TREATING PALM OIL MILL EFFLUENT BY ACTIVATED SLUDGE PROCESS USING SUBMERGED MECHANICAL AERATOR/AGITATOR REPLACING SURFACE AERATOR. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 81, n. 3, 2019. DOI: 10.11113/jt.v81.13147. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/13147.. Acesso em: 19 dec. 2024.