Reclaimed Wastewater Liquid Level Sensor

chemical-feed
chemical-feed

Despite water treatment, over time, cooling towers will inevitably develop residual mineral buildup (calcium carbonate, magnesium, sodium) on the surfaces of their equipment, that periodically must be removed through the process of blow down. During which, water is drained from the tower, the equipment is cleaned, and freshly treated water is reintroduced into the tower. The removed water is either recirculated back into water treatment or used for another purpose. At this Midwest power plant, the blow down water is retained in an underground bulk storage tank, and reused for irrigating the acreage around the plant. Here, an EchoSpan ultrasonic level transmitter is mounted in the tank top. The non-contact sensor provides continuous level data to the PLC, which in turn, indicates the amount of reclaimed water available for irrigation.