10.4122/1.1000001564
Frechen, F.
F.
Frechen
Schier, W.
W.
Schier
Felmeden, J.
J.
Felmeden
Plant-covered retention soil filters (RSF) Fulda Fellenweg for advanced CSO treatment - a ten year field report
DTU Library, Technical University of Denmark (DTU)
2005
Conference full text
biological treatment
combined sewer overflow (CSO)
long-term operation
nutrient removal
retention soil-filter (RSF)
University Of Kassel, Department Of Environmental And Sanitary Engineering (DESE)
2005
en
10.4122/1.1000001563
application/pdf
Massive improvement of municipal wastewater treatment during the last 20 years has reduced the pollution load of our water bodies significantly. At the same time, pollution load resulting from combined sewer overflows (CSO) increased which made appropriate countermeasures necessary. Up to now, this is usually done by introducing combined wastewater basins in accordance to the German ATV Standard A128 (ATV, 1992), which deals with design and construction of this type of installations. However, the effect of these installations is limited, according to their specific size, and especially the reduction of nutrient compounds is not sufficient, as these installations may include sedimentation as a first treatment process which does not affect the soluble substances at all. The only technology that is capable of reducing settable compounds as well as soluble compounds is the plant covered retention soil filter (RSF). First RSFs were built in Germany about 10 years ago at a few sites to treat storm water overflows from combined sewer systems in order to meet advanced standards. This paper describes one of the first German RSF plants in Fulda (Federal State of Hessia) and discusses the results of an operation period lasting for more than ten years.