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Hamburg, Germany

Nickel D.,Ecologic Institute | Schoenfelder W.,HAMBURG WASSER | Medearis D.,Northern Virginia Regional Commission | Dolowitz D.P.,University of Liverpool | And 2 more authors.
Journal of Environmental Planning and Management | Year: 2014

This paper identifies and describes experience with 'green' stormwater management practices in Germany. It provides the context in which developments took place and extracts lessons learned to inform efforts of other countries in confronting urban stormwater challenges. Our findings show that an integrated environmental planning approach helps to balance environmental and urban development. Further, the transformation to a mixed grey and green infrastructure necessitates both a quantifiable long-term goal and a suite of policies to incentivise green infrastructure and support implementation. Finally, public authorities must assume leadership while enabling the participation of stakeholder groups in the transformation process. © 2014 Copyright Taylor and Francis Group, LLC. Source

The development of future water demand is essential for a water utility such as HAMBURG WASSER with respect to water resources as well as technical and financial management. At present, yearly water demand is relatively constant after three decades of significant decrease. Specific water demand in households is expected to go down at a slower rate. Decreasing specific household demand will be compensated by a slightly increasing number of inhabitants, increasing industrial and commercial demand as well as an increased supply to neighboring utilities. The water demand study presented in this article details valuable insights into the sectoral as well as spatial development of water demand. Source

Schramm E.,Isoe Institute For Sozialokologische | Giese T.,Isoe Institute For Sozialokologische | Kluge T.,Isoe Institute For Sozialokologische | Kuck W.,HAMBURG WASSER | Volker C.,HAMBURG WASSER
GWF, Wasser - Abwasser | Year: 2016

New technologies lead to a change of the motivations and functions of different actors as well as their constellations. A cooperation management allows to shape them. For the example of the HAMBURG WATER Cycle (HWC) and its first implementation it was investigated how the acting of the involved actors might be coordinated in such a way, that the optimal operation of the HWC results. Differentiated for the implementation phase and the operation phase possible relations between central actors have been identified regarding functions and cooperation. Ideal cooperation models have been developed for the Jenfelder Au site as well as for further applications of the HWC, domestic as well as abroad. The results are also of interests for other Novel Sanitary Systems; first generalizing hints for its use are given. Source

Krieger K.,HAMBURG WASSER | Kuchenbecker A.,HAMBURG WASSER | Huffmeyer N.,HAMBURG WASSER | Verworn H.-R.,Leibniz University of Hanover
Water Science and Technology | Year: 2013

The Hamburg Water Group owns and operates a sewer network with a total length of more than 5,700 km. There has been increasing attention paid to the possible impacts of predicted changes in precipitation patterns on the sewer network infrastructure. The primary objective of the work presented in this paper is an estimation of the hydraulic impacts of climate change on the Hamburg drainage system. As a first step, simulated rainfalls based on the regional climate model REMO were compared and validated with long-term precipitation measurements. In the second step, the hydraulic effects on the sewer network of Hamburg have been analyzed based on simulated long-term rainfall series for the period of 2000-2100. Simulation results show a significant increase in combined sewer overflows by 50% as well as an increase in surcharges of storm sewer manholes. However, there is still a substantial amount of uncertainty resulting from model uncertainty and unknown development of future greenhouse gas emissions. So far, there seems to be no sound basis for the implementation of an overall climate factor for sewer dimensioning for the Hamburg region. Nevertheless, possible effects of climate change should be taken into account within the planning process for major sewer extensions or modifications. © 2013 IWA Publishing. Source

Augustin K.,HAMBURG WASSER | Skambraks A.-K.,HAMBURG WASSER | Li Z.,HAMBURG WASSER | Giese T.,HAMBURG WASSER | And 4 more authors.
Water Science and Technology: Water Supply | Year: 2014

One of the largest urban development projects at present in Hamburg is the conversion of former military barracks into a new residential area for about 630 households, called Jenfelder Au. The urban design concept for this 35 ha area follows a high quality approach to develop a carbon-neutral, attractive neighbourhood for approx. 2,000 inhabitants abundant with green space and urban water. HAMBURG WASSER, Hamburg's water supply and wastewater utility, is rethinking the way of wastewater management by implementing an integrated concept for decentralised wastewater treatment and energy production - the so-called HAMBURG WATER Cycle® (HWC) - in this new residential area, based on source control of wastewater. Stormwater, greywater and blackwater are collected separately and then treated separately on site in Jenfelder Au. The realisation of the HWC will be the hitherto largest demonstration of a resource oriented sanitation concept working with vacuum technology for the collection of concentrated blackwater. This concept intends to establish synergy between wastewater management, waste management and energy production, and contributes to an improved local natural water cycle.© IWA Publishing 2014. Source

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