title: Effect of filling fraction on the performance of sponge-based moving bed biofilm reactor.
abstract: Cubic-shaped polyurethane sponges (15×15×15mm) in the form of biofilm carriers were used in a moving bed biofilm reactor (MBBR) for treating synthetic domestic wastewater. Results indicated there was no significant difference in total organic carbon (TOC) and ammonia (NH4(+)-N) removal at different filling fractions. Three reactors exhibited high removal efficiencies of over 93% TOC and 95% NH4(+)-N on average at an HRT of 12h and aeration flow of 0.09m(3)/h. However, total nitrogen (TN) removal and simultaneous nitrification and denitrification (SND) increased with increasing the filling fraction. TN removal averaged at 77.2, 85.5% and 86.7% in 10%, 20% and 30% filling fraction reactor, respectively. Correspondingly, SND were 85.5±8.7%, 91.3±9.4% and 93.3±10.2%. Moreover, it was observed that sponge carriers in the 20% filling fraction reactor achieved the maximum biomass amount per gram sponge, followed by the 10% and 30% filling fraction reactors.
authors: Department of Environmental and Municipal Engineering, Bioprocess Centre For Sustainable Environment, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China.
authors: Xinbo
authors: X
authors: Zhang
authors: Department of Environmental and Municipal Engineering, Bioprocess Centre For Sustainable Environment, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China.
authors: Xun
authors: X
authors: Chen
authors: Department of Environmental and Municipal Engineering, Bioprocess Centre For Sustainable Environment, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China.
authors: Chunqing
authors: C
authors: Zhang
authors: Department of Environmental and Municipal Engineering, Bioprocess Centre For Sustainable Environment, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China.
authors: Haitao
authors: H
authors: Wen
authors: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia.
authors: Wenshan
authors: W
authors: Guo
authors: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia. Electronic address: ngohuuhao121@gmail.com.
authors: Huu Hao
authors: HH
authors: Ngo
mesh_terms: D000641:Ammonia / Q000378:metabolism; D000818:Animals; D018441:Biofilms; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology; D002244:Carbon / Q000378:metabolism; D058440:Denitrification; D004867:Equipment Design; D058465:Nitrification; D009584:Nitrogen / Q000302:isolation & purification / Q000378:metabolism; D011140:Polyurethanes; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods; D062065:Wastewater / Q000737:chemistry
chemical_list: D000641:Ammonia; D002244:Carbon; D009584:Nitrogen; D011140:Polyurethanes; D062065:Wastewater
keywords: Filling fraction; Simultaneous nitrification and denitrification; Sponge based moving bed biofilm reactor; Sponge carrier