WASSER BERLIN INTERNATIONAL DAILY: 30 March 2017
BLUE PLANET Berlin Water Dialogues
Wastewater management pursues many sustainability targets
”Linear thinking has nothing to do with sustainability where wastewater management is concerned.“ This was the view put forward by the Berlin Senator for Economics Christian Rickerts on opening the BLUE PLANET Berlin Water Dialogues at WASSER INTERNATIONAL. At the beginning of the Experts Forum Rickerts emphasised that due to the city’s favourable topography and its climate a sustainable economy already existed in Berlin. The local utility Berliner Wasserbetriebe was able to separate phosphor from wastewater, which could then be used in fertilizer production.
Gunther Adler, permanent secretary to the Federal Ministry of the Environment, pointed out that fulfilling wastewater sustainability targets meant that progress was also being made in other areas, for instance in resource conservation where contaminated rivers, lakes and waterways were concerned. Wastewater management offered a big opportunity to explore new ways of exploiting the value chain and to contribute to better living conditions in other countries, Adler said. Professor Stefan Uhlenbrook of UNESCO’s World Water Assessment Programme said that every dollar or euro that went into improving wastewater management produced a fivefold return, from healthcare support to fertilizer production. Incorporating wastewater management in the sustainable economy was indispensable, both for socio-ethical and economic reasons.
EU Western Balkan Cooperation Forum
Croatia on its way to modern water management
Since joining the EU Croatia has invested several billion euros of its own money as well as EU funds in modernising its water management infrastructure. This was reported by Elizabeta Kos, assistant to the minister in the Croatian Ministry of the Environment, at the EU Western Balkan Cooperation Forum at WASSER BERLIN INTERNATIONAL. She praised the joint efforts with Germany, particularly with Bavaria, in solving water management problems which went back far beyond Croatia’s EU accession in 2013. Until then, the country had practically no wastewater management, and even now around 50 per cent of the population were still not connected to modern sewage systems. One also had to factor in the higher risk of flooding due to climate change, which the EU also aimed to reduce with hundreds of millions of euros, and for which Croatia’s five-year plan had already earmarked one billion euros. According to Kos the government still had a lot of work to do.
Congress: fresh water infrastructures – preparing, not repairing
Maximum crop yields through nitrate
At the WASSER BERLIN INTERNATIONAL Congress on 29 March, day two of the fair, the focus of events was on ‘Drinking water supplies – preparing, not repairing'. In his paper, Prof. Dr. Frieder Haakh, technical managing director of Zweckverband Landeswasserversorgung, talked about nitrate levels in untreated water, pinpointed the problems and highlighted possible solutions. According to him the expertise was there, but the problem was putting it into practice. The increased use of nitrate in agriculture used to maximise crop yields was the key problem, he said. The aim was to reduce input down to 40 kilos of nitrate per hectare per year. Across Germany the volume was approximately 950,000 tonnes. Existing agricultural laws had to be consistently applied and their implementation monitored, Professor Haakh said.
DGMT Forum Membrane Technology
Risk management of contaminants in the water cycle
What technology and what processes are best suited for removing micro-contaminants, plastic microbeads and pathogenic bacteria from wastewater? These where the main questions at the Membrane Technology Forum, held by the German Society for Membrane Technology (DGMT) on Thursday (30 March) at the trade fair.
Dr. Thomas Track, Head of Water Technology, specialist area "Industrial Water Management", at DECHEMA, Society for Chemical Technology and Biotechnology, presented the practical manual on "Risk management of new contaminants and pathogens in the water cycle", known by its German acronym RiSKWa. The resulting findings provide for modern and rapid methods of verifying and quantifying anthropogenous trace substances, pathogens and resistance to antibiotics. As examples of recommended technologies for the management of emissions and immissions Dr. Track mentioned active carbon, electrodialysis, slow sand filters and new adsorbents and, along with active carbon in the wastewater sector, ozone treatment, retention ground filters, membrane bioreactors and combined processes such as active carbon-ozone.
International Ozone Symposium
Versatile applications and good treatment results
During the International Ozone Symposium on the second day of the fair (29 March) Sylvie Baig, Head of Scientific Innovation at SUEZ International, dealt with the subject of "Ozone for industrial wastewater treatment ". She pointed out that ozone can be used in many areas of water treatment, with sewage and process water as well as with surface and drinking water. Partial or extended oxidation can be used in wastewater treatment, with particular reference to the treatment of industrial wastewater and process water. In the textile industry, for example, ozone is used in particular to eliminate dyes and trace substances in particular, whereas in other branches it may be used to remove pesticides or volatile organic compounds (VOCs). One extensive field of application that is rarely considered involves the processing of cooling water in and from cooling towers, explained Sylvie Baig. In this context a great many factors have an important role to play, such as deposits and corrosion, chemical additives and the multiple recirculation of the cooling water. In experiments with ozone treatment she emphasised that good results have been achieved with regard to the disinfecting effect and the quality of the water.
German Toilet Organization e.V.
