Application and Maintenance Guide for Flow Meters in Water Treatment Systems

In the field of water treatment, flow meters are essential equipment for achieving process control, optimizing resource utilization, and ensuring compliance with emission standards. Their accuracy directly affects treatment efficiency, energy consumption costs, and the rate at which environmental protection targets are met. Below are key application scenarios and scientific maintenance strategies.

In the field of water treatment, flow meters are used to achieve... Process Control, Resource Optimization, and Compliance Emissions The core equipment. Its precision directly affects processing efficiency, energy consumption costs, and compliance with environmental standards. Below are the key application scenarios and scientific maintenance strategies:

I. Core Application Scenarios

Precise dosing of pharmaceutical agents
- Key requirements The dosing accuracy of sodium hypochlorite, flocculants, and other chemicals must reach ±0.5 mg/L.
- Technical Solution The Coriolis mass flowmeter is interlocked with a peristaltic pump and controlled in real time using a PID algorithm, ensuring that chemical consumption remains within acceptable limits and preventing excessive waste (for example, one wastewater treatment plant achieved a 12% annual reduction in chemical costs).
Energy-saving control of aeration systems
- Data-driven The thermal gas flowmeter monitors the blower’s air volume (with an accuracy of ±2%) and dynamically adjusts it based on dissolved oxygen feedback, achieving a 10-15% reduction in energy consumption.
- Case The 100,000-ton-per-day wastewater treatment plant saves over 280 MWh of electricity annually, equivalent to reducing CO₂ emissions by 167 tons.
Inlet and Outlet Compliance Monitoring
- Large-diameter measurement Pipes with a diameter of DN2000 or larger shall be equipped with insertion-type ultrasonic flow meters (in accordance with EN 14154 standard), featuring a measurement range ratio of 100:1 and capable of covering peak flow rates during both dry and rainy seasons.
- Data evidence storage Blockchain-based real-time on-chain data meets the electronic record tamper-proofing requirements stipulated in the Water Pollution Prevention and Control Law.
Sludge Return Flow Control
- High-solid-content medium Multi-electrode electromagnetic flowmeter (rubber lining + 2 MHz excitation) can withstand a solid content of up to 15%. Combined with an ultrasonic sludge interface meter, the return accuracy is ±3%.