PANACÉE : ÉVALUATION DU FONCTIONNEMENT D'UN BIORÉACTEUR À MEMBRANES IMMERGÉES TRAITANT DES EFFLUENTS HOSPITALIERS D'ONCOLOGIE/PANACEE : Evaluation of the functioning of a membrane bioreactor treating hospital oncological effluent

Within the framework of the ANR project "Panacea", the authors monitored the performance of a Membrane Bioreactor (BaM) in Purpan hospital (hematology department, Toulouse). The project aims to identify and quantify molecules, used in cancer therapies, in the effluents of the corresponding departments; measure biological effects (eco-/geno-/cyto-toxic and endocrine disruptors); and develop a treatment process consisting of a combination of biological and physicochemical treatments. From the treatment point of view, the BaM was operated with an effective sludge retention time of 40 days and the study consisted of estimating the effect of the hydraulic residence time (HRT), the other parameters being equal. Two campaigns were carried out for HRT = 24 and 48 h. The quality parameters of the treated water meet the discharge standards. The quantitative chemical analyses show very variable removal of the pharmaceutical molecules during the BAM treatment, ranging from total elimination to the "production" of molecules, suggesting the operation of decomplexation phenomena.