Arc discharge application to sewage sludge treatment system

Summary form only given, as follows. Summary form only given. Sewage sludge is composed of organic materials, bacteria and mostly water. The object of the sewage sludge treatment is to destroy the cell membrane of the bacteria that contain digested organic materials. An arc discharge in water can produce shock waves, ultraviolet radiation and radical species. Using the characteristics of an arc discharge in water, we treated the sewage sludge. We used a high voltage pulse power system to generate the arc discharge in the sewage sludge. The arc discharge was generated by applying a pulse voltage of V=15-30 kV to a stainless steel reactor. For effective treatment, we also used a coaxial and a ring shape coaxial reactor. An examination method of the sewage sludge treatment is to compare soluble chemical oxygen demand before and after treatment.