The modern wastewater treatment plant (WWTP) is transitioning from a mere waste disposal facility into a bio-refinery where the strategic objective is no longer just effluent compliance but energy neutrality. For facility managers and process engineers, the integration of anaerobic digestion and Combined Heat and Power (CHP) systems offers a pathway to offset operational costs significantly; however, achieving energy self-sufficiency requires a rigorous adherence to data-driven operations. You cannot manage what you do not measure. Optimizing the complex biological and mechanical interface of a WWTP demands the continuous monitoring of specific Key Performance Indicators (KPIs). This guide outlines the essential...