The researchers found that treating distillery wastewater with a process called catalytic wet air oxidation improved its ability to be broken down by bacteria. By using a catalyst and adjusting factors like temperature and oxygen pressure, they were able to reduce the pollutants in the wastewater and increase the amount of biogas produced. After further treatment steps, they achieved a significant reduction in pollutants and a higher ratio of biodegradable material in the wastewater. This study provides a practical method for improving the treatment and reuse of distillery wastewater.