The EU-funded LIFE project ENRICH (Enhanced Nitrogen and phosphorus Recovery in the value CHain), Sept. 2017 – Feb. 2021, will design, develop and implement integrated nutrient recovery and recycling in the sewage sludge recycling train of the Murcia Este municipal sewage works, Spain (500 000 p.e.) which operates biological phosphate removal. The project will include sludge elutriation to increase availability of soluble phosphorus and so increase the proportion of total sludge phosphorus recovered by struvite precipitation. Additionally are included ion exchange with zeolites (demonstrated high affinity for ammonium) combined with hollow fibre INPI membrane contactors for the recovery of ammonium salts, promotion of digested sewage sludge as a source of nutrients and organic carbon for agriculture, and optimised mixing of struvite – ammonium salts – digested sludge to correspond to agronomic requirements. The recovered products will be tested in field trials and a replicable business model will be developed. Membership of ESPP enables ENRICH to exchange experience with other relevant projects and companies (recycling technology suppliers, organic and mineral fertiliser industries and R&D centres) and to disseminate project results widely, both in Europe and worldwide, through ESPP’s communication tools (eNews, SCOPE Newsletter, website, Twitter) and specialist networks and meetings.

ENRICH is led by Cetaqua www.cetaqua.com, the Suez – Barcelona Technical University, CSIC water technology research centre. Contact

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