基于数学模型的多模式AAO系统夏季高温运行优化研究
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摘要
以多模式厌氧/缺氧/好氧(AAO)工艺为研究对象,通过工艺模型构建与模拟仿真开展夏季高温条件下AAO、倒置AAO(RAAO)和厌氧/好氧(AO)3种运行模式优选与工况条件优化研究。对比多模式AAO系统夏季高温条件下3种运行模式,发现AAO模式对污染物的去除效率要明显高于RAAO和AO模式,特别是对于生物除磷而言。在运行模式筛选的基础上,通过混合液回流比(MLR)和污泥回流比(RAS)优化确定了《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A和一级B约束条件下AAO工艺的达标运行区域,最佳运行工况为污泥龄(SRT)=8 d,MLR=175%,RAS=50%,优化工况能够显著改善出水水质。
This work aims at optimizing performance of the multimode anaerobic/anoxic/aerobic(AAO) system, which could be flexibly operated under AAO, reversed AAO and anaerobic/aerobic(AO) modes, based on process model construction and modeling at high temperature. The AAO mode showed higher pollutants removal efficiency than reversed AAO and AO modes, especially for biological phosphorus removal. Furthermore, an operating region conforming to required discharge standards(Grade 1A OR Grade 1B for GB 18918—2002) was established for the AAO mode by regulating returned activated sludge(RAS) and mixed liquor recirculation(MLR). Optimal condition was obtained using MLR ratio of 175%, RAS ratio of 50%, and SRT of 8 d. Dynamic simulation results showed that under optimized operating condition, effluent quality was significantly improved.
This work aims at optimizing performance of the multimode anaerobic/anoxic/aerobic(AAO) system, which could be flexibly operated under AAO, reversed AAO and anaerobic/aerobic(AO) modes, based on process model construction and modeling at high temperature. The AAO mode showed higher pollutants removal efficiency than reversed AAO and AO modes, especially for biological phosphorus removal. Furthermore, an operating region conforming to required discharge standards(Grade 1A OR Grade 1B for GB 18918—2002) was established for the AAO mode by regulating returned activated sludge(RAS) and mixed liquor recirculation(MLR). Optimal condition was obtained using MLR ratio of 175%, RAS ratio of 50%, and SRT of 8 d. Dynamic simulation results showed that under optimized operating condition, effluent quality was significantly improved.
引文
[1] 周振, 唐建国, 张爱平, 等. 城镇污水处理厂强化硝化技术现状分析[J]. 中国给水排水, 2013, 29(20): 5-8.
[2] Zhou Z, Shen X L, Jiang L M, et al. Modeling of multimode anaerobic/anoxic/aerobic wastewater treatment process at low temperature for process optimization[J]. Chemical Engineering Journal, 2015, 281:644-650.
[3] Yang M, Sun P D, Wang R Y, et al. Simulation and optimization of ammonia removal at low temperature for a double channel oxidation ditch based on fully coupled activated sludge model (FCASM): a full-scale study[J]. Bioresource Technology, 2013, 143:538-548.
[4] 张智, 李柏林, 相欣奕, 等. 处理低温低碳源城市污水的A/A/O氧化沟工艺脱氮运行工况优化[J]. 环境工程学报, 2012, 6(8): 2565-2570.
[5] 张玲, 彭党聪, 常蝶. 温度对聚磷菌活性及基质竞争的影响[J]. 环境科学, 2017, 38(6): 2429-2434.
[6] 樊香妮. 温度对强化生物除磷(EBPR)系统处理性能及种群关系的影响[J]. 西安: 西安建筑科技大学, 2016.
[7] 姜体胜, 杨琦, 尚海涛, 等. 温度和pH值对活性污泥法脱氮除磷的影响[J]. 环境工程学报, 2007, 1(9): 10-14.
[8] 戴兴春. 城市污水A2/O工艺调控_监控体系优化与异常修复技术研究[D]. 上海: 华东师范大学, 2008.
[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.
[10] Hulsbeek J J, Kruit J, Roeleveld P J, et al. A practical protocol for dynamic modelling of activated sludge systems[J]. Water Science and Technology, 2002, 45(6): 127-136.
[11] Sin G, Hulle S W H V, Pauw D J W D, et al. A critical comparison of systematic calibration protocols for activated sludge models: A SWOT analysis[J]. Water Research, 2005, 39(12): 2459-2474.
[12] Makinia J, Rosenwinkel K H, Spering V. Long-term simulation of the activated sludge process at the Hanover-Gümmerwald pilot WWTP[J]. Water Research, 2005, 39(8): 1489-1502.
[13] 周振, 吴志超, 顾国维, 等. 沉淀池污泥层高度的模拟与控制[J]. 中国环境科学, 2008, 28(3): 274-278.
[14] 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 Journal of Chemical Engineering, 2011, 28(5): 1233-1240.
[15] Zhou Z, Wu Z C, Wang Z W, et al. COD fractionation and parameter estimation for combined sewers by respirometric tests[J]. Journal of Chemical Technology and Biotechnology, 2008, 83(12): 1596-1601.
[16] Henze M, Gujer W, Mino M, et al. Activated Sludge Models ASM1, ASM2, ASM2d and ASM3[M]. London: IWA Publishing, 2000.
