Wastewater management in Mediterranean coastal areas.  <B>Wastewater management in Mediterranean coastal areas.</B><P>A. Castillo, P. LLabres and J. MataAlvarez</B><I><P> Departament d'Enginyeria Quimica i Metallurgia, Universitat de Barcelona, Barcelona, Spain</I><P> Abstract<P> In this paper a combined treatment for domestic sewage is presented. The treatment consists of a preanaerobic process, carried out by an Upflow Anaerobic Sludge Blanket (UASB) followed by an aerobic process carried out by two consecutive Rotating Biological Contactors (RBC's). This configuration is very appropriate for mediterranean coastal areas, because tourism makes the load of the process to increase during Summer, when the temperature is higher and the efficiency of the process is higher too. In Winter the trend is reversed. Experiments show that overall BOD removal efficiencies are very similar in both seasons.<P>