The DRAC, (“Desinfecció i Reutilització d'Agües Residuals a Catalunya”, Wastewater disinfection and reuse in Catalonia - Spain), project is included in a RDD (Research, Development, and Demonstration) program. The project arises from the necessity to define reclamation treatments guaranteeing an effluent with enough quality to be reused with a minimal microbiological risk. This paper presents the first results obtained from the combination of a physical-chemical pilot and two disinfection pilot systems: ozone and chlorine dioxide. The combination of physical-chemical and disinfection systems allows the use of lower doses of disinfectants, thus minimising the negative impacts of the whole process and improving the reliability of the reclamation facilities.

This content is only available as a PDF.