Construction and stable control of simulation system for volume-adjustable multi-stage AO process
LV Zhi-chao1,2, SONG Xiu-lan1, XI Yu-he2, SU Xiao-li2, DONG Wen-yi2, SUN Fei-yun2
1. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; 2. School of Civil and Environmental Engineering, Harbin Institute of Technology(Shenzhen), Shenzhen 518000, China
Abstract: In order to monitor key water quality parameters in the biochemical treatment of sewage in real time and to adjust the stability in time under the impact of the influent load,a multi-stage AO process with adjustable volume runs continuously at a pilot scale.The correlation and conversion between the process parameters (DO,ORP and pH) of each unit monitored instantaneously and the delayed water quality parameters (COD,ammonia nitrogen and total nitrogen,etc.) are explored,and ASM2d model simulation data are investigated.A simulation system is constructed to ensure the stable operation and regulation of multi-stage AO process at a pilot level.Results show that instantaneous parameters such as pH,ORP,T,DO of different units in the process are highly correlated with key water quality indexes (COD,total nitrogen,total phosphorus,ammoniacal-nitrogen and nitrate-nitrogen etc.) in each stage of the process.Through simulation software database optimization and fitting,a real-time process control guidance scheme can be obtained,real-time process control and parameter correction can be achieved,and the optimized operation process ensures the quality of the effluent water quality to meet the local discharge standards.
吕志超, 宋秀兰, 席玉鹤, 苏小莉, 董文艺, 孙飞云. 可调容积型多级AO工艺模拟仿真系统的构建及其稳定调控研究[J]. 现代化工, 2021, 41(4): 194-199.
LV Zhi-chao, SONG Xiu-lan, XI Yu-he, SU Xiao-li, DONG Wen-yi, SUN Fei-yun. Construction and stable control of simulation system for volume-adjustable multi-stage AO process. Modern Chemical Industry, 2021, 41(4): 194-199.
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