Combined WEF and IWA-NRR conference: Nutrient removal and recovery 2013 – trends in resource recovery and use: nutrient recovery processes, nutrient recovery from source-separated urine and agricultural effluents, nutrient management of biosolids. Conference organised by WEF (Water Environment Federation), IWA (International Water Association), WERF (Water Environment Research Foundation) and British Columbia Water & Waste Association. http://www.wef.org/nutrients/