  when it will have a total length  the wastewater treatment plant in Deusen, a district in Dortmund, to the confluence of the Emscher and the Rhine at Dinslaken. Total investments amount to     been built up to now,” said the water management association Emschergenossenschaft. Further impressive figures in connection with the Emscher     pipes are made of reinforced concrete. The gradient at these  metres per kilometre, with a  km/h.


The aim of this large-  wastewater to its treatment plants via underground pipes.  on the surface can be free from wastewater and can be redesigned in a way that is close to nature,” says the water management association.


 treatment plants


 wastewater without including the entire wastewater system, and indeed not merely the wastewater pipes, but also the pipes within a sewage plant. Raw sludge, for instance, is pumped into a digestor which is several metres high. The digestion tower has a screening drum – a large pipe with numerous openings for sewage intake. Further  wastewater from the aeration tank into the clarifier where the slurry is separates from the water under the force of gravity. Next, the sludge is taken back to the aeration tank via further pipes.


The purified water can then flow back into a small or large river if there is one – obviously via a canal.


Water is conveyed as steam Wastewater treatment plants  These include rainwater overflow basins, rainwater retention basins and retention soil filters. After or during a heavy rain the water intake capacity and cleaning capacity of the plant  this from happening, a rainwater overflow basin is built outside the plant with the purpose of providing interim storage for  water management association  hand, a rainwater retention basin can be used for the short-term storage of large water volumes  in the form of steam. The water rushes into the basin within a short period of time, is collected and is then gradually released into the body of water via a choke, i.e. a relatively small pipe.” This avoids surge flushes, says the association, and thus harm to wildlife in the body of water.


EU standards cause pressure to act


Many European countries are now under pressure to act, particularly in Eastern Europe.  facilities must meet EU


standards. This means expanding and modernising existing wastewater treatment plants as well as building new ones. Also, money has to be invested in expanding sewer systems. So, as we can see, the demand for pipes is clearly as strong as ever.


Press Contact 2016:


Petra Hartmann-Bresgen M.A. Ulrike Osahon Tel.: +49 (0)211/4560-541/-992 Fax: +49 (0)211/4560-87 541 E-Mail: HartmannP@messe- duesseldorf.de


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IMT March 2016 31


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