Recovery of Phosphorus from Wastewater Treatment Systems

Projekter: ProjektForskning


Phosphorus (P) is a non-renewable resource essential as fertilizer to ensure sufficient food production. The global, mineable P deposits are predicted to be
depleted within 60-130 years resulting in increased P and food prices thereby a
necessary reliance on P-recovery. Phosphorus in Danish wastewater is estimated to cover 15-25% of the Danish demand. Consequently, we propose a novel strategy for optimized P-recovery from wastewater by a detailed understanding of the P components, their availability and their flow in the wastewater treatment systems as well as applying specialized phosphate accumulating microorganisms to enhance capture of P components into the biomass. Hence, excess biomass is converted to bioenergy in digesters where release of stored P compounds and enzymatic hydrolysis of specific P compounds into the digester liquid will be stimulated. Highvalue P products will be concentrated and recovered from the P-rich liquid by a novel combination of ion-exchange, reactive crystallization and membrane processes, and the process will be optimized with respect to the overall recovery of different types of P products and the economy¬ of the process. Our team of experts on P-recovery from wastewater in Denmark, which represent both Danish and foreign universities as well as Danish consultant and municipal utilities will facilitate the transformation of Danish wastewater treatment plants to P-recovering units providing economic benefits for the municipal utilities and society. It will also support the competitiveness of the Danish wastewater industry on an increasing global marked.
Kort titelRecoverP
Effektiv start/slut dato01/04/201530/09/2019