The elimination of waste liquids by thermal oxidation consists in causing their combustion and keeping the gases generated at a sufficiently high temperature for the time necessary to complete the reaction. These conditions are achieved inside an oxidation chamber properly designed to get a good mixture inside and a sufficient residence time. In this way, the organic compounds are completely transformed into CO2 and water.
The advantages of the systems of elimination of residual liquids by thermal oxidation are:
The liquids are eliminated in a complete and clean way.
The heat released in combustion can and must be used, achieving like this the energetic recovery of the waste.
Liquids that are not combustible themselves can be eliminated, like water contaminated with organic compounds. In this case, it may be necessary to provide additional fuel.
The flame temperatures are low, so low levels of nitrogen oxide emission are achieved.