Method and system for waste treatment

A waste treatment system suitable for use aboard marine vessels and in mobile land vehicles comprising:

• influent screen means adapted to receive influent sewage from a source of sewage, said influent screen means adapted to separate influent sewage into solid waste matter and screened waste liquid;
• an evaporator/incinerator including burner means adapted for incinerating the solid waste matter;
• means for transferring the solid waste matter from said influent screen means to said evaporator/incinerator;
• receiving means for receiving screened waste liquid from said influent screen means;
• means for transferring waste liquid from said screen means to said receiving means;
• centrifuge means adapted to separate sludge from clarified liquid in the screened waste liquid;
• means for transferring the screened waste liquid from said receiving means to said centrifuge means;
• means for withdrawing the sludge from said centrifuge means and passing said sludge to the evaporator/incinerator;
• ozonator means for receiving the clarified liquid, said ozonator source generally adapted to disinfect said clarified liquid and to remove a substantial portion of suspended solids from the clarified liquid, said ozonator means including:
• a source of ozone,
• at least one reactor column adapted to receive the clarified liquid for reaction with the ozone,
• diffuser means in each reactor column for introducing and evenly dispersing ozone bubbles within the clarified liquid to provide gas-to-liquid contact, and
• means for supplying ozone from said ozone source to said diffuser means;
• means for transferring clarified liquid from said centrifuge means to each of said reactor columns;
• means for removing the removed solids contained generally in a foam formed on the surface of clarified liquid in each reactor column and for passing the solids to said evaporator/incinerator;
• and
• means for withdrawing the remaining disinfected liquid from said ozonator means.