Ultrasonic Open Channel Flow Meter for Discharge Monitoring at Ningde Hospital Wastewater Treatment Plant [Dayu Electronics]
Medical wastewater discharge monitoring directly affects environmental safety and discharge compliance. The Ningde Hospital Wastewater Treatment Plant has adopted an ultrasonic open channel flow meter to establish a precise and stable automated wastewater flow monitoring system, fully meeting the strict requirements of the "Discharge Standard of Water Pollutants for Medical Organizations" (GB18466) for discharge monitoring, providing core technical support for compliant discharge control.
The device operates on the non-contact measurement principle, employing high-frequency ultrasonic pulse emission and reflection time-difference algorithms, combined with the open channel cross-sectional dimensions to accurately calculate flow rate. Measurement errors are well controlled, and the velocity adaptation range is broad, fully meeting the monitoring needs of fluctuating medical wastewater flow. Given the characteristics of hospital wastewater containing suspended solids and corrosive substances, the sensor is installed above the open channel without contacting the water, effectively avoiding the common issues of corrosion and clogging in traditional contact-type devices, thereby extending equipment service life and ensuring a low annual failure rate.
Core monitoring functions achieve efficient integration through standardized interfaces: the 4-20mA analog signal can be stably transmitted to the central control system, while simultaneously supporting Modbus RTU digital communication for real-time uploading of instantaneous and cumulative flow data. The system allows preset flow thresholds; when abnormal flow is detected, an alarm is automatically triggered, helping staff quickly identify and resolve faults.
As key equipment for discharge compliance, the ultrasonic open channel flow meter not only provides real-time data reference for optimizing wastewater treatment processes, but also serves as a core basis for discharge ledger records, meeting environmental authorities' management requirements for self-monitoring and record-keeping. By accurately measuring wastewater discharge volumes, it supports refined management of the hospital's wastewater treatment plant, ensuring the authenticity and traceability of discharge data while reducing the labor intensity and error risks of manual monitoring, making it the preferred solution for compliant discharge monitoring in medical institutions.