Water Distribution & Waste Water Treatment
- Kerman, CA
- Waste Water
- City of Kerman
A VFD-controlled water system decreases city power consumption and allows for remote monitoring of water flow. Maintaining an on-going relationship, iCAD has provided automated control systems for the city of Kerman's water and waste water faciities for nearly two decades.
City water system, consisting of multiple well locations, is controlled by using VFD's to minimize energy consumption. Based on water demand reflected in line pressures, wells are brought on line as required and operating pump speeds are adjusted to maintain optimum pressure-minimizing pumping costs.
At the city's waste water head works, holding tank levels are maintained by controlling start/stop of lift pumps and flow gate positioning.
Communications between remote sites and the central office is accomplished via radio telemetry. An integrated SCADA system records the operating status of pumps, flow rates, line pressures, VFD speeds, volumes pumped, water levels, gate positions, operating hours, system faults, alarm condition paging and alarm history. These variables are presented on a daily, weekly, and year-to-date basis and include historical trending. The system features automatic dial-up paging for maintenance under alarm conditions and provides remote control capability via modem and PC.
After project completion, the City of Kerman is able to remotely monitor and control the majority of its waste water treatment pumps. The VFD's, along with additional reporting functionality, allows the City of Kerman to reduce power consumption by 60%. The proactive alarm system on each VFD automatically alerts technicians of unsafe water pressures, making sure that no pump site will ever malfunction.