M. . Ayoub and A. . El-Morsy, “Upgrading of an Extended Aeration System to Improve Wastewater Treatment”, ASRJETS-Journal, vol. 81, no. 1, pp. 23–35, Aug. 2021, Accessed: Jan. 10, 2026. [Online]. Available: https://asrjetsjournal.org/American_Scientific_Journal/article/view/6983