wasserverband eifel rur - june 2013 annex 6
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TRANSCRIPT
Reservoir System Rurtalsperre
Obersee (drinking water) Rurtalsperre Hauptsee Oleftalsperre (drinking water) Urfttalsperre
DROP 2013-06-19UB 4.5 Brands
WVER service area:Rur catchment area
treatment of stormwater and rainwatercatchment of Obersee
stormwater overflow: annual discharge rate 15 % soil filter retention tank: (98 % hydraul. efficiency) rainwater treatment basin (Einruhr)
catchment of Hauptsee stormwater overflow: annual discharge rate 25 %
Rurtalsperre: requirements
waste water treatment plants: reduction of microbes reduction of phosphorus (0,2 mg/l Ptot in the effluent = monitoring value water authority)
Obersee
Hauptsee
DROP 2013-06-19UB 4.5 Brands
The Oberseecatchment
measures:
uv disinfection of effluent from wwtps improvement of the Konzen wwtp(membrane bioreactor) building of soil filter retention tanks cooperation program with farmers installation of sewer system in small communities reduction of incorrect connections to the sewer and of infiltration water
soil filter retention tank + uv disinfection (Konzen)
DROP 2013-06-19UB 4.5 Brands
measures
Einruhr wwtp: changing the discharge from Obersee to Hauptsee closing down of two small wwtps rain water treatment baisin improvement of the Woffelsbach wwtp (membrane bioreactor, sewer pipe run along lake bottom collects wastewater from the former Rurberg wwtp) decrease of the storm water overflow rate
Rurtalsperre:
Obersee
Hauptsee
DROP 2013-06-19UB 4.5 Brands
Rurtalsperrewater quality
1998 2000 2004 2011 2012
Obersee 2,30 2,13 1,84 1,91 n.b.
Hauptsee 1,93 1,69 1,60 1,40 1,60
trophic level trophic index
oligotrophic 0,5 – 1,5
mesotrophic 1,6 – 2,5
eutrophic 1
eutrophic 2
2,6 – 3,0
3,1 – 3,5
polytrophic > 3,5
Methode: nach LAWA (2001)data: MUNKLV project „Maßnahmen zur Mnimalemission in den Rursee“,
LANUV, WVER
DROP 2013-06-19UB 4.5 Brands
Oleftalsperredrinking water reservoir
objective:enlargement of hypolimnion during summer to avoid plankton avoid manganesein raw water
DROP 2013-06-19UB 4.5 Brands
Oleftalsperredrinking water reservoir
raw water[m. a. s. l.]
430437,5445
452,5
[m a
bove
sea
leve
l]
temperature
temperature [°C]
DROP 2013-06-19UB 4.5 Brands
Oleftalsperredrinking water reservoir
raw water[m. a. s. l.]
430437,5445
452,5
[m a
bove
sea
leve
l]
Oleftalsperre 2011turbidity
turbidity [fnu]
DROP 2013-06-19UB 4.5 Brands
Oleftalsperredrinking water reservoir
raw water[m. a. s. l.]
430437,5445
452,5
[m a
bove
sea
leve
l]
Oleftalsperre 2011oxygen
oxygen content [mg/l]
DROP 2013-06-19UB 4.5 Brands