High-Precision Monitoring System for Turbidity of Drinking Water by Using Scattering Method

To enhance the accuracy of water-quality turbidity detection and address the challenges associated with drinking water safety, this study proposes a high-precision turbidity sensor detection approach. However, in practical water-quality monitoring, the design of the water-quality turbidity-monitoring system encounters difficulties arising from air bubbles in the water affecting beam refraction, excessive beam scattering angles impacting detection accuracy, and the need for precise water-quality turbidity measurements. To tackle these issues, this study presents a novel design comprising a pressurized air-removing device and an innovative mechanical structure, effectively eliminating difficult-to-remove air bubbles in the water channel. Furthermore, a lens with calibration is devised to effectively address the problem of excessive beam scattering angles. Based on the 90(degrees) scattering method, the designed sensor achieves an impressive detection limit of 0.001 nephelometric turbidity unit (NTU) and a concentration range of 0-100 NTU. The results demonstrate a significant improvement in the accuracy and interference reduction ability of the sensor designed in this study. The developed high-precision turbidity sensor offers promising potential for advancing water-quality monitoring technologies and ensuring safe drinking water for the public.