水质自动监测站运行性能评价

Operation Performance Evaluation for Water Quality Automatic Monitoring System (WQAMS)

水质自动监测系统运行过程中性能如何,如何开展性能评价目前参考性文献不多,作者结合所从事的工作开展了此方面的研究。结果表明:(1)参与评价的4个水站氨氮、高锰酸盐指数、总磷和总氮分析设备的准确度、精密度、检出限和相关性能满足现行技术要求;(2)参与评价的4个水站其水温准确度以及pH、溶解氧、电导率和浊度的精密度、准确度测试结果满足现行技术要求。从水站运行性能评价结果来看,监测数据准确性有保障,仪器设备性能良好。

At present, in the process of operation and maintenance of WQAMS, there is a lack of unified guidance documents on how to carry out performance evaluation, how to determine evaluation parameters and frequency, etc. The supervision and managing of the operation and maintenance of WQAMS was worked on over ten years, according to authors’ experience, a performance evaluation of the provincial class WAQMS was conducted. The results showed that the accuracy, precision, correlation coefficient(r>0.997) and detection limits(DL) of ammonia nitrogen(NH+4-N)/permanganate index(IMn)/total phosphorus(TP)/total nitrogen(TN) analyzer of the WAQMS for this test met the current technical requirements. the precision, accuracy results of pH, dissolved oxygen(DO), electrical conductivity(EC), water temperature and turbidity(Turb) analyzer of the WAQMS for this test met the current technical requirements. The results also showed that WAQMS for this test ran well, the quality of the monitoring data was good.