Back to results
US 8,801,932 B2Granted
Sub-critical partial oxidation for treatment of nitration wastes
AssigneeNoram International Limited
InventorMichael Gattrell
Life of this patent
Estimating the term…
Abstract
A process for treating wastewater containing nitro-hydroxy-aromatic compounds using oxidative sub-critical conditions. The wastewater to be treated is adjusted to contain excess hydroxide equivalent to greater than three moles of free hydroxide per mole of total nitro-hydroxy-aromatic compounds, and a sub-stoichiometric amount of an oxidant is supplied to the wastewater. The nitro-hydroxy-aromatic compounds may include nitro-phenol salts or nitro-cresol salts.
Claims24
A process for treating wastewater containing a nitro-hydroxy-aromatic compound using sub-critical conditions comprising the steps of:
- adjusting the wastewater to be treated to contain excess hydroxide equivalent to greater than three moles of free hydroxide per mole of total nitro-hydroxy-aromatic compounds;
- and
- supplying a sub-stoichiometric amount of an oxidant to the wastewater.
Dependencies are inferred from the claim text.