WASTEWATER TREATMENT APPARATUS, WASTEWATER TREATMENT METHOD, AND WASTEWATER TREATMENT SYSTEM

摘要

A wastewater treatment apparatus (1) of the present invention is provided with: an oxidation treatment means (20) for oxidizing a metal complex-forming compound contained in wastewater (W0) that contains at least a heavy metal and the metal complex-forming compound; an insolubilization treatment means (30) for insolubilizing the heavy metal in the oxidized wastewater (W0); and a membrane separation means (40) for separating the insolubilized wastewater (W0) through a membrane. In addition, a wastewater treatment method of the present invention uses the above-described wastewater treatment apparatus. The present invention is capable of providing a wastewater treatment apparatus, a wastewater treatment method and a wastewater treatment system, each of which is capable of highly treating wastewater that contains a heavy metal and a metal complex-forming compound without adding a flocculant to the wastewater, and each of which is capable of sufficiently decreasing the heavy metal concentration.