wastewater. This recyclable material is particularly interesting as it contains phosphorus – a vital element for all living organisms - as well as other nutrients and organic substances. Moreover, in its dried form, sludge has an energy content similar to that of brown coal. As market leader, we create natural closed cycles: by recycling it so it can be used on the fields of local farms, by thermally treating it to generate energy and by recovering and recycling phosphorus.

Energy recovery

  • Energy recovery means that the calorific value of the sludge is used to generate energy – whilst eliminating pollutants at the same time. Using the material as a secondary fuel in power stations and sewage sludge incineration plants is an intelligent and carbon-neutral way to produce energy that also helps to cut demand for fossil fuels.

  • An ever increasing number of power stations are using this intelligent and carbon-neutral way to produce energy

Use in agriculture

  • Sludge used on farmland is an eco-friendly and sustainable way of replenishing the nutrient, humus and mineral content of soils

  • Using sludge as a fertiliser on farmland is a sustainable form of recycling as 60% of all phosphate in Germany is used by agricultural businesses to fertilise their fields and a further 20% for producing animal feed. Sludge is an extremely important supplier of nutrients and humus and helps to conserve our planet's natural resources.


  • We close material cycles by recovering phosphorus – a resource that it becoming more and more scarce – from the wastewater and using it as a fertiliser

    The sludge and organic structural elements undergo a biological treatment process to produce high quality composts and soil substrates which can be used for gardening and landscaping as well as for redeveloping land. The composting method is an environmentally friendly process which generates a final product that is rich in nutrients and ideal for improving soils.

Our portfolio of services

REMONDIS Aqua can provide you with a range of comprehensive services as well as bespoke solutions drawn up to meet your specific requirements and framework conditions. We offer, among other things, the following:

    • Developing integral recycling concepts that take all laws and regulations into account
    • Providing assistance with approval procedures and dealing with the relevant authorities
    • Drawing up the necessary records of proper waste management
    • Handling notification procedures for international waste management projects
    • Drawing up logistics concepts using road, rail and inland waterways
    • Organising and scheduling the collection, dewatering and conditioning of the materials

Why not see for yourself?

  • Satisfied customers can often convey far more than simple numbers. Learn more about our projects at home and abroad! more

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    REMONDIS Aqua GmbH & Co. KG
    Brunnenstraße 138
    44536 Lünen
    T +49 2306 1068900
    F +49 2306 106699

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