The IQ SensorNet system in this case study consists of the following solutions:
• IQ SensorNet Controller • IQ 700 ViSolid Total Suspended Solids sensor • MIQ/PS power supply module • MIQ/CR3 output module • WA 700/10 retractable armature
Inside the Douglas L. Smith Middle Basin Plant
Results The monitoring system at the facility has been operating reliably with minimal maintenance requirements. The UltraClean™ ultrasonic cleaning system effectively prevents fouling, without a wiper or any replaceable parts. Sensors are removed from the process and manually cleaned every 6 months. The long-term reliability of the measurement is important for automation. The design of the monitoring system is also important. According to Nolkemper, “The MLSS and RAS values from the sensors cancel each other out in the algorithm. It isn’t the absolute accuracy that is critical as much as the consistency.” The IQ SensorNet system has also been successfully implemented at two other facilities owned by the utility. The Operations Engineer has been a steady, guiding force but admits that success cannot be achieved without team involvement when he states, “Proper implementation [of process monitoring and automation] requires a long-term relationship – champion it, believe in it, get it right, then get the operators on board.” This attitude has produced award-winning performance. Two of the facilities owned by the utility have earned Platinum status from the National Association of Clean Water Agencies (NACWA) for excellence in permit compliance.
IQ 700 ViSolid total suspended solids sensor
ViSolid sensor insertion mount in RAS pipeline
IQ SensorNet
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