Producing high-quality phosphorus fertiliser – the process
The process relies on controlled crystallisation in a specialised reactor:
- Feedstock input
Nutrient-rich liquid streams such as wastewater centrate or sludge liquors are introduced. - Chemical conditioning
Magnesium is added and pH is adjusted to trigger precipitation. - Crystal formation in fluidized bed reactor
Struvite crystals form and grow into uniform granules under controlled flow conditions. - Effluent discharge
The treated water, with reduced nutrient content, is returned to the treatment system.
The final product
The output is a granular struvite fertiliser with slow nutrient release, suitable for agricultural use and integration into nutrient management practices.