Unrestricted mounting flowmeter improves process for wastewater facility

In Oregon, just along the Umatilla riverbed is the City of Pendleton’s Wastewater Treatment Resource Recovery Facility (WWTRRF) which serves a population of 17,000 people and treats roughly 2.5 million gallons of water per day (GPD).

Like all wastewater treatment facilities, the City of Pendleton WWTRRF faces the daily challenge of maintaining water safety and quality for the city while improving energy consumption and meeting city, state, and national regulations. With reliable measurement, technicians can better control the process, make better decisions, implement predictive maintenance, and save both money and energy.


Facing flow measurement challenges due to mounting limitations

Before implementing the Promag W 0xDN, the City of Pendleton wastewater treatment facility was unable to obtain flow measurements for process water used within the facility. They were estimating the flow rate and amount of water coming through but were not able to get exact numbers. This was a difficult spot for a flowmeter because there was not a sufficient straight run — instead, the flow runs vertical through a 90-degree elbow then connects to a full port valve. Typically, electromagnetic flowmeters require straight pipe run of 3-5 pipe diameters upstream of the meter and 1-2 diameters downstream of the meter. Because of the limited space, it also wasn’t an option to increase the pipe run. The other possibility would be to install an electromagnetic reduced bore flowmeter; however, these meters create a pressure drop resulting in higher energy costs and lower plant efficiency.