The brown soup was certainly not tasty
During the WASsERLEBEN show for the public at WASSER BERLIN INTERNATIONAL several schoolchildren sucked some five litres of brown liquid through giant drinking straws. With this symbolic sewage cocktail (in reality it consisted of drinking water coloured with coffee grounds) they were acting on behalf of the German Toilet Organization e.V. to draw attention to the fact that much of the world's population is neither "connected up" to sewage discharge systems, nor do they have hygienic access to drinking water. Meanwhile large amounts of fresh water are being consumed in other parts of the world. "This is the amount used in the production and use of a t-shirt", explained Helene, whose own t-shirt bears a sticker with the message "10,000 litres". The campaign " Brown water stinks" is part of a wider programme aimed at promoting sustainable wastewater management. This also includes a hand-washing unit consisting of a pipe which, by lightly pressing one's finger, releases enough clean water for hand washing. "This alone is enough to reduce the incidence of diarrhoea", said Arne Panesar from the German Agency for International Cooperation, "and installations of this kind in schools are one possibility for discussing the subject of dealing with faecal matter in societies where such topics are highly taboo."
Federal Office for Civil Protection and Disaster Assistance
In emergencies, water pumped by hand
The Federal Office for Civil Protection and Disaster Assistance (BBK) has over 5,200 emergency wells available for use in major emergencies. All the equipment for such a well is being displayed by the BBK at WASSER BERLIN INTERNATIONAL. The concept is being explained, using Cologne as an example, to show how the well operates even if there is a power failure, and visitors to the fair can have a go at pumping water by hand. The authority is also presenting a risk analysis method aimed at assisting municipal waterworks to assess their own vulnerability when unexpected threats occur. Visitors will be shown how emergency concepts are worked out to cope with long term loss of power. The Federal Agency for Technical Relief (THW) is providing details about the possibilities for supplying drinking water, and is exhibiting the main elements of a modern mobile drinking water treatment plant. The BBK helps members of the public to identify and avoid structural risks that could result in serious harm in the event of sudden flooding. At the same time the agency is also providing a series of 12 video clips with information about ways of protecting against such dangers and risks in and around buildings.
A system providing early warnings about the quality of lake water
Using a multi-parameter probe the ecoTech Profiler can determine the quality of the water in lakes or reservoirs. Such waters are at particular risk because any nutrient inflow is not carried away and diluted as it would be in moving water, but is instead deposited in the lake due to lack of movement. As a result oxygen levels can fall rapidly, or toxins can build up. The ecoTech Profiler, which is being displayed at WASSER BERLIN INTERNATIONAL, can register the water quality at up to 100 points, and at depths of up to 100 metres. Parameters such as oxygen, chlorophyll, temperature, conductivity, pH values and turbidity are measured by a multi-parameter probe. The Profiler brings it to the required depth profile point, and it can be positioned on platforms, buoys or at a fixed location on a sampling tower. It operates independently of a mains power supply, either with batteries or solar power, and this means that it can be used in inaccessible places, relaying its data worldwide and wirelessly.
Hall 3.2, Stand 123, press contact: Caro Mayr, tel.: + 49 228 850447700,
Franz EISELE & Söhne GmbH & Co. KG
Storage, transport and homogenisation of sludge
Franz EISELE & Söhne is a family-run business that offers a wide and varied range of products for the agricultural, biogas and municipal sectors, and is regarded as a specialist in the storage, transport and homogenisation of sludge. The company's submersible agitators, for example, range in output from 2.2 to 22 kilowatts. Units with a rating of 7.5, 11, 15, 18.5 and 22 kilowatts can be used in biogas installations, while the 5.5, 7.5-, 11 and 15 kilowatt explosion-proof versions are available with ATEX certification. EISELE manufacturers its own motors. This exhibitor's vertical, submersible and rotary pumps are suitable for many uses and guarantee the problem-free mixing and pumping of sludge. They are available in a range from 7.5 to 22 kilowatts or with a power take-off drive unit (with the exception of the submersible pump motors).
Hall 4.2, Stand 213, press contact: Rainer Eisler, tel.: +49 7571 1090,
email: firstname.lastname@example.org, Internet: www.eisele.de/en/
TRACTO-TECHNIK GmbH & Co. KG
Sustainable renewal of water and sewage pipes
Water loss and/or inadequate pipe capacity are typical problems encountered in older municipal supply networks and sewers. In such situations pipe bursting with Grundoburst is an economic method of renewing pipelines with typical damage such as cracks, incrustation, root penetration, pipe displacement, positioning irregularities, cracked sleeves, sewer blockages and mechanical wear in existing pipes, without disturbing the surface. The costs of renovation work as a result of subsidence, the influence on ground water or damage to roads are negligible. The work can be adapted to match the capacity of the pipe network, because new pipes with a smaller identical or larger diameter (one to two nominal widths) can be drawn through. With five different GRUNDOBURST models applications are possible from pit and/or shaft to pit and/or shaft.
Hall 1.2, Stand 213, press contact: Anne Knour, tel.: +49 2723 808177,