结合水动力学的厌氧消化1号模型在UASB反应器中的应用
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摘要
建立了新型的以厌氧消化1号模型为基础的对流扩散模型来模拟升流式厌氧污泥床反应器,在此模型中同时考虑了水动力学及生化动力学.模型涉及的偏微分方程借助中心有限差分法在Matlab中编程进行求解.示踪剂实验与两组有机负荷冲击实验分别用于验证对流扩散模型的水动力学及生化动力学,结果显示模拟数据与实验数据能很好地吻合.此外,所建立的模型还能反映不同高度处的反应器状态,借助这个优势可以在反应器遭受异常情况时进行预警.
A novel Anaerobic Digestion Model No.1based dispersive model was developed to simulate the upflow anaerobic sludge blanket reactor(UASB),in which both hydrodynamics and bio-dynamics were taken into account.The partial differential equations in the model was solved by finite difference method in Matlab.A tracer study and two loading-shock experiments were used to validate the reactor's hydrodynamics and bio-dynamics,respectively.The simulated data match the experimental data very well.Besides,the developed model can reflect the reactor's status at different heights,which makes it possible to give early warnings in abnormal situations.
A novel Anaerobic Digestion Model No.1based dispersive model was developed to simulate the upflow anaerobic sludge blanket reactor(UASB),in which both hydrodynamics and bio-dynamics were taken into account.The partial differential equations in the model was solved by finite difference method in Matlab.A tracer study and two loading-shock experiments were used to validate the reactor's hydrodynamics and bio-dynamics,respectively.The simulated data match the experimental data very well.Besides,the developed model can reflect the reactor's status at different heights,which makes it possible to give early warnings in abnormal situations.
引文
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[16]Mu S J,Zeng Y,Wu P,et al.Anaerobic digestion model no.1-based distributed parameter model of an anaerobic reactor:I.Model development[J].Bioresource Technology,2008,99(9):3 665-3 675.
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[22]Marchaim U,Krause C.Propionic to acetic acid ratios in overloaded anaerobic digestion[J].Bioresource Technology,1993,43(3):195-203.
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[24]Hill D,Cobb S,Bolte J.Using volatile fatty acid relationships to predict anaerobic digester failure[J].Transactions of the ASAE,1987,30(2):496-501.
[2]Schmidt J E,Ahring B K.Granular sludge formation in upflow anaerobic sludge blanket(UASB)reactors[J].Biotechnology and Bioengineering,1996,49(3):229-246.
[3]Ahn Y,Song Y,Lee Y,et al.Physicochemical characterization of UASB sludge with different size distributions[J].Environmental Technology,2002,23(8):889-897.
[4]Martínez C,Celis L,Cervantes F.Immobilized humic substances as redox mediator for the simultaneous removal of phenol and Reactive Red 2in a UASB reactor[J].Applied Microbiology and Biotechnology,2013,97(22):9 897-9 905.
[5]Mirzoyan N,Gross A.Use of UASB reactors for brackish aquaculture sludge digestion under different conditions[J].Water Research,2013,47(8):2 843-2 850.
[6]Batstone D J,Keller J,Angelidaki I,et al.The IWA Anaerobic Digestion Model No 1(ADM 1)[J].Water Science&Technology,2002,45(10):65-73.
[7]Dereli R K,Ersahin M E,Ozgun H,et al.Applicability of Anaerobic Digestion Model No.1(ADM1)for a specific industrial wastewater:Opium alkaloid effluents[J].Chemical Engineering Journal,2010,165(1):89-94.
[8]Thamsiriroj T,Murphy J D.Modelling mono-digestion of grass silage in a 2-stage CSTR anaerobic digester using ADM1[J].Bioresource Technology,2011,102(2):948-959.
[9]Xiao X,Sheng G P,Mu Y,et al.A modeling approach to describe ZVI-based anaerobic system[J].Water Research,2013,47(16):6 007-6 013.
[10]Zhao B H,Mu Y,Dong F,et al.Dynamic modeling the anaerobic reactor startup process[J].Industrial&Engineering Chemistry Research,2010,49(16):7 193-7 200.
[11]Yu L,Zhao Q,Ma J,et al.Experimental and modeling study of a two-stage pilot scale high solid anaerobic digester system[J].Bioresource Technology,2012,124:8-17.
[12]López I,Borzacconi L.Modelling a full scale UASB reactor using a COD global balance approach and state observers[J].Chemical Engineering Journal,2009,146(1):1-5.
[13]Ren T T,Mu Y,Ni B J,et al.Hydrodynamics of upflow anaerobic sludge blanket reactors[J].AIChE Journal,2009,55(2):516-528.
[14]Pea M R,Mara D D,Avella G P.Dispersion and treatment performance analysis of an UASB reactor under different hydraulic loading rates[J].Water Research,2006,40(3):445-452.
[15]Batstone D J,Hernandez J L A,Schmidt J E.Hydraulics of laboratory and full-scale upflow anaerobic sludge blanket(UASB)reactors[J].Biotechnology and Bioengineering,2005,91(3):387-391.
[16]Mu S J,Zeng Y,Wu P,et al.Anaerobic digestion model no.1-based distributed parameter model of an anaerobic reactor:I.Model development[J].Bioresource Technology,2008,99(9):3 665-3 675.
[17]Tartakovsky B,Mu S J,Zeng Y,et al.Anaerobic digestion model No.1-based distributed parameter model of an anaerobic reactor:Ⅱ.Model validation[J].Bioresource Technology,2008,99(9):3 676-3 684.
[18]Mu S J,Zeng Y,Tartakovsky B,et al.Simulation and control of an upflow anaerobic sludge blanket(UASB)reactor using an ADM1-based distributed parameter model[J].Industrial&Engineering Chemistry Research,2007,46(5):1 519-1 526.
[19]Zeng Y,Mu S J,Lou S J,et al.Hydraulic modeling and axial dispersion analysis of UASB reactor[J].Biochemical Engineering Journal,2005,25(2):113-123.
[20]Stams A J.Metabolic interactions between anaerobic bacteria in methanogenic environments[J].Antonie van Leeuwenhoek,1994,66:271-294.
[21]Angenent L T,Abel S J,Sung S.Effect of an organic shock load on the stability of an anaerobic migrating blanket reactor[J].Journal of Environmental Engineering,2002,128:1 109-1 120.
[22]Marchaim U,Krause C.Propionic to acetic acid ratios in overloaded anaerobic digestion[J].Bioresource Technology,1993,43(3):195-203.
[23]Nordstedt R,Thomas M.Startup characteristics of anaerobic fixed-bed reactors[J].Transactions of the ASAE,1985,28(4):1 242-1 247,1 252.
[24]Hill D,Cobb S,Bolte J.Using volatile fatty acid relationships to predict anaerobic digester failure[J].Transactions of the ASAE,1987,30(2):496-501.