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Wasserverband Eifel Rur - june 2013 annex 6

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Wasserverband Eifel Rur - june 2013 annex 6

  1. 1. DROP 2013-06-19 UB 4.5 Brands WVER service area: Rur catchment area Reservoir System  Rurtalsperre  Obersee (drinking water)  Rurtalsperre Hauptsee  Oleftalsperre (drinking water)  Urfttalsperre
  2. 2. DROP 2013-06-19 UB 4.5 Brands Rurtalsperre: requirements Hauptsee Obersee treatment of stormwater and rainwater catchment 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 % waste water treatment plants:  reduction of microbes  reduction of phosphorus  (0,2 mg/l Ptot in the effluent  = monitoring value water authority)
  3. 3. DROP 2013-06-19 UB 4.5 Brands The Obersee catchment soil filter retention tank + uv disinfection (Konzen) 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 
  4. 4. DROP 2013-06-19 UB 4.5 Brands Rurtalsperre: Hauptsee Obersee 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 
  5. 5. DROP 2013-06-19 UB 4.5 Brands Rurtalsperre water quality 1998 trophic level 1,6 – 2,5 eutrophic 1 3,1 – 3,5 polytrophic > 3,5 2012 Obersee 2,30 2,13 1,84 1,91 n.b. Hauptsee 1,93 1,69 1,60 1,40 1,60 2,6 – 3,0 eutrophic 2 2011 0,5 – 1,5 mesotrophic 2004 trophic index oligotrophic 2000 Methode: nach LAWA (2001) data: MUNKLV project „Maßnahmen zur Mnimalemission in den Rursee“, LANUV, WVER
  6. 6. DROP 2013-06-19 UB 4.5 Brands Oleftalsperre drinking water reservoir objective: enlargement of hypolimnion during summer to  avoid plankton  avoid manganese in raw water
  7. 7. DROP 2013-06-19 UB 4.5 Brands Oleftalsperre drinking water reservoir temperature [m above sea level] raw water [m. a. s. l.] 430 437,5 445 452,5 temperature [°C]
  8. 8. DROP 2013-06-19 UB 4.5 Brands Oleftalsperre drinking water reservoir Oleftalsperre 2011 turbidity [m above sea level] raw water [m. a. s. l.] 430 437,5 445 452,5 turbidity [fnu]
  9. 9. DROP 2013-06-19 UB 4.5 Brands Oleftalsperre drinking water reservoir Oleftalsperre 2011 oxygen [m above sea level] raw water [m. a. s. l.] 430 437,5 445 452,5 oxygen content [mg/l]

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