HEAVY METAL REMOVAL IN A COMBINED UASB-DFAF AND HUASB-DFAF SYSTEM REACTORS TREATING MUNICIPAL WASTEWATER. Malaysian Journal of Civil Engineering, [S. l.], v. 27, 2018. DOI: 10.11113/mjce.v27.15969. Disponível em: https://journals.utm.my/mjce/article/view/15969.. Acesso em: 6 apr. 2025.