A modular treatment system for treating a substantially liquid waste stream and a method of treating such waste streams are disclosed. The waste treatment system includes a metal ion generation chamber for introducing metal ions into the waste material and an oxidant generation chamber in fluid flow communication with the metal ion generation chamber for denaturing the waste stream with an oxidizing agent. In some embodiments, the waste treatment system comprises a maceration device for initial treatment and homogenization of waste material, a metal ion infusion chamber in fluid flow communication with the maceration device for introducing metal ions into the waste material, and an oxidation chamber for wet oxidation of the waste stream.
