In the present study, enhanced wet oxidation of excess sludge from pharmaceutical wastewater by NaOH as an alkaline homogeneous catalyst was investigated. The experiments were carried out in a stainless-steel batch autoclave reactor. highest volatile suspended solids (VSS) removal rate, 95.2%, achieved at 260 °C within 60 min with initial oxygen pressure 1.0 MPa and 0.5 g·L−1. Simultaneously, c...