title: Performance of A-stage process treating combined municipal-industrial wastewater.
abstract: A biosorption column and a settling tank were operated for 6 months with combined municipal and industrial wastewaters (1 m3/hr) to study the effect of dissolved oxygen (DO) levels and Fe3+dosage on removal efficiency of dissolved and suspended organics prior to biological treatment. High DO (>0.4 mg/L) were found to be detrimental for soluble chemical oxygen demand (COD) removals and iron dosing (up to 20 ppm) did not improve the overall performance. The system performed significantly better at high loading rate (>20 kg COD.m-3.d-1) where suspended solids and COD removals were greater than 80% and 60%, respectively. This is a significant improvement compared to the conventional primary sedimentation tank, and the process is a promising alternative for the pre-treatment of industrial wastewater.
authors.affiliation: School of Civil Engineering & Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, Toowoomba, 4350 QLD, Australia E-mail: antoine.trzcinski@usq.edu.au.
authors.forename: Antoine Prandota
authors.initials: AP
authors.lastname: Trzcinski
authors.affiliation: Advanced Environmental Biotechnology Centre (AEBC), Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, #06-10, Singapore 637141, Singapore.
authors.forename: Chong
authors.initials: C
authors.lastname: Wang
authors.affiliation: Advanced Environmental Biotechnology Centre (AEBC), Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, #06-10, Singapore 637141, Singapore.
authors.forename: Dongqing
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Public Utilities Board, Water Reclamation (Plants) Department, 40 Scotts Road, #15-01, Singapore 228231, Singapore.
authors.forename: Wui Seng
authors.initials: WS
authors.lastname: Ang
authors.affiliation: Public Utilities Board, Water Reclamation (Plants) Department, 40 Scotts Road, #15-01, Singapore 228231, Singapore.
authors.forename: Li Leonard
authors.initials: LL
authors.lastname: Lin
authors.affiliation: Meiden Singapore Pte Ltd, 5 Jalan Pesawat, Singapore 619363, Singapore.
authors.forename: Terutake
authors.initials: T
authors.lastname: Niwa
authors.affiliation: Meidensha Corporation, Nishibiwajima Kiyosu Aichi, 4528602, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Fukuzaki
authors.affiliation: Division of Environmental and Water Resources, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore and Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore.
authors.forename: Wun Jern
authors.initials: WJ
authors.lastname: Ng
mesh_terms: D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D002947:Cities; D007220:Industrial Waste; D010100:Oxygen; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D007220:Industrial Waste; D010100:Oxygen; D062065:Wastewater