基于异同移动平均线指标的氨氮厌氧工艺诊断研究  

Diagnostic study of the anaerobic process for ammonia nitrogen based on dissimilar moving average indicators

作　　者：董方[1] 王成[1] 王菁菁 DONG Fang;WANG Cheng;WANG Jingjing(School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009

出　　处：《安全与环境学报》2024年第3期1192-1199,共8页Journal of Safety and Environment

基　　金：国家自然科学基金青年资金资助项目(51308172)。

摘　　要：合理的诊断方法和控制策略是实现厌氧处理工艺安全性和稳定性的必要手段。为了对氨氮厌氧工艺的处理过程进行准确的诊断与控制,基于在线监测系统对氨氮扰动冲击情境下上流式厌氧污泥床(Up-flow Anaerobic Sludge Blanket,UASB)反应器的气液相参数进行实时监测,并根据指数平滑异同移动平均算法,建立各参数相对应的异同移动平均线指标。根据各参数的指标响应特征与反应器之间的状态关系,通过建立诊断规则,构建氨氮厌氧工艺诊断推理数据库。诊断推理数据库结果显示,气相参数指标整体上比液相参数指标响应快,适合作为识别氨氮扰动抑制发生的敏感性指标;综合气相和液相多参数异同移动平均线指标的响应特征,不仅能够对扰动抑制程度和厌氧生化系统的恢复情况做出准确、全面的诊断,还能够提供快速的预警和有效的控制策略。Reasonable diagnostic methods and control strategies are necessary to achieve stability and efficiency in the anaerobic treatment process.To accurately diagnose and effectively control the anaerobic process of ammonia nitrogen,this study conducted real-time monitoring of the gas phase parameters and liquid phase parameters of the UASB reactor under the ammonia disturbance impact situation based on an online monitoring system.Due to the noise fluctuation of gas phase parameters and liquid phase parameters,traditional monitoring indicators cannot accurately reflect the status information of the reactor,while the exponential smoothing moving average algorithm can extract and process the data.By establishing the moving average convergence and divergence indicator of the gas phase parameters and liquid phase parameters,the abnormal fluctuations caused by accidental factors can be alleviated,the irregular noise information of related index parameters can be filtered out,and the wrong judgment and excessive response of the system can be reduced.According to the moving average convergence and divergence indicator response characteristics of the gas-liquid phase parameters and the relationship between the state of the reactor,a diagnostic inference database can be constructed by establishing diagnostic rules for the ammonia nitrogen disturbance shock test.The diagnostic inference database of the ammonia anaerobic process contained the indicator response characteristics of the gas and liquid phase parameters of anaerobic reactors.According to the gas-liquid phase parameters characteristics of the indicator analysis,it shows that the gas phase parameters responded faster than the liquid phase parameters on the whole,which is suitable to be used as a sensitivity index to identify the occurrence of ammonia disturbance inhibition.In addition,In the middle and late stages of the shock phase,the comprehensive response of gas-phase and liquid-phase moving average convergence and divergence indicators can not only make an accurate

关 键 词：环境工程学 氨氮厌氧工艺 异同移动平均线指标 诊断推理数据库 

分 类 号：X703[环境科学与工程—环境工程]