LIChen,LICheng,WUXu,et al.On-line Monitoring and Diagnosis of Anaerobic Treatment Process for Nitrobenzene Wastewater[J].China Water & Wastewater,2022,38(13):71-77.
On-line Monitoring and Diagnosis of Anaerobic Treatment Process for Nitrobenzene Wastewater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第13期
Page:
71-77
Column:
Date of publication:
2022-07-01
- Keywords:
- nitrobenzene wastewater; anaerobic treatment process; on-line monitoring; operation status diagnosis
- Abstract:
- 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.
Last Update:
2022-07-01