Flow Monitoring of Wastewater for a Sewage Treatment Plant

This application note highlights how a municipal water utility successfully implemented the KROHNE OPTISONIC 6300 ultrasonic clamp-on flowmeter to monitor raw sewage inflow at a wastewater treatment plant. Because cutting into the aging, bitumen-coated carbon steel pipeline risked leakage and mechanical stress, a non-intrusive solution was essential. The non-invasive meter serves as a robust, cost-effective service tool to cross-check pump efficiency and verify inline meter readings. By utilizing a Z-mode measurement setup with stainless steel sensor rails, the system was quickly installed without any process interruption or pipe modification. Ultimately, the setup enabled the facility to identify a faulty pump, ensuring high plant availability, preventing spillage, and improving overall operational efficiency.