Today’s modern water and wastewater treatment plants are employing advanced technologies, reverse osmosis for instance, to provide clean potable water across India. These technologies call for accurate information and precise flow control throughout the plant, which is difficult to achieve by manual operation. This has resulted in the increased use of electric actuators to operate valves installed throughout the plant, right from intake stage to the pumping station for distribution.
In recent years, many water and wastewater treatment plants have realized the importance of process automation and asset management to achieve consistent quality of water, reduce operating cost of plant, prevent plant shutdown and reduce diagnostic time. In the past, basic actuators were installed for automation of valves to perform the basic function of ‘open and close’ to control the flow of liquids across the plant and get timely valve position feedback for monitoring.
Actuators for the Water Industry
Today, the shortage of suitable water resources in some states and scarcity of clean water have led water companies to either use various water treatment/desalination technologies to convert unusable water into potable water or reduce wastage by expanding and modernizing their existing capacity. Therefore, these water companies are investing heavily in plant automation systems to maximize productivity by efficiently managing all processes, which also lead to reduction in operating costs.
With the growing importance of electric actuators in the water and wastewater sector, the whole concept of actuation is changing and technologies like microcontroller-based actuator controls, actuators with Fieldbus communication etc, are gaining traction.
With emphasis on increased equipment reliability to deliver best-in-class process control solutions for maximizing productivity while reducing costs, actuation solution providers are recommending the use of electric actuators equipped with microcontroller-based controls and Fieldbus communication protocols.
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