Decentralised wastewater treatment
The future calls for smarter water use!
With climate change and resource scarcity, it is time to use our water efficiently and sustainably. Decentralised wastewater treatment is an innovative method of treating wastewater locally, saving drinking water and recovering energy and valuable resources.

Desah's solutions
Desah provides compact systems that are fully geared to local use and contribute to a circular economy.
With more than 15 years of experience, Desah is a pioneer in source-separated wastewater treatment. Our technologies not only provide more sustainable water management, but also offer proven solutions for a future-proof approach.
From sustainable housing estates to self-sufficient holiday parks, Desah offers the solution for circular water chains.

Source-separated wastewater treatment
By collecting and treating grey and black water separately at source, drinking water consumption can be reduced and water, energy and raw materials recovered and reused. Black and grey water are treated energy-efficiently. The treated water can then be safely discharged or reused.
Applications:
- Fixed (new) locations
- Recreation and temporary use
- Portable toilet rental
- Additional WWTP capacity
Mobile wastewater treatment
A mobile wastewater treatment solution in the form of containers offers a robust, compact and versatile alternative to traditional treatment plants. Its modular design makes it flexible and plug-and-play, ideal for efficient wastewater management and reuse.
Applications:
- Fixed (new) locations
- Recreation and temporary use
- Portable toilet rental
- Additional WWTP capacity


Black water treatment
Our advanced blackwater treatment system combines a thermophilic digester with nitrogen and phosphate removal modules, ensuring lower treatment costs. The system produces biogas as a renewable energy source, removes micro-pollutants and offers struvite recovery, recovering valuable minerals for applications in energy production and agriculture. This innovative technology contributes to a circular economy and supports cost savings and environmentally friendly solutions.
Applications:
- Fixed (new) locations
- Recreation and temporary use
- Portable toilet rental
- Additional WWTP capacity
Other solutions
- Maintenance & service: full management of Desah systems.
- Lab testing & R&D: continuous innovation in water treatment technologies.
- Continuous innovation in decentralised water treatment technologies.

Circular water solutions in action
Desah in practice:Desah applies its technologies in high-profile projects worldwide. Below are some leading cases in which Desah realises local and wastewater treatment.
Joining forces
Want to see for yourself how Desah applies circular water treatment? Visit one of our reference projects and find out how our technologies work in practice.
