基于数学模型的倒置AAO系统阶跃响应特性分析
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摘要
采用活性污泥数学模型和阶跃响应分析方法从幅度(相对灵敏度)和动力学(响应时间)两方面开展了缺氧/厌氧/好氧(倒置AAO)工艺的特性分析,以筛选灵敏度高、响应速度快的操作变量,用以指导工艺运行优化。结果表明,进水流量(Q_f)、剩余污泥排放量(WAS)、污泥回流比(RAS)和混合液回流比(MLR)对出水水质的灵敏度较高。硝化作用对WAS和RAS变化最为敏感;溶解氧(DO)浓度则适合于出水氨氮浓度的快速调整; RAS、MLR和WAS对出水总氮和总磷浓度均有显著影响;而进水分配比对出水污染物浓度和功能性微生物含量影响不大。
Characteristics of the anoxic/anaerobic/aerobic (reversed AAO) process were analyzed from two aspects including amplitude (relative sensitivity) and kinetics (response time) by using activated sludge mathematical model and step response method,so as to select the operating variables with high sensitivity and fast response to guide the process optimization. The results indicated that pollutants concentrations of the effluent were highly sensitive to influent flow rate (Qf),waste activated sludge (WAS), returned activated sludge (RAS) and mixed liquor recirculation (MLR). The nitrification process was most sensitive to WAS and RAS,while the DO was suitable for short-term adjustment of the effluent ammonia nitrogen. RAS,MLR and WAS were all had significant effects on total nitrogen and total phosphorus of the effluent. However,the step feeding ratio had an insignificant effect on the effluent pollutants concentrations and functional biomass in the reversed AAO process.
Characteristics of the anoxic/anaerobic/aerobic (reversed AAO) process were analyzed from two aspects including amplitude (relative sensitivity) and kinetics (response time) by using activated sludge mathematical model and step response method,so as to select the operating variables with high sensitivity and fast response to guide the process optimization. The results indicated that pollutants concentrations of the effluent were highly sensitive to influent flow rate (Qf),waste activated sludge (WAS), returned activated sludge (RAS) and mixed liquor recirculation (MLR). The nitrification process was most sensitive to WAS and RAS,while the DO was suitable for short-term adjustment of the effluent ammonia nitrogen. RAS,MLR and WAS were all had significant effects on total nitrogen and total phosphorus of the effluent. However,the step feeding ratio had an insignificant effect on the effluent pollutants concentrations and functional biomass in the reversed AAO process.
引文
[1]Metcalf&Eddy.Wastewater Engineering:Treatment and Reuse[M].4th ed.New York:McGraw-Hill Higher Education,2003.
[2]张波,高廷耀.生物脱氮除磷工艺厌氧/缺氧环境倒置效应[J].中国给水排水,1997,13(3):7-10.Zhang Bo,Gao Tingyao.Enhancement of nitrogen and phosphorus removal by reversal of anaerobic and anoxic zones sequence[J].China Water&Wastewater,1997,13(3):7-10(in Chinese).
[3]毕学军,张波.倒置A2/O工艺生物脱氮除磷原理及其生产应用[J].环境工程,2006,24(3):29-30.Bi Xuejun,Zhang Bo.The principal and full-scale application of reversed A2/O process for removing nitrogen and phosphorus[J].Environmental Engineering,2006,24(3):29-30(in Chinese).
[4]李鹏,毕学军,王军,等.常规和倒置A2/O工艺活性污泥微生物群落结构的比较[J].中国环境科学,2017,37(3):1137-1145.Li Peng,Bi Xuejun,Wang Jun,et al.Microbial diversity in activated sludges of conventional and reversed A2/Oprocesses[J].China Environmental Science,2017,37(3):1137-1145(in Chinese).
