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IWA Water Reuse 2019 in Berlin visits Hobrechtsfelde

13.09.2019

AKUT supports climate strike on 20 September

Far more than 2,000 business enterprises are now demanding an ambitious climate protection law – “with full conviction”. This is emphasised by the statement of Entrepreneurs For Future, which AKUT Partnership has now signed up to.

On 20 September, the #FridaysForFuture initiative called for a global climate strike. The success of this initiative will determine whether sufficient pressure can be put on the government to act immediately and consistently. This commitment must no longer be left to young people alone.

We too feel compelled to demand effective political decisions from the government. For more than 30 years AKUT has mainly been working on technical solutions for environmental protection. Now that the jungle is burning and Germany is affected by extreme weather conditions, the urgency of a targeted climate policy must have become clear.

Citizens and companies must not tolerate that the minimum requirements for limiting global warming already negotiated internationally in the Paris Treaty continue to be disregarded by its Government.

Never before have such drastic measures been necessary to protect our environment worldwide. That is why we also support the call for a climate strike on 20 September. At this global #FridayForFuture our office will remain closed. Join us on the company outing to the Chancellery in Berlin or wherever you are in this world – on our singular globe .

More information for companies and to sign the appeal you can find here: www.entrepreneurs4future.de

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BLUE PLANET Berlin Water Dialogues meets AquaNES

09.07.2019

IWA Water Reuse 2019 in Berlin visits Hobrechtsfelde

From 16 to 20 June 2019, the International Water Association IWA hosted its “12th International Conference on Water Reclamation and Reuse” in Berlin: over 400 experts from more than 40 countries, more than 200 lectures, more than 120 posters, exhibitions, workshops and technical tours on the complex of “Overcoming Water Stress through Water Collection and Reuse”. In times of advancing climate change, water management is becoming increasingly important, as we experience in our daily work.
Part of the program was a tour of the former sewage farms in Berlin Hobrechtsfelde called “Hobrechtsfelder Rieselfelder”. AKUT has organized that tour.
In the information centre “Gut Hobrechtsfelde”, the former warehouse, there is a beautifully prepared exhibition on the history of Berlin’s wastewater treatment, in particular the sewage farms. The model of the agricultural use of the sewage farms around 1920 shown there is designed precisely. The Hobrechtsfelder Rieselfelder were taken out of operation after the commissioning of the sewage treatment plant north (today: WWTP Schönerlinde) in 1985. Both the drainage pipes, which continued to drain the area, and the heavy metals and phosphates, which had accumulated in the soil over the decades, remained in the soil. The reirrigation of the sewage farms was planned and implemented in 2004 by the AKUT / P2M / Spiekermann GmbH working group. A part of the existing drainage ditches including the drainage pipes were sealed, whereby a long retention time was aimed at. Re-irrigation of areas that had fallen dry became possible. This is done with already purified wastewater from WWTP Schönerlinde, which is further purified and hygienised at the request of the Lower Water Authority within the Hobrechtsfelder Rieselfelder. The treatment is carried out without electrical energy demand and with the lowest operating costs, as no operating resources are used. A system consisting of different zones, such as deep water zone, shallow water zone, overgrown zones and ground passages, has been created for the more extensive near-natural wastewater treatment within this so-called cleaning biotope. Since only limited data were available for the effect of the individual components, AKUT had planned pilot filtration plants / test basins for practical evaluation of the possible variants. Within the framework of a research project, not only nutrient degradation rates and hygienization were investigated, but also the removal of pharmaceutical residues and of other micropollutants. After completion of the test operation, the pilot plant has been adjusted for continuous operation. A good ten years after the re-irrigation had started, not only a large number of birds but also beavers have settled in the area. As planned, the sewage farms and the surrounding biotope are used as a silvopasture system where livestock and horses are moving independently with the side effect of low cost landscape conservation.
The conference participants from all over the world were impressed by the near-natural technology of the 19th century with sewage farms for the treatment and agricultural use of wastewater and nutrients. But even in the 21st century, when regional water scarcity is expected, there is great interest in near-natural solutions to strengthen the water balance through water recycling. At the same time, carbon sequestration in wetlands around the world represents an important contribution to climate protection.

We would like to take this opportunity to thank

  • DECHEMA and Berliner Wasserbetriebe BWB for support in the organisational handling of the tour;
  • the Pankow forestry office and
  • the horse farm “Pferdekultur Gut Hobrechtsfelde” for opening the exhibition and the guided tour.
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Successful workshop on solar irrigation in Bolivia

01.03.2019

BLUE PLANET Berlin Water Dialogues meets AquaNES

The conference “BLUE PLANET Berlin Water Dialogues meets AquaNES” will take place in Berlin on 09 April 2019 from 9 am to 5 pm. The conference meets every year to promote cooperation and knowledge exchange across industries. This spring, the research work and innovations of the Horizon 2020 project AquaNES will be specifically presented and debated through lectures, panel discussions and World Cafés.
AquaNES is a research network that investigates and promotes wastewater and drinking water treatment through a combination of near-natural and technical systems through 13 different demonstration projects in Europe, India and Israel. A wide range of climatic and hydrogeological factors will be covered and processes such as bank filtration, Managed Aquifer Recharge, Constructed Wetlands and technical pre- and post-treatment options will be tested and improved.
AKUT has been involved in the research project AquaNES since June 2016. Together with partner companies such as Berliner Wasserbetriebe (BWB), Kompetenzzentrum Wasser Berlin (KWB) and Erftverband, AKUT will present the results and hurdles of the combination of near-natural and technical systems for wastewater treatment and water treatment.
In cooperation with the BWB and the KWB, AKUT has developed a pilot plant at the Schönerlinde site to remove trace substances and pathogens from the effluent of the wastewater treatment plant. For this purpose, two different planted soil filters with upstream ozonation were built and their effect on improving water quality was investigated. Regina Gnirss (BWB) will present the results of the two-year pilot in her lecture “Ozonation combined with natural filtration processes – water quality gains”. In addition, Andrea Brunsch (Erftverband) will present the results of the pilot plant at the Rheinbach site in her lecture “Flexible use of modified retention soil filters to treat wastewater treatment plant effluent and combined sewer overflow”, in which a retention soil filter is used flexibly for the treatment of wastewater from wastewater treatment plants and mixed water overflows.
After the presentations AKUT and AUTARCON will lead the discussion group “Solutions for rural communities, remote locations and emerging countries” and will be available for questions and discussions on the topic.
The exact programme and further information on “BLUE PLANET Berlin Water Dialogues meets AquaNES” can be found at http://blueplanetberlin.de/next-event/ .

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