Water supply for the city of the future A research project with AERZEN participation had been given an award The German-Chinese research project SEMIZENTRAL pursues the goal of improving the quality of life in megacities of the future. The project has received one of the 2015 GreenTec Awards. In the fields of water supply and water disposal, AERZEN blower technology plays a key role. Thanks to blower technology made by AERZEN, the water supply and water disposal in megacities of the future is particularly resource-conserving and energy efficient. In wastewater treatment, the AERZEN series Delta Blower and Delta Hybrid are used. Instead of a central sewage plant, the concept involves smaller plants which are tailored to the development of new residential areas.The project SEMIZENTRAL, of the Technical University Darmstadt in the Chinese coastal metropolis of Qingdao, has been given a GreenTec Award. This project shows how to plan infrastructure as needed, and how to put these infrastructure plans into practice. Instead of building one central sewage plant for the entire city, the scientists have pursued a semi-centralised approach with a number of smaller plants. This enables cities to grow in sections and consequently, the water supply and water disposal infrastructure can do likewise. Within this scope of application, AERZEN blower technology has been among the established equipment used worldwide for more than 150 years. Efficient engineering made by AERZEN For optimal water treatment, the Technical University Darmstadt and its cooperacooperation partners, Tongji University Shanghai and Qingdao Technological University, applied an especially energy-efficient technology. With regard to sewage water cleaning, basin aeration uses the highest amount of energy, so the application of energy-saving solutions is well worth the effort. For this reason, the decision was made in favour of the AERZEN series Delta Blower and Delta Hybrid. “We were looking for economical blower packages which transport air by means of high volume flows”, recalls Dr. Susanne Bieker, Research Project Manager. Air quantities to be controlled as required In the aeration basins, two Delta Blower packaged units ensure that in grey water treatment systems, the microorganisms do not run out of air. The blower GM3S supplies a volume flow of up to 210 m³/h. To ensure that the semi-centralised plant, which was taken into operation in 2014, is always working within an optimal range, both functionally and in terms of energy use, components are required which also work with high efficiency in partial-load operation. The adjustment of motor speed and flow capacity to suit daily demand is done by frequency converters. Under similar conditions,AERZEN Delta Blowers can be applied in membrane filtration basins as well. The generated air flow works as an air blade which removes the biofilm from the diaphragm and prevents the fine pores from clogging. For this, both air quantity and pressure are the decisive factors, and are reason enough to use, in this case, the efficient positive displacement blower GM 10 S made by AERZEN, which delivers a volume of up to 542 m³/h at a differential pressure of up to 1 bar. The best of both worlds For the treatment of black water, three Delta Hybrid packaged units are in operation, with a capacity of 690 m³/h. With this series, AERZEN has succeeded in combining the operating principles of the positive displacement blower and the screw compressor in such a way that they are comparable with standard compressors, but these units require 15% less current. These world first rotary lobe compressors offer completely new possibilities for the generation of negative pressure and overpressure by ingeniously combining the technical advantages of both concepts. For the Technical University Darmstadt these aspects influence the selection of suppliers as Dr. Bieker explains: “We use technology which is highly efficient in terms of energy use and reliable over long periods of time. Everything needs to be coordinated properly.” Worldwide service and a quick supply of spare parts are mandatory as well. Further optimisations for the future Productivity, reliability and energy efficiency are becoming ever more important considerations in European mechanical engineering in the assessment of process technology. Dr. Bieker reports that the total cost of ownership (TCO) hardly plays a role in China anymore. In view of increasing urbanisation, the efficient use of water is becoming more and more important. Saving is well worthwhile! Therefore, AERZEN steadily continues its research in terms of maximum energy efficiency and economy for blower technology.
New manager Process Gas Division (PGD) After nearly 30 years of successful work as Managing Director for Aerzen U.S.A., Pierre Noack is coming back to Germany. From 1st October 2015, he will take over the management of the Process Gas Division of AERZEN, and will be responsible for all process gas activities within Germany and world-wide AERZEN competence centres.
60th anniversary of Aerzen Belgium On the occasion of the company’s 60th anniversary, Aerzen Belgium had invited customers, suppliers, employees and their families to a party. With its theme “The Future is Now”, guests at the party had an opportunity to experience time travel. Passing machines from different decades, the path led right up to the present day, when AERZEN has been able to achieve what, until recently, was still a vision of the future. Since its beginnings back in 1955, Aerzen Belgium has expanded several times in respect of office space as well as personnel. Today, the warehouse and workshop extend to 2,000 square metres, and the team consists of 27 employees who provide an extensive range of after-sales services.
Two re-certifications for AERZEN Hungary AERZEN HUNGÁRIA KFT. has had success on two occasions with re-certifications this year. On 18th March 2015, TÜV Rheinland carried out a re-certification audit concerning ISO 9001:2008. With the complete inspection of the company taking place every three years, the auditors inspected the main areas of sales, production, planning and after sales service. Quality management was also checked and received high praise. The renewal of the welding certificates then followed on 14th May 2015. After these two successes, AERZEN Hungary now aims to achieve the ASME-certification in order to meet American requirements as well.
Powerful Trio for Japan! Aerzener Maschinenfabrik GmbH, and its subsidiary Aerzen Turbo, concluded a distributor agreement with the well-known company Ebara Jitsugyofor the Japanese market in March of this year. The co-operation primarily covers the Japanese wastewater market, as well as sales and service of AERZEN turbo blowers. For further information, please visit: www.ejk.co.jp
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More service for South Africa AERZEN has taken over the management of Airgas Compressors in Johannesburg, South Africa and established a new service subsidiary in Durban on 1st June 2015. As a result of this local support, customers in the South African province of KwaZulu-Natal, as well as those in Mozambique and Mauritius, save on transport costs, because repairs and servicing of blowers and compressors are now effected at site. The new entity is led by Earl Houson and Patrick Clothier. “Thanks to Airgas Compressors’ work, AERZEN already has an excellent reputation in Sub-Saharan Africa. By expanding our local portfolio and service, we will continue to grow“, according to manager Klaus-Hasso Heller.