[17] Antoniou P, Hamilton J, Koopman B, et al. Effect of temperature and ph on the effective maximum specific growth rate of nitrifying bacteria[J]. Water Research, 1990, 24(1): 97-101.
[18] Panswad T, Doungchai A, Jin A. Temperature effect on microbial community of enhanced biological phosphorus removal system[J]. Water Research, 2003, 37(2): 409-415.
[19] 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.
[20] 彭党聪, 樊香妮, 张玲, 等. 温度对生物除磷系统微生物种群关系及动力学的影响[J]. 环境工程学报, 2017, 11(4): 2091-2096.
[21] 彭党聪, 张晓霞, 樊香妮, 等. 温度对SBR强化生物除磷工艺除磷性能的影响[J]. 环境工程学报, 2016, 10(11): 6106-6110.
[22] 唐旭光, 王淑莹, 张婧倩. 温度变化对生物除磷系统的影响[J]. 化工学报, 2011, 62(4): 1103-1109.
[23] 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.
[24] Tchobanoglous G, Burton F L, Stensel H D. Wastewater Engineering: Treatment and Reuse. (4th ed)[M]. New York: Metcalf & Eddy Inc., 2003.
[2] Zhou Z, Shen X L, Jiang L M, et al. Modeling of multimode anaerobic/anoxic/aerobic wastewater treatment process at low temperature for process optimization[J]. Chemical Engineering Journal, 2015, 281:644-650.
[3] Yang M, Sun P D, Wang R Y, et al. Simulation and optimization of ammonia removal at low temperature for a double channel oxidation ditch based on fully coupled activated sludge model (FCASM): a full-scale study[J]. Bioresource Technology, 2013, 143:538-548.
[4] 张智, 李柏林, 相欣奕, 等. 处理低温低碳源城市污水的A/A/O氧化沟工艺脱氮运行工况优化[J]. 环境工程学报, 2012, 6(8): 2565-2570.
[5] 张玲, 彭党聪, 常蝶. 温度对聚磷菌活性及基质竞争的影响[J]. 环境科学, 2017, 38(6): 2429-2434.
[6] 樊香妮. 温度对强化生物除磷(EBPR)系统处理性能及种群关系的影响[J]. 西安: 西安建筑科技大学, 2016.
[7] 姜体胜, 杨琦, 尚海涛, 等. 温度和pH值对活性污泥法脱氮除磷的影响[J]. 环境工程学报, 2007, 1(9): 10-14.
[8] 戴兴春. 城市污水A2/O工艺调控_监控体系优化与异常修复技术研究[D]. 上海: 华东师范大学, 2008.
[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.
[10] Hulsbeek J J, Kruit J, Roeleveld P J, et al. A practical protocol for dynamic modelling of activated sludge systems[J]. Water Science and Technology, 2002, 45(6): 127-136.
[11] Sin G, Hulle S W H V, Pauw D J W D, et al. A critical comparison of systematic calibration protocols for activated sludge models: A SWOT analysis[J]. Water Research, 2005, 39(12): 2459-2474.
[12] Makinia J, Rosenwinkel K H, Spering V. Long-term simulation of the activated sludge process at the Hanover-Gümmerwald pilot WWTP[J]. Water Research, 2005, 39(8): 1489-1502.
[13] 周振, 吴志超, 顾国维, 等. 沉淀池污泥层高度的模拟与控制[J]. 中国环境科学, 2008, 28(3): 274-278.
[14] 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 Journal of Chemical Engineering, 2011, 28(5): 1233-1240.
[15] Zhou Z, Wu Z C, Wang Z W, et al. COD fractionation and parameter estimation for combined sewers by respirometric tests[J]. Journal of Chemical Technology and Biotechnology, 2008, 83(12): 1596-1601.
[16] Henze M, Gujer W, Mino M, et al. Activated Sludge Models ASM1, ASM2, ASM2d and ASM3[M]. London: IWA Publishing, 2000.
[17] Antoniou P, Hamilton J, Koopman B, et al. Effect of temperature and ph on the effective maximum specific growth rate of nitrifying bacteria[J]. Water Research, 1990, 24(1): 97-101.
[18] Panswad T, Doungchai A, Jin A. Temperature effect on microbial community of enhanced biological phosphorus removal system[J]. Water Research, 2003, 37(2): 409-415.
[19] 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.
[20] 彭党聪, 樊香妮, 张玲, 等. 温度对生物除磷系统微生物种群关系及动力学的影响[J]. 环境工程学报, 2017, 11(4): 2091-2096.
[21] 彭党聪, 张晓霞, 樊香妮, 等. 温度对SBR强化生物除磷工艺除磷性能的影响[J]. 环境工程学报, 2016, 10(11): 6106-6110.
[22] 唐旭光, 王淑莹, 张婧倩. 温度变化对生物除磷系统的影响[J]. 化工学报, 2011, 62(4): 1103-1109.
[23] 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.
[24] Tchobanoglous G, Burton F L, Stensel H D. Wastewater Engineering: Treatment and Reuse. (4th ed)[M]. New York: Metcalf & Eddy Inc., 2003.