[5]张静,唐贤春,陈洪斌.倒置AAO-MBR处理黑水[J].环境工程学报,2016,10(7):3657-3663.Zhang Jing,Tang Xianchun,Chen Hongbin.Black water treatment with process of reversed AAO-MBR[J].Chinese Journal of Environmental Engineering,2016,10(7):3657-3663(in Chinese).
[6]Zhou Z,Wu Z C,Wang Z W,et al.Simulation and performance evaluation of the anoxic/anaerobic/aerobic process for biological nutrient removal[J].Korean JChem E,2011,28(5):1233-1240.
[7]郭玉梅,吴毅辉,郭昉,等.某污水厂A2O和倒置A2O工艺脱氮除磷性能分析[J].环境工程学报,2015,9(5):2185-2190.Guo Yumei,Wu Yihui,Guo Fang,et al.Analysis of nitrogen and phosphorus removal in A2O and inverted A2O processes in a wastewater treatment plant[J].Chinese Journal of Environmental Engineering,2015,9(5):2185-2190(in Chinese).
[8]Xu S,Bernards M,Hu Z.Evaluation of anaerobic/anoxic/oxic(A2/O)and reverse A2/O processes in biological nutrient removal[J].Water Environ Res,2014,86(11):2186-2193.
[9]周振,吴志超,王志伟,等.多模式厌氧/缺氧/好氧污水处理工艺的稳态与动态模拟[J].环境科学,2013,34(4):1442-1447.Zhou Zhen,Wu Zhichao,Wang Zhiwei,et al.Modeling and dynamic simulation of the multimode anaerobic/anoxic/aerobic wastewater treatment process[J].Environmental Science,2013,34(4):1442-1447(in Chinese).
[10]周振,胡大龙,吴志超,等.基于数学模型的多模式AAO系统运行优化研究[J].中国环境科学,2014,34(7):1734-1739.Zhou Zhen,Hu Dalong,Wu Zhichao,et al.Model-based optimization of the multimode anaerobic/anoxic/aerobic system[J].China Environmental Science,2014,34(7):1734-1739(in Chinese).
[11]周振,乔卫敏,蒋路漫,等.基于数学模型的AAO系统阶跃响应特性分析[J].中国环境科学,2015,35(2):442-447.Zhou Zhen,Qiao Weimin,Jiang Luman,et al.Modelbased analysis for step response characteristics of the anaerobic/anoxic/aerobic process[J].China Environmental Science,2015,35(2):442-447(in Chinese).
[12]Olsson G,Newell R B.Wastewater Treatment Systems:Modelling,Diagnosis and Control[M].London:IWAPublishing,1999.
[13]Cosenza A,Mannina G,Vanrolleghem P A,et al.Variancebased sensitivity analysis for wastewater treatment plant modelling[J].Sci Total Environ,2014,470/471:1068-1077.
[14]Lenhart T,Eckhardt K,Fohrer N,et al.Comparison of two different approaches of sensitivity analysis[J].Phys Chem Earth,2002,27(9/10):645-654.
[15]Gernaey K V,Jrgensen S B.Benchmarking combined biological phosphorus and nitrogen removal wastewater treatment processes[J].Control Eng Pract,2004,12(3):357-373.
[16]Kuba T,Wachtmeister A,van Loosdrecht M C M.Effect of nitrate on phosphorus release in biological phosphorus removal systems[J].Water Sci Technol,1994,30(6):263-269.
[2]张波,高廷耀.生物脱氮除磷工艺厌氧/缺氧环境倒置效应[J].中国给水排水,1997,13(3):7-10.Zhang Bo,Gao Tingyao.Enhancement of nitrogen and phosphorus removal by reversal of anaerobic and anoxic zones sequence[J].China Water&Wastewater,1997,13(3):7-10(in Chinese).
[3]毕学军,张波.倒置A2/O工艺生物脱氮除磷原理及其生产应用[J].环境工程,2006,24(3):29-30.Bi Xuejun,Zhang Bo.The principal and full-scale application of reversed A2/O process for removing nitrogen and phosphorus[J].Environmental Engineering,2006,24(3):29-30(in Chinese).
