The riverbank filtration (RBF) and managed aquifer recharge (MAR) site Dresden-Hosterwitz is operated by the DREWAG NETZ GmbH and located on the floodplain of the Elbe River. The Elbe River is a transboundary perennial river and federal waterway. With a length of 1.097 km the Elbe River originates in the Czech Republic and flows northwest into the North Sea.
The water works operates two separate treatment trains: the RBF treatment train and the MAR treatment train. If the daily production is less than 20 000 m3, RBF will be the main treatment before cascade aeration, granular activated carbon (GAC) filtration, pH-adjustment and disinfection with chlorine. The production capacity can be increased to 72 000 m3/d through five open recharge basins supplied with pretreated Elbe River water (coagulation and open multimedia sand filtration).
Water is recovered with 111 siphon wells and two separate well groups consisting of 8 and 28 wells equipped with submersible pumps. Monitoring in the Pilot Action area is based on 5 sampling points starting from Elbe River to disinfected water to obtain information on water quality and its changes during the treatment process.
Cluster 1: Surface water
Pilot Action responsible: ZAFT, PP11