The P-recovery is no longer a trait of pioneer wastewater treatment plants, but recently it became a legal requirement (AbfKlärV) in Germany. And other EU countries will most probably follow soon.
We have developed three suitable process technologies that meet three particular requirements of the regulation. All patented or patent pending. AirPrex®-Micro and AirPrex®-Macro recover phosphorus as small and large struvite crystals. CalPrex® recovers phosphorus as brushite crystals. Both struvite and brushite are proven as excellent plant fertilizers. And thus both economically and ecologically equally attractive.