Wasmi M. Salih T. SEWAGE WATER HEAT RECOVERY: A PROPOSED STUDY AS AN APPLICATION OF ENERGY SAVING IN IRAQ. J. eng. sustain. dev. 2017;21(1):114-123. Accessed June 3, 2026. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/505