components of the plasma reactor 10 and its shape may be adapted to the system in which it is implemented the housings may include additional components that adapt the plasma reactor 10 to the system in which it is implemented in some embodiments the housing may have a rounded shape with a plurality of sidewalls the housings 17 18 and 45 may also include aligned threaded and non threaded holes 37 to allow for fasteners to assemble the housings 17 and 45 to the lower housing 18 in addition the lower housing 18 may include a liquid inlet port 20 and a liquid outlet port 21 which may be connected to the liquid inlet tube 19 and liquid outlet tube 22 respectively the housings and other components may be constructed from metals plastics ceramics or the like the upper housing 17 generally retain the first electrode 24 and an optional pre ionization electrode 36 high dielectric element 23 and alignment rod 12 the upper housing 17 may have a box shape with a plurality of sidewalls and an internal cavity 38 bounded by the sidewalls the internal cavity 38 may be filled with dielectric materials ceramics polymers gases or the like to provide electrical isolation and suppress undesirable corona discharge from the first electrode 24 to the upper housing 17 and alignment rod 12 the upper housing lid 17 may also have a second opening roughly centered on the housing to allow for a central alignment rod 12 to which the.