Intermittent Aeration in a Hybrid Moving Bed Biofilm Reactor for Carbon and Nutrient Biological Removal

MDPI AG - Tập 12 Số 2 - Trang 492
Gaetano Di Bella1, Giorgio Mannina2,3,4
1Faculty of Engineering and Architecture, University of Enna Kore, Cittadella Universitaria, 94100 Enna, Italy
2College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
3Department of Engineering, University of Palermo, Viale delle Scienze Ed 8, 90128 Palermo, Italy
4School of Environmental and Municipal Engineering, Tianjin Chengjian University, 26 Jinjing Road, Xiqing District, Tianjin, 300384, China

Tóm tắt

The paper presents an experimental study on a lab scale hybrid moving bed biofilm reactor with intermittent aeration. Specifically, a comparison between two different operating conditions was analyzed: continuous and intermittent aeration. Both continuous and intermittent aeration were monitored and compared in order to get the best operational conditions. The intermittent aeration campaign was sub-divided in three phases with different duration of alternation of aerobic and anoxic times and organic and nitrogen loading rates. The efficiency of N-removal improved by 70% during the intermittent aeration. The best condition was observed with 40 min of aeration and 20 min of no-aeration, an organic loading rate of 2.2 kgCODm−3day−1 and a nitrogen loading rate of 0.25 kgNm−3day−1: under these operational conditions the removal efficiencies for carbon and nitrogen were 93% and 90%, respectively. The derived results provide the basis for WWTP upgrade in order to meet stricter effluent limits at low energy requirements.

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Tài liệu tham khảo

(1991). Directive 91/271 of the European Union. EC. Council Directive 91/271/EEC of 21 May 1991 concerning urban waste water treatment. Off. J., L135, 40–52.

Wang, 2004, Partial nitrification under limited dissolved oxygen conditions, Process Biochem., 39, 1223, 10.1016/S0032-9592(03)00249-8

Torregrossa, 2013, Simultaneous nitrogen and organic carbon removal in aerobic granular sludge reactors operated with high dissolved oxygen concentration, Bioresour. Technol., 142, 706, 10.1016/j.biortech.2013.05.060

Carucci, 2002, A model to control intermittent aeration phases, Water Sci. Technol., 46, 99, 10.2166/wst.2002.0561

Hanhan, 2002, Retrofitting activated sludge systems to intermittent aeration for nitrogen removal, Water Sci. Technol., 46, 75, 10.2166/wst.2002.0149

Kim, 2011, Wastewater Treatment in Moving-Bed Biofilm Reactor operated by Flow Reversal Intermittent Aeration System, World Acad. Sci. Eng. Technol., 60, 581

Hidaka, 2002, Effect of dissolved oxygen conditions on nitrogen removal in continuously fed intermittent-aeration process with two tanks, Water Sci. Technol., 45, 181, 10.2166/wst.2002.0425

Mannina, 2011, Modelling and dynamic simulation of hybrid moving bed biofilm reactors: Model concepts and application to a pilot plant, Biochem. Eng. J., 56, 23, 10.1016/j.bej.2011.04.013

Mannina, 2009, Hybrid moving bed biofilm reactors: An effective solution for upgrading a large wastewater treatment plant, Water Sci. Technol., 60, 1103, 10.2166/wst.2009.416

Rusten, 1994, A new moving bed biofilm reactor-applications and results, Water Sci. Technol., 29, 157, 10.2166/wst.1994.0757

Pastorelli, 1999, Phosphorus and nitrogen removal in Moving-Bed Sequencing Batch Biofilm Reactors, Water Sci. Technol., 40, 169, 10.2166/wst.1999.0589

Sliekers, 2002, Completely Autotrophic Nitrogen Removal Over Nitrite in One Single Reactor, Water Res., 36, 2475, 10.1016/S0043-1354(01)00476-6

Araki, 1990, Intermittent aeration for nitrogen removal in small oxidation ditches, Water Sci. Technol., 22, 131, 10.2166/wst.1990.0193

Capodici, 2015, Pilot scale experiment with MBR operated in intermittent aeration condition: Analysis of biological performance, Bioresour. Technol., 177, 398, 10.1016/j.biortech.2014.11.075

Campo, 2017, The role of EPS in the foaming and fouling for a MBR operated in intermittent aeration conditions, Biochem. Eng. J., 118, 41, 10.1016/j.bej.2016.11.012

Luostarinen, 2006, Nitrogen removal from on-site treated anaerobic effluents using intermittently aerated moving bed biofilm reactors at low temperatures, Water Res., 40, 1607, 10.1016/j.watres.2006.02.022

APHA (1998). Standard Methods for the Examination of Water and Wastewater, American Public Health Association. [20th ed.].

Mannina, 2014, Comparison between moving bed-membrane bioreactor (MB-MBR) and membrane bioreactor (MBR) systems: Influence of wastewater salinity variation, Bioresour. Technol., 162, 60, 10.1016/j.biortech.2014.03.126

Kristensen, 1992, Characterization of Functional Microorganism Groups and Substrate in Activated Sludge and Wastewater by AUR; NUR and OUR, Water Sci. Technol., 25, 43, 10.2166/wst.1992.0113

Wang, 2009, Comparative performance between intermittently cyclic activated sludge-membrane bioreactor and anoxic/aerobic-membrane bioreactor, Bioresour. Technol., 100, 3877, 10.1016/j.biortech.2009.02.054

Ferrentino, 2018, Process performance optimization and mathematical modelling of aSBR-MBBR treatment at low oxygen concentration, Process Biochem., 75, 230, 10.1016/j.procbio.2018.08.023

Cheng, 2001, Nitrification/denitrification in intermittent aeration process for swine wastewater treatment, J. Environ. Eng., 172, 705, 10.1061/(ASCE)0733-9372(2001)127:8(705)

Cosenza, 2013, Biological Nutrient Removal and Fouling Phenomena in a University of Cape Town Membrane Bioreactor Treating High Nitrogen Loads, J. Environ. Eng., 139, 773, 10.1061/(ASCE)EE.1943-7870.0000667

Cosenza, 2013, The role of EPS in fouling and foaming phenomena for a membrane bioreactor, Bioresour Technol., 147, 184, 10.1016/j.biortech.2013.08.026

Mannina, 2018, The effect of the solids and hydraulic retention time on moving bed membrane bioreactor performance, J. Clean. Prod., 170, 1305, 10.1016/j.jclepro.2017.09.200

Liu, 2017, Enhanced removal of total nitrogen and total phosphorus by applying intermittent aeration to the Modified Ludzack-Ettinger (MLE) process, J. Clean. Prod., 166, 163, 10.1016/j.jclepro.2017.08.017

Mannina, 2016, Sequential batch membrane bio-reactor for wastewater treatment: The effect of increased salinity, Bioresour Technol., 209, 205, 10.1016/j.biortech.2016.02.122

Mannina, 2015, Effect of C/N shock variation on the performances of a moving bed membrane bioreactor, Bioresour Technol., 189, 250, 10.1016/j.biortech.2015.03.143

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MDPI AG

Tập 12 Số 2

492

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