Design parameters for CE processes (focus on phosphorus, water and energy recovery)

This deliverable is associated with Task 51 WP5 aims to demonstrate technical and economic feasibility of implementing a circular economy scheme at two urban wastewater treatment plants WWTPs to recover phosphorus salts water and energy To achieve this goal several technologies should be designed for successful implementation on each demo site Case Study CS 4 5 i vivianite crystallizer ViviCryst phosphorus recovery as vivianite at CS 4 5 ii biophree adsorption phosphorus removal to ultralow concentrations and recovery as a liquid fertilizer product at CS 4 5 iii nanofiltration NF to facilitate the separation of monovalent and divalent salts at CS4 iv reverse osmosis RO to treat further the permeate rich in sodium chloride and recover water at CS4 v granular anaerobic membrane bioreactor AnMBR remove organic matter and produce biogas for energy purposes at CS5 vi partial nitritation PN reactor with granular biomass to oxidise the ammonium until nitrite at high loading rates and low energy requirements at CS5 vii anaerobic ammonium oxidation anammox reactor with granular biomass to reduce nitrite and produce dinitrogen gas at high loading rates and low energy requirements at CS5 and viii reverse osmosis process with regenerated membranes to obtain water quality for industrial or agricultural purposes This deliverable report will include the design of each unit and related equipment for implementation