10.4122/1.1000001084
Karpf, C.
C.
Karpf
Krebs, P.
P.
Krebs
Assessment of extraneous water inflow in separated sewer networks
DTU Library, Technical University of Denmark (DTU)
2005
Conference full text
Extraneous water
infiltration
rehabilitation
separated sewer system
Dresden University Of Technology, Institute For Urban Water Management
Institute For Urban Water Management
Dresden University Of Technology
2005
en
10.4122/1.1000001083
application/pdf
Separate sewer systems provide due to the separate transport and treatment of waste water and rain water an efficient sewerage technology. But the advantage compared to combined system technology gets lost if the input of extraneous water exceeds the capacity of the system. Especially the input of rainwater into the waste water pipes depending on the drained area is responsible for an overload of the sewer system and the wastewater treatment plant (WWTP). In the paper the input of extraneous water induced by groundwater and rainwater in different rural catchments in the City of Dresden is assessed. On the base of a hydrodynamic network model a case study is carried out for one of these catchments. The analysis of the current status of the studied area allows the identification of rehabilitation activities and, furthermore, gives an indication on their extent and effects.