RESUMEN
Combined sewer overflows discharging into natural water bodies could potentially contaminate them in terms of conventional wastewater parameters and coliform bacteria. When green water infrastructures are not technically feasible or practically sustainable for stormwater management, innovative compact and effective end-of-pipe systems can be of interest. This study presents long-term and real-environment validated data of a compact and rapid treatment system specifically applicable to CSOs that consists of a dynamic rotating belt filter, adsorption on granular activated carbon and UV disinfection steps. The results of treatment for Lake Garda in Italy, showed great potential for TSS, COD and E. coli removal efficiencies with more than 90%, 69% and 99% respectively. Due to the short contact time of GAC adsorption, nutrients removals were not very high. TN and TP removal of around 41% and 19% were observed respectively that suggests further specific nutrients removal processes are required for achieving higher efficiencies. The treatment system, due to its compactness and rapidness could be a great asset for water utilities in different EU catchments that are dealing with the frequent CSO events. In addition, the possibility of using different combinations of treatment steps allows the choice of different treatment scenarios depending on the treatment goals for any specific catchment.
Asunto(s)
Escherichia coli , Lagos , Desinfección , Italia , Aguas del Alcantarillado , Aguas ResidualesRESUMEN
We are reporting a patient who presente with upper gastrointestinal bleeding which was in part caused by a wandering spleen. Endoscopy revealed erosions of gastric varices in the presence of gastric torsion. At surgical exploration the spleen was present in the pelvis. The twisted and elongated splenic pedicle resulted in a markedly dilated venous system of the proximal stomach and the engorged spleen. The literature of the wandering spleen is reviewed.