Zero-Sludge-Disposal Urban Wastewater Treatment Plant

The SCWG (Super Critical Water Gasification) process consists of gasifying biomass waste in aqueous medium, under supercritical conditions. (Above its critical point which corresponds to a pressure of 22.1 MPa and a temperature of 374 ° C). At this operating conditions the water acquire particular properties (such as density, viscosity, thermal conductivity and specific heat) allowing the transformation of wet biomass in high calorific syngas through a clean process.

Biomass/organic waste is decomposed almost entirely in pressurized H2, CO, CH4 and CO2 by means of hydrolysis and oxidation reactions, a process favored by the high solubility in supercritical water of intermediate products. Intermediate inorganic salts are recovered through a selective precipitation process.