Treatment of Industrial Wastewater by High Temperature and High Pressure Water Oxidation

Abstract

A new process for treatment of industrial wastewater under high temperature and pressure has been developed. The process can decompose industrial wastewater at 400-500°C and 9-10MPa in 30-60 seconds in the presence of a catalyst. In this report, we describe the treatment results of industrial wastewater using a catalyst in the experimental equipment.

In addition, equalization of the combustion temperature is necessary in applying this process into large scale pilot plant reactor. Therefore, in order to atomize industrial wastewater, two-fluid nozzle has been developed. The temperature distribution during the oxidation without two-fluid nozzle is heterogeneous. By employing the two-fluid nozzle, the temperature distribution in the pilot plant reactor stays constant around 500°C and decomposition rate increases to 99.9%.