During industrialization, the river Emscher had been regulated embanked and used as a sewer. The sewer catchment area covers 430 sqkm with 2.4 million people living in it.
The project aims at revitalizating the Emscher river. For that purpose following works will be carried out within the next years:
- Construction of a main collector, length 42 km, DN 1400 - 2800, in a depth of 10 - 30 m
- Design and construction of more than 70 access shafts made of highly corrosion-resistant concrete with diameters from 9.5 m to 25 m
- Design of all structures and traffic facilities, structural design, technical equipment and mechanical engineering
- Final design, preparation and assistance during tendering procedure