Water & Wastewater Treatment

18 WWT PUMP AND VALVE SUPPLEMENT 2018 Product Showcase Watson-Marlow Qdos 20 The new Qdos 20 pump – an extension to the Qdos range – has been launched by Watson-Marlow Fluid Technology Group. The pump has been developed to offer highly accurate sodium hypo- chlorite metering in disinfection applica- tions with flow rates of up to 20 litres/h at a maximum pressure of 7 bar. It is especially suitable for applications at the well sites of smaller water treatment plants, where operators o‚en inject into water lines at higher pressure. Qdos 20 features the same user- friendly interface and control options, ensuring that users have continuity with any existing Qdos applications. Offering low total cost of ownership, the new model is designed as a drop-in replace- ment for diaphragm pumps. Qdos pumps also include the ReNu pumphead for single, no-tools maintenance. The new pump's intuitive interface provides simple operation via manual, 4-20mA, contact or PROFIBUS control. The brushless DC motor control maintains flow accuracy of ±1 per cent with a repeatability of ±0.5 per cent and a turndown ratio of 3,330:1. Qdos 20 is ideally suited for the tight control of residual chlorine. Successful field trials and supervisory control and data acquisition (SCADA) data indicate a considerable improvement in the variation of residual chlorine compared with even the highest-specification diaphragm metering pumps. Netzsch NEMO FSIP Netzsch has added to its line of FSIP (full service in place) NEMO progressive cavity pumps. Ideal for wear-intensive applications, the maintenance-friendly design has been re-engineered to provide full access to all of the pumps' rotating parts. NEMO FSIP pumps are now available in six sizes (NM045 to NM105) for flow rates up to 180m 3 /h. The pumps are offered with differential pressures up to 6 bar (one-stage) and up to 12 bar (two-stage), identical to the performance parameters of the standard series. Users can conveniently open the large inspection cover of the pump housing, dismantle all rotating parts, and simply install them again without having to remove the pump from the pipe assembly or disconnect wiring. The pump's rotor-stator unit can be li‚ed out a‚er opening the newly designed inspec- tion cover on the pump housing, without the need for special tools. This signifi- cantly reduces installation and mainte- nance time. NEMO progressive cavity pumps are known for their continuous, pressure- stable, gentle and low-pulsation conveyance of almost any fluid without being affected by fluctuations in pressure and viscosity. Taskmaster TM1600 Inline Grinder Taskmaster TM1600 Inline grinders from Franklin Miller feature heavy solids reduction capability and a pressure- rated pipe housing with a drop-in flange housing design for easy maintenance. These powerful twin-sha‚ grinders can plough through a large volume of rags, sludge, biosolids, solid waste, institu- tional waste, screenings and more. They are suitable for applications with heavy solids, high liquid flow rates and with flange sizes from 12-30in. This unit typically employs a 10hp (7.5kW) motor and direct drive, which provides high-torque, low-speed operation to plough through tough solids. The Taskmaster TM1600 features a liquid-tight body housing, 2.75in hardened hex sha‚ing, mechanical seals, direct inline gear drive and multitooth cam cutters. Seals and bearings are housed in a hardened stainless steel cartridge assembly for easy installation. Options include special cutter profiles, spacer cleaning combs, submersible motors and stainless steel construction. Units can also be provided for channel installation or for gravity installation with hopper and optional stand.

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