硝基苯废水厌氧处理工艺的在线监测与诊断  

On-line Monitoring and Diagnosis of Anaerobic Treatment Process for Nitrobenzene Wastewater

作　　者：李辰 李诚 吴旭 董方[3] LI Chen;LI Cheng;WU Xu;DONG Fang(Tianjin Rongtai Water Co.Ltd.,Tianjin 300393,China;Tianjin Huabo Water Co.Ltd.,Tianjin 300040,China;College of Civil Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]天津市融泰水务有限公司,天津300393 [2]天津市华博水务有限公司,天津300040 [3]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《中国给水排水》2022年第13期71-77,共7页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51308172)。

摘　　要：硝基苯是一种广泛应用于工业以及化工生产中的难降解有毒物质。厌氧处理工艺可以降解废水中的硝基苯,但由于厌氧微生物敏感性强,导致厌氧工艺运行很不稳定,需要建立可靠的诊断方法,进而通过及时有效的控制实现厌氧反应器的高效稳定运行。为此,研究了厌氧工艺处理硝基苯废水的冲击影响,分析了不同的状态指标,进而提供合理的工艺诊断。结果表明,采用厌氧工艺处理硝基苯难降解废水时,在不同强度的冲击下气相和液相各参数都具有特征响应性,其中气相氢分压的敏感性最强,比其他参数提前2~10 h响应,可以作为快速预警参数。结合其他参数的特征响应,可以对硝基苯废水厌氧处理工艺进行快速准确的诊断预测,从而构建出难降解废水厌氧处理的通用智能诊断控制方法。Nitrobenzene(NB)is a kind of refractory and toxic substance which is widely used in industrial and chemical production.Anaerobic treatment process is capable of degrading NB in wastewater.However,the strong sensitivity of anaerobic microorganisms leads to instable operation of the process.Therefore,it is necessary to establish a reliable diagnostic method to achieve efficient and stable operation of anaerobic reactor through timely and effective control.The impact of NB on anaerobic wastewater treatment process was investigated,and different state indexes were analyzed,so as to provide reasonable process diagnosis.In the treatment of nitrobenzene refractory wastewater,each parameter of gas phase and liquid phase had characteristic response under different shock intensities,among which the gas phase hydrogen partial pressure was the most sensitive and responded 2-10 hours earlier than other parameters,which could be selected as a quick warning parameter.Combined with the characteristic response of other parameters,the diagnosis and prediction of NB wastewater anaerobic treatment process could be carried out quickly and accurately,so as to build a general intelligent diagnosis and control method for anaerobic treatment of refractory wastewater.

关 键 词：硝基苯废水 厌氧处理工艺 在线监测 运行状态诊断 

分 类 号：TU992[建筑科学—市政工程]