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Conservation of resources through efficient solutions from AERZEN

21/04/2020

According to the Federal Environment Agency, all sewage treatment plants in Germany have a combined annual electricity requirement of around 4,400 gigawatt hours This corresponds to the annual output of a modern coal-fired power plant. The ventilation of the aeration tank is a particular focus, which alone is responsible for about 60 to 80 percent of the energy demand of the sewage treatment plant and offers a considerable potential for resource conservation. The technology pioneer AERZEN has recognised this potential early and offers innovative solutions for the demand-oriented, efficient ventilation of the aeration tank.

The approach of AERZEN goes far beyond the mere provision of efficient blower and compressor technology. Thus the technological pioneer from Aerzen always has a holistic view of the possibilities for saving resources with his solutions for sewage plants. In concrete terms this means: AERZEN accompanies planners and operators on the waste water market along the entire value-added chain and takes over all necessary components on the way to "Water 4.0", from the measurement and recording of demand to the technology design and realisation and finally to the service.

Resource-efficient ventilation concepts pay off for the customer in three ways. From an economic perspective, owners and operators of wastewater treatment plants benefit from a significant reduction in operating costs by an average of approx. 30% by investing in efficient aeration technology. Due to constantly rising electricity costs, the modernisation measure today usually pays for itself within two years. Against the background of the ongoing climate debate, sewage plant operators are making an active contribution to greater environmental protection and a significant reduction in CO2 emissions by investing in resource-saving technology. 

The third major advantage of resource-efficient aeration concepts is the increasing transparency along the wastewater treatment processes. By recording all relevant process parameters, it is possible to evaluate efficiency transparently and sustainably using key figures and to continuously optimise processes on a sound basis. The first step on the way to "Water 4.0" at AERZEN is always the detailed recording, analysis and documentation of the actual load profiles. The AERaudit service includes the temporary measurement of volume flow, system pressure, temperature and power in the blower station. The recorded data is carefully evaluated and transferred into tailor-made concepts for increasing efficiency. Based on this analysis AERZEN then makes a tailor-made machine and technology selection consisting of Roots blower, rotary lobe compressor and/or turbo blower as well as an individual ROI calculation of the measure. In addition, AERZEN also offers support in room ventilation and sound concepts as well as heat recovery within the scope of the holistic approach.

If the technical details for the modernisation of the sewage treatment plant are available, AERZEN offers support in financing the measure in cooperation with external partners. This makes it possible to noticeably improve the business case through state subsidies. Subsequently, AERZEN supports the implementation and enables with its master machine control AERsmart the continuous optimisation of the energy balance as well as the networking and data analysis. During the operating phase, the ventilation specialist also ensures maximum security against costly process interruptions with a tailor-made spare parts and service management system.

Data-based services offer a further potential for optimising efficiency in compressor operation. With the new digital service AERprogress from AERZEN the operating data of the blower and compressor technology are automatically recorded, evaluated and analysed. Operators are provided with tailored information, reports and recommendations for action in order to identify potential for improvement and to optimise the operation of the compressors in the long term.


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