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Bad Essen, Germany

Saenz J.,Fraunhofer Institute for Factory Operation and Automation | Elkmann N.,Fraunhofer Institute for Factory Operation and Automation | Stuerze T.,Fraunhofer Institute for Factory Operation and Automation | Kutzner S.,Fraunhofer Institute for Factory Operation and Automation | Althoff H.,Emschergenossenschaft
2010 1st International Conference on Applied Robotics for the Power Industry, CARPI 2010 | Year: 2010

Concrete pipes are used in a variety of areas for conducting media underground (e.g. wastewater, cooling water, etc.) or for transportation purposes. Regular cleaning and inspection is required to ensure the static integrity of the pipe and to insure against the problems associated with failure of the pipe. In this paper, the SVM-RS system for cleaning and inspecting large concrete pipes will be presented. Various aspects of the robot including its kinematics, the cleaning system, the sensor system, the media supply, communications, as well as the control system and operator interface will be discussed in detail. The use of robust robotics for accurate positioning of high-pressure water nozzles in combination with non-destructive sensing techniques for navigation and inspection during normal pipe operation allows for a new standard in high-quality pipe cleaning and inspection. The latest cleaning and inspection results from tests in real sewers will be presented. ©2010 IEEE.

Jekel M.,TU Berlin | Dott W.,RWTH Aachen | Bergmann A.,Water Center | Dunnbier U.,Berliner Wasserbetriebe | And 11 more authors.
Chemosphere | Year: 2015

An increasing number of organic micropollutants (OMP) is detected in anthropogenically influenced water cycles. Source control and effective natural and technical barriers are essential to maintain a high quality of drinking water resources under these circumstances. Based on the literature and our own research this study proposes a limited number of OMP that can serve as indicator substances for the major sources of OMP, such as wastewater treatment plants, agriculture and surface runoff. Furthermore functional indicators are proposed that allow assessment of the proper function of natural and technical barriers in the aquatic environment, namely conventional municipal wastewater treatment, advanced treatment (ozonation, activated carbon), bank filtration and soil aquifer treatment as well as self-purification in surface water. These indicator substances include the artificial sweetener acesulfame, the anti-inflammatory drug ibuprofen, the anticonvulsant carbamazepine, the corrosion inhibitor benzotriazole and the herbicide mecoprop among others. The chemical indicator substances are intended to support comparisons between watersheds and technical and natural processes independent of specific water cycles and to reduce efforts and costs of chemical analyses without losing essential information. © 2014 Elsevier Ltd.

Trautmann N.,Leibniz University of Hanover | Beier M.,Leibniz University of Hanover | Phan L.-C.,Emschergenossenschaft | Rosenwinkel K.-H.,Leibniz University of Hanover
Water Science and Technology | Year: 2011

Economic growth in Vietnam in the last few years has brought about an increasing demand for energy and has had a severe environmental impact. Fish processing is one of the fastest-growing industries that discharge organically-polluted wastewater. To counter these environmental problems, new technologies for energy-efficient treatment are needed. By coupling innovative nitrogen removal systems with anaerobic treatment processes, it is possible to realise such technologies. In the present project, a combined deammonification and anaerobic carbon removal system is presented. Special requirements to enable reliable treatment are discussed, taking industrial wastewater characteristics into consideration. To evaluate energetic efficiency, energy balance calculations based on data from a fish-processing factory are made. The determined specific energy consumption and production rates show that energy recovery is possible, even when COD and nitrogen removal efficiencies of over 90% are achieved. Depending on the pre-treatment employed, energy recovery rates ranging from 0.6 to 2.5 kWh/mt raw fish can be reached. © IWA Publishing 2011.

Walter C.,Fraunhofer Institute for Factory Operation and Automation | Saenz J.,Fraunhofer Institute for Factory Operation and Automation | Elkmann N.,Fraunhofer Institute for Factory Operation and Automation | Althoff H.,Emschergenossenschaft | And 2 more authors.
Journal of Field Robotics | Year: 2012

On behalf of the Emschergenossenschaft, a public wastewater utility based in Essen, Germany, the Fraunhofer Institute for Factory Operation and Automation (IFF) in Magdeburg has developed a novel robotic system, the damage measuring and cleaning system (SVM-RS), for cleaning and inspecting large-diameter sewers that are partially filled and in normal operation. The SVM-RS was specifically designed and built for use in the Emscher sewer system and employs a multisensor approach for a high-resolution inspection of the pipe, both above and below the water. Furthermore, robotics technologies are used in combination with traditional high-pressure cleaning techniques to achieve high-quality cleaning results. In addition to the hardware design, a number of software developments in the areas of software architecture, image processing, and data fusion for understanding and presenting the data, as well as teleoperation techniques, have been carried out in the course of the project. Here automatic detection of damage as well as other features present in the environment has proven to be of importance. Design considerations and solutions for individual components of the cleaning and inspection are described within the context of the whole system, and the results of specific tests and experiments are presented. © 2011 Wiley Periodicals, Inc.

Reinders M.,Research Institute for Water and Waste Management FiW | Beckhaus P.,Zentrum fur BrennstoffzellenTechnik ZBT GmbH | Illing F.,IBR Ingenieurburo Redlich und Partner GmbH | Misz U.,Zentrum fur BrennstoffzellenTechnik ZBT GmbH | And 4 more authors.
International Journal of Hydrogen Energy | Year: 2015

Hydrogen can play an important role in a future renewable energy economy. One promising method for hydrogen production with the potential for integration into a local supply chain in the vicinity of wastewater treatment plants was investigated during the EuWaK project at Emschergenossenschaft's Bottrop wastewater treatment plant (WWTP). The raw material for hydrogen production is digester gas, a renewable energy source. The digester gas is processed into bio natural gas and hydrogen. The hydrogen is used in a combined heat and power plant with a hydrogen engine to produce electricity and heat to supply a nearby school. An attractive alternative to a hydrogen engine is a fuel cell. Fuel cells require hydrogen conforming to stricter quality standards than H2 engines; therefore trialling quality management methods with a model fuel cell is an important safeguard in order to protect downstream fuel cells if digester gas derived hydrogen is to be used. Copyright © 2015 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

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