Water & Wastewater Treatment

The PumPing STaTion - PumP and ValVe SuPPlemenT 2017 13 13 the liquid. Additional costs may arise if pulsation dampeners are required to accommodate vibrations and surges in the piping systems. AODD pumps are very reliable since they have very few moving parts and components that can wear. They are easily dismantled for maintenance or diaphragm replacement. The main working parts are the valves, valve seats and diaphragms. Spares are generally fairly low cost, but it is vital to select the correct corresponding parts. For example, Neoprene is outstanding for general purpose as a low cost diaphragm that delivers the highest flex life. Teflon-based diaphragms are generally the most expensive, with other materials lying in between, so while the diaphragm used must be compatible with the fluid to be pumped, care should be taken to make sure that it is not over-specified, leading to unnecessary costs. Energy cost for the pump comes from the consumption of the compressed air required to power the pump. Since compressed air is a relatively costly utility in many plants, rates. Single piece diaphragms where the PTFE diaphragm is bonded directly to a rubber diaphragm are also available to combine the chemical resistance of PTFE with the flex characteristics of an elastomer. Cost of ownership If a plant isn't suitably designed for the application of an AODD pump, the pump could end up costing more to run than it should. Having said that, the cost of ownership of the pump itself can be broken down into investment and installation costs, maintenance and upkeep costs including labour and spares, energy costs as well as waste removal and disposal costs. Purchase costs will naturally depend on the size of the pump and the materials of manufacture, but with many manufacturers to choose from, the prices tend to be competitive. However, installation costs are minimal since pumps can be positioned wherever there is adequate space for them, even submerged if the liquid is compatible with the material of the pump and the exhaust is ported out of requiring compressors and air distribution systems, this represents the main running cost for an AODD pump. However, AODD pumps can be used in locations where either electricity simply isn't available or in hazardous areas where electrical supplies are restricted. This enables AODD pumps greater flexibility over centrifugal and positive displacement pumps. AODD pumps are generally environmentally friendly as most of them use oil-free compressed air for pollution- free operation. No oil mist is vented into the atmosphere and also there can be no oil contamination of the pumped fluid. Since there are few components that require maintenance, it is relatively straightforward to refurbish AODD pumps, increasing their lifetime and further decreasing cost of ownership. There is a huge choice of AODD pumps from a large number of manufacturers, so it can be useful to consult with independent pump suppliers, who are not tied to a particular manufacturer, for advice on the most suitable pump for a given application within the allocated budget. The PumPing STaTion - PumP and ValVe SuPPlemenT 2017 00 Saniflo introduces ra of new products this Spring Saniflo – inventor of the macerator with more than 50 years' experience and the number one in the UK macerator market – kicks off the spring season with a ra of new products featuring new technological advancements for the commercial sector. The hassle-free, plug and play range is designed to be the best on the market featuring ease of installation and maintenance with new and improved noise and vibration reduction. For the commercial sector, upgraded versions of the popular Sanicubic and Sanispeed ranges have been introduced, including a three- phase version of the popular Sanicubic XL, which is one of Saniflo's largest liing stations for commercial use handling up to 55m3/hour of black water via two 3200W pumps. All units are quieter than before and can be easily serviced and maintained thanks to the removable motors. A new 2017 product catalogue features more information on the whole range of commercial products in an easy to navigate format, giving industry professionals all they need to specify the right product for each project, no matter how small and simple or large and complex a project may be. To order your copy of the new Saniflo domestic and commercial product catalogue visit www.saniflo.co.uk Advertisement feature

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