Wastewater treatment plant Arnsberg-Wildshausen NEW TURBO BLOWER REDUCES COSTS AND ENERGY CONSUMPTION Besides a positive displacement blower series DELTA BLOWER, which extracts exhaust air and feeds it into the aeration basins, wastewater treatment plant Arnsberg-Wildshausen also has a new Aerzen turbo blower in the central compressed air station. Markus Droppelmann, group manager “Obere Ruhr” at “Ruhrverband” in Essen: »I saw the new turbo blowers for the first time at IFAT in Munich in 2012. All in all, selecting this as a replacement has provided considerable advantages for us.« Having exchanged a 19 year old turbo compressor for a turbo blower of the new “AT Turbo Generation 5” series, the wastewater treatment plant Arnsberg-Wildshausen is now making considerable savings, both in terms of energy and money. In Arnsberg-Wildshausen Ruhrverband (Essen) operates a biological wastewater treatment plant. It treats the sewage of 48,000 inhabitants and that of a paper factory as well. Air required in the aeration basin is generated in the central air station. Until November 2012 three approximately 19 year old adjustable turbo compressors, which had been connected in series and had been run according to the load- dependent air requirement of the three aeration basins, were in operation there. For normal requirements one unit supplied the required air volume, for higher requirements two units were in use, and during peak times all three units were running.Replacement instead of expensive maintenanceThe waste water from the paper factory has been pre-treated since 2008 and con- sequently the volume of waste water in the aeration basins has fallen, such that only two turbo blowers are required for the generation of the activation air.In 2012 one of the three old turbo units in the central station was showing significant signs of wear. Therefore, instead of an extensive and very costly refurbishment, it was decided that this old unit should be replaced with a new turbo compressor. Markus Droppelmann, group manager “Obere Ruhr” at “Ruhrverband” in Essen: »I saw the new turbo blowers for the first time at IFAT in Munich in 2012. All in all, selecting this as a replacement has provided considerable advantages for us.« By taking this step they simultaneously wanted to increase the energy efficiency and to improve supply safety in the aeration basins. As far as their performance data was concerned the new turbo blowers series “AT Turbo Generation 5” were nearly identical with the old unit to be replaced. For this replacement a detailed calculation of profitability showed a potential energy saving of between five and six per cent, so the exchange would pay for itself within five to eight years. This period shortens further when taking into account the anticipated costs for the fundamental reconstruction or procurement of spare parts for the old unit. Furthermore, with the new unit any problems inherent in the old unit’s design no longer exist. In the old units an oil supply of 19.5 litres had been used for lubrication and cooling. At full load operation and with high temperatures in summer, the considerable heating up of the oil often resulted in the unit automatically coming to a standstill, so sufficient air supply to the aeration basins was no longer guaranteed.Turbo blower as base load unitAs base load unit, the new Aerzen turbo blower supplies 80 per cent of normal requirements on its own. A second old unit is switched on as peak load unit for only five hours each day. “We have been operating the new turbo blower for more than six months, around the clock, as base unit in continuous operation. Up to now it has completely met our expectations”, says Markus Droppelmann at Ruhrverband.
Aerzen U.S.A. selected as the “Coolest Building” In March, Key Stone Edge Magazine selected the Aerzen U.S.A. building in Coatesville as one of the five “coolest” buildings in Pennsylvania.In 2009, the “green” building of our American subsidiary which they had moved into in 2008,was awarded LEED Gold (Leadership in Energy and Environmental Design) for its sustainability by the U.S. Green Building Council. Now they have received another award from a weekly online magazine in Pennsylvania. A decisive factor for the jury was the materials used in the building’s construction, i.e. straw bales and loam, which are reasonably priced but provide good insulation. Our American headquarters is the first commercial building in Pennsylvania with straw walls.
Aerzen Sales Office in Norway Since January, Aerzener Maschinenfabrik has had its own sales office in Norway. The office, headed by Ove Fauskanger, is located in Drammen, in the southwest of Oslo, and is thus close to several big chemical companies such as Ineos, Hydro and Borealis. Besides the chemical industry, the offshore industry - or more precisely “fish farming” -plays a major role in Norway. Salmon is the country’s second most exported product. Aerzen blowers are used for example in the pneumatic conveying of feed pellets.
Aerzen Turbo strengthens Customer Support Since April of this year the arrival of Steffen Helmert has strength- ened the Aerzen Turbo-Team in its Technical Support and Customer Service area. Due to his previous roles at the subsidiary RKR he has many years of professional experience and special expertise in the Turbo Blowers range.
New CNC-external Cylindrical Grinding Machine The production facility in Aerzen deployed a new CNC-external cylindrical grinding machine, made by Messrs. Danobat, at the beginning of the year. It is equipped with three CNC-main axes (X, Z, B) as well as further axes for the workpiece drive, and an “in-process measuring system” through which it is possible to grind to micrometre accuracy. The control of the machine, Siemens 840 D Solution Line, was supplemented by a special Danobat user interface. Danobat, located in the north of Spain, near Bilbao, is part of the Danobat Group, and also demonstrates its considerable skill in innovation, in other technologies.
Aerzen Canada celebrates 25 Years The Canadian Aerzen subsidiary Aerzen Canada Inc., located in Vaudreuil near Montréal, will celebrate its 25th anniversary this year. The company, which was founded in 1987, has developed over the years from a sales office with three employees to a country-wide networked sales company which also has facilities for assembly and repair.
Delta Screw G5-series expands In April, at this year’s COMVAC in Hanover and at the POWTECH in Nuremberg, Aerzener Maschinenfabrik successfully introduced the new “E-class” directly-coupled compressors series Delta Screw G5. The new, highly energy efficient concept met with a positive response from customers and potential buyers. With the new series, Aerzener Maschinenfabrik sets new benchmarks as far as reliability and energy- saving is concerned in oil-free screw compressors. From Summer 2013 the first two compressor types, VM 45 G5-E and VML 60 G5-E, can be ordered from Aerzen. By the end of this year, two more models, the VM 75 G5-E and the VML 95 G5-E, will join the new Aerzen “E-class”. A flyer which describes the innovations, including all of their technical details, can be obtained from the Marketing division.
Aerzen Representation in Nigeria Due to the increasing number of customers in West Africa, Airgas Compressors, the South African subsidiary company of Aerzener Maschinenfabrik based in Johannesburg, decided to establish a sales office in Nigeria. The location they have selected is Lagos, the country’s biggest city, which, due to its central position, offers access not only to Nigeria but also to all of West Africa, and consequently provides considerable proximity to our customers in this region.The new office will be headed by Emmanuel Dazi. After having completed a Bachelor’s Degree in Mechanical Engineering in Nigeria, and a Master’s Degree in Mechanical Engineering at the Brunel University in London, he gained a number of year’s experience in the cement industry, where he was responsible for technical support for blowers and compressors.
Nomination for Innovation Award 2013 Aerzen Delta Real Time Monitoring was nominated for this year’s Innovation Award at the PowTech fair. Ultimately we did not win the award, but just being nominated is quite an achievement in itself, particularly as: The Aerzen product finished in the top three out of 52 competitors. In addition, Delta Real Time Monitoring had been placed, for lack of a suitable alternative, in an inapplicable category, namely MSR and automation. In 2012 Aerzener Maschinenfabrik was able to win the Innovation Award with Delta Hybrid in the apparatus construction and process components category.
