TECHNOLOGY: Solution For Treatment Plant
Recent Western Cape Business News
FESTO Process Automation recently supplied a complete process automation solution to the newly constructed Kleinbrak River water treatment works, located in the Mossel Bay Municipality. The 15 mega litre per day capacity upgrade of the plant was completed in December 2009.
Festo was contracted by the project’s main mechanical contractor, Eigenbau, and was the main sub-supplier for the raw water flow control and filter automation and control equipment. The scope of work of the project included the design, supply, installation, testing and commissioning of new raw water flow control and filter plant automation equipment.
The solution included equipment for most of the plant, including raw water inlet. The raw water inlet features modulating flow control and is accurately controlled via the new DFPI modulating linear actuator. The DFPI is a completely enclosed pneumatic cylinder featuring an integral positioner and 4-20mA input.
Solutions were also provided for the rapid gravity filter control system, including filter inlet and outlet, backwash inlet and outlet, air scour inlet, and air vent valves. The equipment included linear actuators and SME proximity sensors, DAPS semi rotary actuators, MPA valve terminals and tubing and pipe work for compressed air.
The MPA valve terminals were selected because they offer the latest technology advancements in solenoid valve technology. They are especially suited to this type of application, whereas actuated mounted solenoid valves are prone to weathering and corrosion. These valve terminals are also compact in design and feature far less cabling – with only a single 24V DC multi-core cable required for each terminal.
This pneumatic control system was selected over an electrically operated system as it presented significant cost savings.
In addition, Festo lent its expertise and experience in the process automation industry to deliver the most efficient solution to the project.
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