In this event the NATIONAL TECHNOLOGICAL CENTRE FOR MERCURY DECONTAMINATION was invited to make know the current activities performed by the Center, as well as its technical capabilities available to develop research projects and technological development applied to the environmental problem of mercury. In this event participated renowned Technology Centers such as the Institute of Ceramic Technology (ITC), GAIKER Technology Center, the Plataforma Solar de Almería and CTM Technology Centre , exposed their extensive experience in different fields of research. The XXXIV RSEQ Biennial Meeting held in Santander on September 15-18, with the attendance of about 1000 people.