
Desah black water treatment
Smart and sustainable on-site toilet water treatment
Bij Desah zetten we in op circulaire, decentrale oplossingen voor het behandelen van zwartwater; het toiletwater uit woningen, gebouwen of recreatievoorzieningen. Door zwartwater apart in te zamelen en lokaal te zuiveren, verminderen we de belasting op het riool én winnen we waardevolle grondstoffen zoals nutriënten en energie terug.
Our technology uses vacuum toilets and a separate sanitation system, which efficiently collects and treats black water. This makes Desah ideally suited for sustainable neighbourhoods, healthcare facilities, holiday resorts and other locations where self-sufficient water management is desired.
Features
Our black water treatment technology delivers effective and sustainable treatment of toilet water (black water), with separate collection and treatment of urine and faeces.
This first involves biological conversion of organic matter via a UASB reactor, resulting in biogas production and a significant reduction in sludge production.
Then, nutrients such as nitrogen and phosphate can be efficiently recovered with processes such as OLAND and struvite precipitation.
This creates a compact, energy-efficient solution suitable for decentralised and circular applications: from leisure and care facilities to housing projects.

Advantages
- Recovery of phosphate, nitrogen and organic matter.
- Biogas production from concentrated sludge.
- Treating locally without burdening existing infrastructure.
- Ideal for circular and sustainable area development.
