Minh Nhat Phan, Nguyen Van Nhi Tran, Jimmy Yu and Tan Phong Nguyen 2022. Treatment of ammonium in slaughterhouse wastewater by UASB technology combined with EGSB using anammox and PVA gel. Vietnam Journal of Science, Technology and Engineering. 62, 1 (Mar. 2022), 85-89. DOI:https://doi.org/10.31276/VJSTE.62(1).85-89.