ELECTROCHEMICAL DISINFECTION WITH BORON DOPED DIAMOND ELECTRODES AND REDUCTION OF ELECTROLYSIS BY-PRODUCTS

摘要

Environmental pollution is a growing challenge for water utilities. Even today organic compounds are not always efficiently removed during water treatment. For more than 20 years boron doped diamond electrodes (BDD) have been well known for electrochemical processes with very high oxidative power. Electrochemical processes based on BDD electrodes are used in several industrial disinfection applications such as the pharmaceutical industry (ultra-pure water ozonization) or ballast water treatment (marine application). Using such an electrochemical advanced oxidation process makes it possible to degrade organic compounds. Due to the high oxidative power of BDD electrodes there is a potential risk for the generation of electrolysis by-products (EBP) such as bromate or chlorate as well as halogenated organic compounds (AOX). This investigation presents some applications of BDD for disinfection, recycling and wastewater treatment processes in different water types by modification of BDD composition and structure.