Polymer metering capabilities advanced with Qdos 60 PU pump
Fluids Handling

Polymer metering capabilities advanced with Qdos 60 PU pump

Photo of Watson Marlow Watson Marlow Send an email 03/02/2023
423 2 minutes read
Story Highlights
  • Increasing demand for advanced polymer dosing systems in sludge applications
  • Launch of specialised Qdos 60 PU polymer metering pump
  • Extends polymer dosing capabilities for higher flow applications
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With an expanding market worldwide for advanced polymer dosing systems, the introduction of the Qdos 60 PU peristaltic pump from Watson-Marlow Fluid Technology Solutions (WMFTS) is a timely addition to the company’s range. It means operators can now deploy efficient, safe, and reliable polymer metering at any water or wastewater treatment plant. 

Polymers are used mostly in coagulation and dewatering applications in the sludge treatment process. Dewatering sludge minimises sludge bulk, which can reduce the cost associated with storage and disposal by up to 75 per cent. 

There are strong regulatory drivers globally for efficient sludge dewatering therefore accurate and reliable metering of polymers in the sludge dewatering process is essential to ensure it is managed properly. 

The Qdos 60 PU offers precise and repeatable flows for many hard to handle fluids, including viscous flows and aliphatic hydrocarbons, at linear flow rates of up to 60 l/h and pressures of up to 5 bar. The pump provides excellent compatibility for complex polymers such as polyacrylamide (PAM) and other flocculants and coagulants used in wastewater treatment.  

Leveraging decades of engineering expertise and research and development experience at WMFTS, the Qdos 60 PU is optimised for low-shear, gentle pumping to protect polymer chains and maintain product integrity. As with the Qdos 20 PU, it uses an aliphatic hydrocarbon-resistant tubing material, enhancing chemical compatibility in peristaltic pumps. 

Peristaltic pumps have notable advantages over diaphragm pumps in PAM metering applications, including enhanced accuracy and reliability. There is no need for diaphragms, valves, or seals that risk clogging.  

The highly innovative design of Qdos pumps means the only part of the pump that ever requires replacing is the patented ReNu pumphead. The ReNu pumphead offers repeatable, accurate flow rates, and lasts longer for tough applications in the field. It takes less than a minute to replace the ReNu pumphead – a new pumphead is a new peristaltic pump, ready to serve again. 

Qdos 60 pu pump 1

Adeel Hassan, product manager at WMFTS said, “The new ReNu pumphead has extended the range of applications of our Qdos series. These versatile pumps can be used for accurate and safe dosing of liquids up to 120l/h and 7 bar pressure in various applications across a range of sectors. They are available in different sizes and control options depending on requirements.” 

WMFTS expects market scope to grow significantly, particularly with the pump’s integral leak detection and chemical containment capability, which reduces operators' exposure to chemicals during maintenance.  

At one wastewater treatment plant in Heide, Germany, the Qdos 60 PU metering pump is enabling the easy dosing of even hard-to-process polymers and other hydrocarbons.  

“Engineers are reporting high levels of accuracy, ease of use and manoeuvrability, coupled with maximum process security,” said Peter Dohrn, wastewater treatment manager for the plant.

“The first pumphead ran smoothly for a year before we had to replace it, purely as a preventive measure, and the second has been working without any trouble for the last six months. Replacing the pumphead only takes a few minutes.” 

Customers in the food and beverage industry can also benefit from the Qdos 60 PU pump as it is also compatible with fats, oils, and grease, and is Food and Drug Administration (FDA) and European Commission (EC) 1935/2004 certified. 

Watson Marlow
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Watson-Marlow Fluid Technology Solutions

About us

Watson-Marlow Fluid Technology Group (WMFTG) peristaltic tube and hose pumps meet requirements including: value for money; low cost of ownership; reliability and ease of maintenance to the food and beverage, chemical, pharmaceutical, mining and many other industries.

We demonstrate how pumps deliver significant process efficiencies over the lifetime of the equipment. Whether performing flavouring addition in food processing, chemical metering in water treatment or mineral recovery, we have a solution which can cut pump downtime and reduce costs through higher accuracy metering and transfer. WMFTG has dedicated application engineers available to help customers make the right pump and tubing choice from a range providing microlitres per minute to 80 cubic metres per hour flow rates.

The only part of the pump to come into contact with the product is the tube or hose. This means there are no seals or valves that can wear or fail. Replacing the tube or hose can be performed quickly and safely. Peristaltic pump benefits include:

Total fluid containment with no seals No ancillaries Handle viscous and abrasive slurries and sludge Self-priming capability Dry running without damage to the pump In addition to their range of positive displacement pumps, Watson-Marlow Fluid Technology Group has added PTFE-lined chemical and industrial hoses to their range. Aflex hoses are reinforced to withstand the most severe conditions and use.

Where we supply to

Europe, Africa, Asia, Australia, South America, North America

Industries we supply to

Automation, Chemicals, Consultants, Components Electronics, Energy and Power, Food and Beverage, Glass Ceramics Cement, Metals and Minerals, OEM, Paper and Pulp, Pharmaceutical Cosmetics Toiletries, Plastics and Rubber, Recycling, Textiles, Tobacco, Water and Wastewater

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  • Sterile ReNu SU Technology cartridge

  • Quantum and ReNu SU Technology cartridge - Make sterile connections in non-sterile environments

Photo of Watson Marlow Watson Marlow Send an email 03/02/2023
423 2 minutes read
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