XUMing-gang,HANShi-lei,LIWen,et al.Design of Water Quality Rapid Monitoring Equipment Based on Sequential Injection Analysis Technology[J].China Water & Wastewater,2022,38(14):133-138.
Design of Water Quality Rapid Monitoring Equipment Based on Sequential Injection Analysis Technology
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第14期
Page:
133-138
Column:
Date of publication:
2022-07-17
- Abstract:
- At present, water quality monitoring equipment has the problems of limited monitoring parameters, long monitoring period, high maintenance cost and long maintenance time, etc. A rapid monitoring equipment based on sequential injection analysis (SIA) technology, ultrasonic cavitation digestion method and fault diagnosis expert system was used to realize nine water quality parameters monitoring, including temperature (TEM), power of hydrogen (pH), turbidity (TURB), dissolved oxygen (DO), electrical conductivity (COND), total phosphorus (TP), total nitrogen (TN), ammonia nitrogen (NH3-N) and chemical oxygen demand (COD). The minimum detection limits of TP, TN, NH3-N and COD were 0.01, 0.05, 0.01 and 20 μg/mL, respectively. The relative standard deviations (RSD) were 0.56%-1.94%, 1.65%-1.96%, 0.62%-1.92% and 1.32%-2.92%, respectively, and the accuracy were -3.41%--1.15%, -3.27%-1.19%, -0.63%-2.12% and 0.60%-3.65%, respectively. The fault diagnosis expert system could accurately locate the fault source in the process of water quality monitoring. This system is of great significance to shorten the water quality monitoring time, reduce the equipment maintenance costs, and simplify the water quality testing process.
Last Update:
2022-07-17