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Watson-Marlow has revealed that the Palmachim desalination plant in Israel is utilising a total of 30 baseplate-mounted pumps for metering and dosing applications.

Watson-Marlow has a history of supplying pumps to conventional water and waste treatment plants for metering and dosing the chemicals that are used to remove suspended particles, minerals and contaminants, and to maintain pH and disinfect the water.

The Palmachim control system is based on the Profibus DP communication protocol, which is used to operate sensors and actuators (pumps) from a centralised control centre.

The timing of the requirement at this site coincided with Leroy Somer’s introduction of the Profibus option for its Varmeca 20 drive unit.

Varmeca drives are frequently used on Watson-Marlow 500 and 600 series pumps and in this instance, enabled the company to supply the site’s requirements exactly.

The first stage in the process is pre-treatment of the raw seawater, which changes the consistency of the water and is similar to the filtration in a water treatment plant.

Next, the filtered water is pumped through microfilters before it is pushed through the reverse membrane filters, at pressures around 65lb/in2 This removes the salt from the seawater.

The water from the reverse osmosis stage is clean, safe and pleasant to drink.

Typically around 50 per cent of the feedwater becomes product water.

The other 50 per cent is returned to the sea.

A post-treatment stage of the product water, involves adding some minerals, such as calcium, to improve the taste and stability of the soft processed water.

In keeping with other treatment methods, chlorine is also added for cleansing and maintenance of the distribution system.

Since the original 30 Watson-Marlow pumps were installed at the Palmachim desalination plant, a further quantity have been ordered and this order will be fulfilled with pumps from the new Profibus-cased pumps range, providing easy installation, greater speed control and a smaller footprint.

Watson-Marlow Fluid Technology Group

Watson-Marlow Fluid Technology Group (WMFTG) is the world leader in niche peristaltic and sinusoidal pumps and associated fluid path technologies. Founded on nearly 60 years of supplying engineering and process expertise and with over one million pumps installed worldwide, our pumps are tried, tested and proven to deliver.

WMFTG is a wholly owned subsidiary of Spirax-Sarco Engineering plc (LSE: SPX), a global organisation employing approximately 4,800 people worldwide. Watson-Marlow Fluid Technology Group comprises nine established brands, each with their own area of expertise, but together offering our customers an unrivalled breadth of solutions for their pumping applications:

  • Watson-Marlow Pumps: peristaltic tube pumps for biopharm and process industries
  • Watson-Marlow Tubing: precision tubing for pumping and other purposes, in a range of materials
  • Bredel: high flow, high-pressure hose pumps
  • Alitea: unique peristaltic solutions for OEM customers
  • Flexicon: aseptic filling and capping systems
  • MasoSine: gentle sinusoidal pumps for food, chemical and cosmetics applications
  • BioPure: advanced single-use tubing connector systems
  • Asepco: aseptic valves for the biopharmaceutical industry
  • FlowSmart: high purity sanitary gaskets, silicone transfer tubing and reinforced silicone hoses for the biopharmaceutical industry

Watson-Marlow Fluid Technology Group is an international operation based in Falmouth, Cornwall, UK. Watson-Marlow Fluid |Technology Group has offices in Argentina, Australia, Austria, Belgium, Brazil, Chile, China, Canada, Denmark, France, Germany, India, Italy, Japan, South Korea, Malaysia, Mexico, the Netherlands, New Zealand, Poland, Russia, Sharjah UAE, Singapore, South Africa, Sweden, Switzerland, Taiwan, USA and Vietnam.

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