1. Application background

A large sewage treatment plant has a daily treatment capacity of 100,000 tons and uses the A²/O biological treatment process. During the production process, precise flow monitoring of incoming water, effluent, and return sludge is required to achieve process control and environmental compliance.

2. Difficulties in measurement

• Complex media: sewage contains a large amount of suspended solids and fiber impurities, which can easily cause instrument clogging.

• Highly corrosive: Sewage contains corrosive gases such as hydrogen sulfide, which places high demands on parts that come into contact with media.

• The working conditions are changeable: the flow rate fluctuates greatly, from dozens of cubic meters to thousands of cubic meters per hour

• Restricted installation conditions: some pipelines are buried underground or the space is narrow, making maintenance difficult

3. Solution

Select Doweston FTE series electromagnetic flow meter, specific configuration: DN200 caliber, PTFE lining, titanium electrode, 24V DC power supply, 4-20mA + RS485 Modbus output, IP67 protection level.

4. Application effect

• ✅ Flow measurement is accurate and stable, and the data is reliable

• ✅ Operation failure rate reduced by more than 90%

• ✅ Maintenance costs have dropped significantly

• ✅ Provides accurate data support for process optimization

• ✅ Help companies pass environmental protection acceptance

5. Customer evaluation

"The Doweston electromagnetic flow meter has been running in our sewage treatment plant for more than a year and has performed very stably. Especially under low temperature conditions in winter, it still maintains accurate measurement performance."