<![CDATA[The growth of industrial activity has intensified waste generation, posing challenges to environmental sustainability and resource efficiency. This study examines the application of process integration in sustainable industrial waste treatment systems and evaluates its contribution to energy efficiency, resource utilization, and environmental impact reduction. Using conceptual analysis and case studies of waste treatment technologies—including heat recovery, material recycling, and integrated reaction–separation processes—the study applies pinch analysis and mass–energy balance evaluation to identify optimal integration opportunities. The results demonstrate that process integration significantly reduces energy consumption, minimizes residual waste, and increases the reuse of valuable materials, while also lowering emissions and operational costs. These findings confirm that process integration is an effective and practical strategy for designing sustainable industrial waste treatment systems and provides valuable insights for advancing environmentally friendly and competitive chemical engineering solutions.]]>
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