Towards Circular Economy Solutions: Managing Wastewater from Paint Production

The imperative for sustainable water management strategies is driven by challenges, such as limited water availability, economic development, population growth, and escalating environmental concerns. A viable strategy involves water collection and reuse. This study assessed the quality of wastewater produced by paint manufacturing companies, which is characterised by high chemical oxygen demand and turbidity, as well as the presence of organic materials, suspended particles, and heavy metals. Such wastewater requires treatment prior to environmental discharge. After analysing the current methods of wastewater treatment in the paint industry, this study seeks to establish a conceptual framework for developing a methodology for the collection of wastewater from rinsing machines and containers within the paint manufacturing sector while identifying optimal practices in raw wastewater management. It examines various strategies for minimising the waste generated in the paint manufacturing industry, drawing upon the waste management practices of a specific plant. Utilising data from 190 samples, the quality of the generated wastewater was estimated using probabilistic methods, including the Monte Carlo simulations, distribution fitting, and Student’s t-test. Based on the results, a wastewater management strategy was formulated for the company. By implementing water treatment and recycling systems, paint manufacturers can reduce their reliance on freshwater resources, lower the costs associated with wastewater disposal, and mitigate their environmental impact. Effective management in this domain can significantly enhance the treatment of industrial wastewater and facilitate the development of strategies for the reuse of rinse wastewater, thereby supporting the principles of a circular economy.