生物除磷体系中生物标志物的管理初探

Study on the Management of Biological Markers in Biological Phosphorus Removal System

通过研究MDA、电解质渗出量和O2.-这3个损伤性指标,初步探讨了通过生物标志物来管理生物除磷体系的可行性。结果表明,MDA、电解质渗出量和O2.-这3个指标中,利用SOD电极在线检测O2.-的变化来管理除磷体系最为简便。从O2.-的变化规律得出当体系由好氧交替到厌氧时,前90min对释放磷尤为重要,即受氧胁迫时,系统产生O2.-浓度不能高于0.025mmol/g,否则磷的释放不会增加,进而影响系统的除磷效果。因此,可以通过在线监测O2.-的浓度变化来动态管理除磷体系。

Through the three injury index such as MDA, electrolyte leakage and O2. - , the feasibility in using biological markers to manage biological phosphorus removal system was discussed preliminarily. The results showed that, in the three indicators, online detection of 02. - changes using SOD electrode, to manage the phosphorus removal system was simple. From the changes of O2. -, the system from aerobic to anaerobic, the first 90min on the release of phosphorus is particularly important, that is, with the oxygen stress, the system produced O2. - concentration could not be higher than 0.025 mmol/g, otherwise, the release of phosphorus would not increase, then phosphorus removal was affected. So, dynamic management of phosphorus removal system could be conducted through on-line monitoring the changes of O2.