[4]李鹏,毕学军,王军,等.常规和倒置A2/O工艺活性污泥微生物群落结构的比较[J].中国环境科学,2017,37(3):1137-1145.Li Peng,Bi Xuejun,Wang Jun,et al.Microbial diversity in activated sludges of conventional and reversed A2/Oprocesses[J].China Environmental Science,2017,37(3):1137-1145(in Chinese).
[5]张静,唐贤春,陈洪斌.倒置AAO-MBR处理黑水[J].环境工程学报,2016,10(7):3657-3663.Zhang Jing,Tang Xianchun,Chen Hongbin.Black water treatment with process of reversed AAO-MBR[J].Chinese Journal of Environmental Engineering,2016,10(7):3657-3663(in Chinese).
[6]Zhou Z,Wu Z C,Wang Z W,et al.Simulation and performance evaluation of the anoxic/anaerobic/aerobic process for biological nutrient removal[J].Korean JChem E,2011,28(5):1233-1240.
[7]郭玉梅,吴毅辉,郭昉,等.某污水厂A2O和倒置A2O工艺脱氮除磷性能分析[J].环境工程学报,2015,9(5):2185-2190.Guo Yumei,Wu Yihui,Guo Fang,et al.Analysis of nitrogen and phosphorus removal in A2O and inverted A2O processes in a wastewater treatment plant[J].Chinese Journal of Environmental Engineering,2015,9(5):2185-2190(in Chinese).
[8]Xu S,Bernards M,Hu Z.Evaluation of anaerobic/anoxic/oxic(A2/O)and reverse A2/O processes in biological nutrient removal[J].Water Environ Res,2014,86(11):2186-2193.
[9]周振,吴志超,王志伟,等.多模式厌氧/缺氧/好氧污水处理工艺的稳态与动态模拟[J].环境科学,2013,34(4):1442-1447.Zhou Zhen,Wu Zhichao,Wang Zhiwei,et al.Modeling and dynamic simulation of the multimode anaerobic/anoxic/aerobic wastewater treatment process[J].Environmental Science,2013,34(4):1442-1447(in Chinese).
[10]周振,胡大龙,吴志超,等.基于数学模型的多模式AAO系统运行优化研究[J].中国环境科学,2014,34(7):1734-1739.Zhou Zhen,Hu Dalong,Wu Zhichao,et al.Model-based optimization of the multimode anaerobic/anoxic/aerobic system[J].China Environmental Science,2014,34(7):1734-1739(in Chinese).
[11]周振,乔卫敏,蒋路漫,等.基于数学模型的AAO系统阶跃响应特性分析[J].中国环境科学,2015,35(2):442-447.Zhou Zhen,Qiao Weimin,Jiang Luman,et al.Modelbased analysis for step response characteristics of the anaerobic/anoxic/aerobic process[J].China Environmental Science,2015,35(2):442-447(in Chinese).
[12]Olsson G,Newell R B.Wastewater Treatment Systems:Modelling,Diagnosis and Control[M].London:IWAPublishing,1999.
[13]Cosenza A,Mannina G,Vanrolleghem P A,et al.Variancebased sensitivity analysis for wastewater treatment plant modelling[J].Sci Total Environ,2014,470/471:1068-1077.
[14]Lenhart T,Eckhardt K,Fohrer N,et al.Comparison of two different approaches of sensitivity analysis[J].Phys Chem Earth,2002,27(9/10):645-654.
[15]Gernaey K V,Jrgensen S B.Benchmarking combined biological phosphorus and nitrogen removal wastewater treatment processes[J].Control Eng Pract,2004,12(3):357-373.
[16]Kuba T,Wachtmeister A,van Loosdrecht M C M.Effect of nitrate on phosphorus release in biological phosphorus removal systems[J].Water Sci Technol,1994,30(6):263-269.
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