Description
The recovery of phosphorus from urban wastewater treatment plants (WWTP) (aqueous phase and sludge) and from materials (i.e. ashes) after thermal oxidation (i.e. incineration) of sewage sludge.
Scope of Assets
Construction, upgrade, and operation of dedicated facilities for the recovery of phosphorous from wastewater.
The economic activity only includes the facilities and processes that make phosphorus recovery possible, not the previous steps, such as wastewater treatment or incineration facilities.
PSIC/ISIC code
38300 - Materials recovery (ISIC 3830) 37000 - Sewerage (ISIC 3700) 42900 - Construction of other civil engineering projects (ISIC 4290)
Technical Screening criteria (TSC)
Substantial contribution criteria
Struvite recovery threshold (from wastewater treatment) Recovery threshold (from sewage sludge thermal oxidation) Quality of recovered products as per legislation
1. For the process integrated at the waste water treatment plant, covering typically phosphorus salts such as struvite–magnesium ammonium phosphate (NH4MgPO4·6H2O), the phosphorus recovery process recovers at least 15% of the incoming phosphorus load. Only the harvested material, such as struvite, is counted for the calculation of this threshold.
2. For down-stream recovery after sewage sludge thermal oxidation with chemical phosphorus recovery, the process recovers at least 80% of the incoming phosphorus load from the respective input material, such as sewage sludge ash.
3. The phosphorus extracted out of the system is used either as a component material in a fertilising product compliant with Regulation (EU) 2019/1009 or national fertiliser legislation where it is more stringent, or in another field of application where the recovered phosphorus fulfils specified functions in accordance with the respective regulations.
Complementary measures and practices
Energy efficiency measures
Complementary measures and practices
N.A