School of Engineering

Nutrient recovery from wastewater

Nutrient recovery and removal system

The role of wastewater treatment is moving from removal of substances towards recycling of resources. The main content of wastewater – water, energy, nitrogen, phosphorus and organic matter – can be recovered. We need to start using more recycled phosphorus, because sooner or later the most common phosphorus resource, inorganic phosphate rock, will be depleted. Municipal wastewaters do not necessarily contain the largest streams of phosphorus, but the recovery makes sense due to relatively high concentrations and existing centralized treatment facilities. Resource recovery in the wastewater treatment process opens the possibility to convert the carbon footprint of the treatment significantly positive – by recovery and recycling carbon emissions can be avoided.  

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