[1]何春求,周少奇.改良A2/O—MBR工艺仿真模拟及运行优化[J].中国给水排水,2022,38(15):90-97.
　HEChun-qiu,ZHOUShao-qi.Simulation of Modified A2/O-MBR Process and Its Operation Optimization[J].China Water & Wastewater,2022,38(15):90-97.
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改良A2/O—MBR工艺仿真模拟及运行优化

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第15期 页码: 90-97 栏目: 出版日期: 2022-08-01
Title:
Simulation of Modified A2/O-MBR Process and Its Operation Optimization
作者:
何春求1， 周少奇1,2
（1.华南理工大学 环境与能源学院，广东 广州 510006；2.贵州科学院，贵州 贵阳 550001）
Author(s):
HE　Chun-qiu1， ZHOU　Shao-qi1，2
（1. School of Environment and Energy， South China University of Technology， Guangzhou 510006， China； 2. Guizhou Academy of Sciences， Guiyang 550001， China）
关键词:
改良A2/O—MBR工艺;  低碳源城镇污水;  BioWin仿真模拟;  脱氮除磷;  运行优化
Keywords:
modified A2/O-MBR process;  low carbon source municipal wastewater;  BioWin simulation;  nitrogen and phosphorus removal;  operation optimization
摘要:
针对常规A2/O工艺在处理低碳源城镇污水时脱氮除磷效率较低的问题，设计开发了改良A2/O—MBR强化同步脱氮除磷中试系统。以广州某污水处理厂细格栅出水为原水，研究了该系统的处理效能及稳定性。结果表明，当进水COD、NH4+-N、TN、TP、SS分别为79~163、19.0~30.8、24.3~39.3、2.00~3.31、60~164 mg/L时，出水COD、NH4+-N、SS平均浓度分别为9.09、0.38、1.13 mg/L。增加缺氧池与厌氧池之间的循环后，TN去除率提高了11.5%，TP去除率提高了12.2%。基于BioWin软件建立了该系统的数学模型，利用校准好的模型对运行参数进行优化。优化结果表明，当硝化液回流比为200%、缺氧混合液回流比为150%、污泥回流比为100%、污泥龄为20 d、好氧池溶解氧浓度为1.25~1.75 mg/L、甲醇投加量为33 mg/L时，对污染物的去除效果最佳。
Abstract:
Conventional A2/O process has low removal efficiency of nitrogen and phosphorus in the treatment of low carbon source municipal wastewater. A pilot-scale modified A2/O-MBR process was thus designed and developed to enhance simultaneous nitrogen and phosphorus removal. The performance and stability of the system for the treatment of effluent from fine grids of a municipal wastewater treatment plant in Guangzhou were investigated. When COD, NH4+-N, TN, TP and SS in influent were 79-163 mg/L, 19.0-30.8 mg/L, 24.3-39.3 mg/L, 2.00-3.31 mg/L and 60-164 mg/L, respectively, the average COD, NH4+-N and SS in effluent were 9.09 mg/L, 0.38 mg/L and 1.13 mg/L, respectively. After increasing the circulation between anoxic tank and anaerobic tank, the removal efficiencies of TN and TP increased by 11.5% and 12.2%. A mathematical model of the process was established based on BioWin software, and the operating parameters were optimized by using the calibrated model. The best removal performance of pollutants was obtained when the following optimized parameters were adopted: nitrification liquid reflux ratio of 200%, anoxic mixed liquid reflux ratio of 150%, sludge reflux ratio of 100%, sludge age of 20 days, dissolved oxygen in aerobic tank of 1.25-1.75 mg/L and methanol dosage of 33 mg/L.
更新日期/Last Update: 2022-08-01