Phosphorus recovery via struvite precipitation

In wastewater treatment plants, phosphorus is either removed through chemical precipitation or by biological phosphorus removal.

Especially, in cases where the plant is designed for biological phosphorus removal, operational challenges can occur due to precipitation of struvite in pumps and pipes.

As an answer to these operational challenges, solutions for controlled Phosphorus precipitation and recovery can be applied.

Phosphogreen™ is a phosphorus recovery process based on a precipitation-crystallization reaction.

This technology allows for production of struvite pellets that can be used directly as fertilizer e.g. in agriculture.

We have proven efficiency of this solution in Marselisborg wastewater treatment plant in Aarhus.