The Project Pills is embedded in project SLIK by the waterboard Groot Salland. SLIK stands for `Sanitaire Lozingen Isalaklinieken┬┤ meaning sanitary discharge of the Isala hospital.

The goal of project SLIK is to build and operate the first full-scale wastewater treatment plant for the treatment of sewage from the Isala hospital in Zwolle, containing rests of medicines and hormones to gain more insight in the treatment steps, operational aspects and costs to be able to improve to water quality in and near Zwolle.

The following parties take an active role in the project SLIK: Waterboard Groot Salland ( ), Isala hospital ( ) , Municipality Zwolle ( ), Province Overijssel ( ), Ministry of Housing, Spatial Planning and Environment ( ), ministry of Traffic and Water ( ), Foundation for Applied Water Research ( ), Vitens ( ) and National Instistute for Public Health and the Environment ( ).

The current knowledge and experience in the field of the removal from residues of medicines and hormones out of wastewater streams and in the field of the European Water Framework Directive (EWFD)is available and applicable with the abovementioned partners.

A significant reduction can be obtained (>90%) of the emission of rests of medicines and hormones from sewage from hospitals. Local, and thus separate, treatment of the sewage from the hospital leads to a sustainable and cost effective water chain.

The local treatment of the wastewater from the Isala hospital directly leads to a reduction of the amount of hospital-specific compounds on the wastewater treatment plant Hessenpoort. Also the emission of rests of medicines to the river Vecht, the river of discharge from Hessenpoort, will decrease from 20 up to 50%, depending on the exact component.

At the end of project SLIK, there will be enough knowledge to treat sewage from hospitals at the source on a large scale at a cost effective manner.

The research set up in project SLIK is completely independent of the collection of sewage and the logistics within the hospital, making this project appropriate to apply to already existing hospitals.

Much attention is paid to effect measurements in the SLIK project: ecotoxicity and bioassays are conducted to determine the removal efficiencies and the effects of the installation on the water environment. Those measurements are performed by the RIVM, a partner in the project SLIK and a prominent institute in this field in The Netherlands and Europe.

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