⎪ Water, wastewater and pumping solutions ⎪
ability and reduces running costs significantly.” “We call these ‘PURE’ pumps because the wet-end is manufactured from pure materials chosen for their temperature, abrasion or corro- sion resistance: pure polypropylene or PTFE, for example. The pure materials are also very easy to clean as they tend not to get impregnated with slurry media,” he says. On the new Verder e-PURE pump, the ball check non-return valve typically used on dia- phragm pumps has been replaced with a flap - per valve, which is better for pumping slurries or media containing solids. The biggest pump in this range can handle 100 ℓ /min (6.0 m 3 /h) and there are material options for a number of exotic liquids. Citing an early success, MacDougall says four of these pumps have been sold to a copper processor in the Congo to pump sulphuric acid wash-down waste from a sump. “In this ap- plication acid spillage from delivery vehicles is washed down into a sump. Our e-PURE pumps are being used to transfer this toxic slurry into waste collection vehicles. The highly corrosive acid can get extremely hot due to the exother- mic reaction with the washdown water, and it also picks up grit, which makes our new e-PURE solution with its flapper valve and PTFE contact material an ideal pump for the task,” he tells MechChem Africa. JABSCO rotary lobe pumps In addition, MacDougall points out that Verder recently acquired the JABSCO rotary lobe pump business. “This gives us a stronger offering for the local food, beverage and pharmaceutical markets, where clean-in-place/sterilise-in- place routines are essential for hygiene and food safety. “Rotary lobe pumps are ideal for transferring viscous substances such as peanut butter, yeast and mayonnaise. They are manufactured to hygienic standards using polished 316 stainless steel and we can offer various combinations of mechanical seals to cater for a wide range of media types,” he notes. Looking at future growth potential, MacDougall points out that the water and wastewater industry could benefit signifi - cantly from Verder’s dosing experience in the mining and minerals processing industries. “To add reagents to thickeners and clarifiers,
the water and wastewater industries have, for many years, relied on progressive cavity pumps. We have had experiences
where 15% of the flocculant being used at a plant was being lost in the progressive cavity pump being used. “By using a small cost-
effective peristaltic hose pump, which will prevent flocculant shear just as well as a progressive cavity pump, the cost of main- tenance will reduce significantly, dosing accuracy will improve and the amount of wasted flocculant will decrease dramatically,” he suggests. “Using our pumps, we can far more effi - ciently manage dosing applications at wastewater plants, just as we do on the Copper mines in DRC where we have racks of Dura 25s being used to dose reagents at massive flotation plants. We have the modern solutions that wastewater treatment
The new Verderair e-PURE electrically driven double diaphragm pump has also just been released. plants need, and it is a business area we are very interested in growing,” MacDougall concludes. www.verder.co.za
On the copper mines in DRC, racks of Dura 25 hose pumps are being used to dose reagents at massive flotation plants. These pumps can also far more efficiently manage dosing applications at wastewater treatment plants.
May-June 2022 • MechChem Africa ¦ 13
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