Water Management and Technology

In 2002, as a result of high groundwater tables and sandy subsoil, Nakheel project developers decided on the ecological and cost-effective Roediger Vacuum Sewer system. Using only one vacuum station, the sewerage needs of the entire area were taken care of. Because of low excavation depths, it was possible to avoid expensive drains, excavation supports and machine parks, necessary in a conventional gravity sewer system.

To increase appeal to investors, the Wierzchoslawice local authorities opted for a RoeVac® vacuum sewer system. With technical equipment worth over 2 million Euro, this project is the biggest individual investment in vacuum sewer systems to date in Poland. Due to the problems of loose, sandy and gravelly subsoil, a conventional gravity sewer system would have required 139 pump stations and a sewer network nearly 100 km long.

In order to minimize the area taken up by irrigation and drainage channels, it was decided to install a RoeVac® vacuum sewer system, which requires a low excavation depth, is completely impermeable and eliminates offensive odors and contamination by vermin and rats. Since this area has a high groundwater table, installing a gravity sewer would have been very time-consuming and cost-intensive.