I Wayan Koko Suryawan, Iva Yenis Septiariva, Qomarudin Helmy, Suprihanto Notodarmojo, Marita Wulandari, Novi Kartika Sari, Ariyanti Sarwono, Riska Pratiwi, Jun-Wei Lim
The purpose of this research is to investigate wastewater treatment with ozone pre-treatment and post-treatment integrated with Moving Bed Biofilm Reactor (MBBR). Ozonation as a pre-treatment served to increase the Biochemical Oxygen Demand (BOD)/Chemical Oxygen Demand (COD) ratio while as a post-treatment to remove the remaining organic residues. Ozone doses were 1 mg/min, 4 mg/min, 20 mg/min, and 40 mg/min. In the pre-treatment, ozone produced a BOD/COD value of 0.68. The MBBR process had a COD and color removal efficiency of 68.89% and 67%, respectively. In the MBBR process without ozone pre-treatment, the efficiency of COD and color removal were 79.31% and 64.7%, respectively. The effluent treatment results from MBBR were then processed with ozone and showed the highest COD and color removal results of 76.8% and 99%, respectively. In this study, the processing with ozone as post-treatment was better than the pre-treatment. © 2021
Department of Environmental Engineering, Faculty of Infrastructure Planning, Universitas Pertamina, Komplek Universitas Pertamina, Jalan Sinabung II, Terusan Simprug, 12220, Jakarta, Indonesia; Study Program of Civil Engineering, Faculty of Engineering, Universitas Sebelas Maret, Jalan Ir Sutami 36A Surakarta, Jawa Tengah, 57126, Indonesia; Department of Environmental Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Komplek Universitas Pertamina, Jl. Ganesha No.10, Lb. Siliwangi, Kecamatan Coblong, Indonesia; Environmental Engineering Department, Institut Teknologi Kalimantan, Balikpapan, 76127, Indonesia; Environmental Engineering Study Program, Department of Infrastructure Technology and Regional, Institut Teknologi Sumatera, Jl. Terusan Ryacudu, Lampung, 35365, Indonesia; Department of Fundamental and Applied Sciences, HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar, 32610, Malaysia
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