Study of the concentration of some pollutants of wastewater from water purification plants. Journal of Pure & Applied Sciences , [S. l.], v. 17, n. 1, 2018. DOI: 10.51984/jopas.v17i1.106. Disponível em: https://www.sebhau.edu.ly/journal/jopas/article/view/106. Acesso em: 30 jan. 2026.