Rapid social and economic developments, as well as urbanisation, have led to the supply of clean water becoming a critical issue worldwide. In recent years, water quality standards have been tightened and with it, the requirements for water treatment have risen substantially.
Consequently, automation for the water treatment industry faces new challenges in the growing complexity of the automation processes and system structures. Besides improving production quality and lowering costs, it is equally important to save energy and reduce carbon emissions.
Delta’s AH500 series for advanced control
Delta’s advanced control, drive and automation products provide users with complete, effective and integrated wastewater treatment solutions. This is particularly the case with the development of the AH500 series mid-range PLCs.
The AH500 facilitates a flexible configuration while providing stability in the system, and with versatile master, slave and distant transmission solutions, they adapt to the requirements, now favoured in the wastewater treatment process. These PLCs are designed to perform the automated control to achieve flexible operation for the lift pumps, mesh screens and many other devices.
Perhaps one of the most vital factors in water treatment is coagulation and flocculation. The AH500 PLCs collect the turbidity signals of the inflow and outflow. Based on the turbidity level and water flow, they control the variable frequency of the measuring pumps by the PID auto-tuning function and adjust the amount of coagulants and flocculants used. In addition, the key parameters and operation of the facilities can be monitored in real time allowing for better overall management of the plant.
For water supply pumping stations, the AH500 PLCs facilitate the control of pumping valves, operation of the power distribution system, and the monitoring of power switches.
Most crucially, when it comes to water treatment systems, they are open, compatible and extendable – key attributes when it comes to managing costs. Allied to this is the overall user friendliness of the solution together with the ease of maintenance.
The AH500 series PLCs from Delta provide a high quality treatment solution with lower labour intensity, easier management, increased efficiency and economy of resources.
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