Ozonation Combined with Electrolysis of Night Soil Treated by Biological Nitrification and Denitrification Processes

摘要

Ozonation combined with electrolysis with a two-compartment electrolytic flow cell was developed and its applicability to ammonia nitrogen and TOC removal in effluent from a night soil treatment facility was discussed in this research. The developed flow cell with an anion exchanged membrane as a separator was effective to remove ammonia nitrogen by electrochemically generated chlorine and TOC by hydroxyl radical generated via cathodic reduction of ozone. Total nitrogen removal rate under the optimal condition reached to 75 % and TOC removal rate maximally reached to 47 % in this research.