Effect of Using Effective Microorganisms EM-1 on the Performance of Extended Aeration Activated Sludge in Treating Domestic Wastewater. Tikrit Journal of Engineering Sciences, [S. l.], v. 16, n. 4, p. 53–61, 2009. DOI: 10.25130/tjes.16.4.09. Disponível em: https://tj-es.com/ojs/index.php/tjes/article/view/624.. Acesso em: 9 sep. 2026.