Stadtentw채sserung Dresden We will clear it up for you!
Dresdens ppp-model  private public partnership by the capital of Saxony and GELSENWASSER AG
More than 100 years of experience  1870 the planned development of the sewer system started  1910 the waste water treatment plant Dresden-Kaditz was put into operation
Some facts about Dresden
About us  main tasks
Our capital 405 employees among them approx. 32 apprentices
technical staff 258 employees
commercial staff and management 115 employees
assets 582 million Euros
annual turn over 84 million Euros
Solid tools for the job 1,750 kilometer: length of all sewers central treatment plant Dresden-Kaditz 740,000 population equivalent
3 smaller local sewerage plants Two main collectors along the river Elbe
STP Dresden-Kaditz
separated system combined system
Our catchment area
Overflow management system  2 large storm water overflow tanks (in sum with a capacity of 36,000 cubic meters)
 14 channels with a total storage capacity of 56,000 cubic meters
Flood protection
Flood pumping station Stetzsch: 1,2 m続/s
Flood pumping station Kl辰ranlage Kaditz: >9 m続/s
Flood pumping station Johannstadt (ab 2010): bis 18 m続/s
In the Eighties of the last century the river Elbe was one of the most polluted European rivers
Foto: Waltraut Kossack
Investments in the canalization between 1990 and 2010  326 million Euros 53 % reconstruction 47 % extension
Investments in the Sewage treatment plants between 1990 and 2010  268 million Euros
The fees in Dresden
1.69 Euros per year for every square meter sealed surface which is connected with the public sewer system
1.73 Euros per cubic meter used drinking water
Environmental Services for a adequately price
An innovative energy concept saves money and protects the environment 50
tT
S/
biogas d
00 5 1 続/ d m
heat energy from wastewater
hydro energy
solar power
geothermics 120 Tm続/d 56 million m続/a
Our solar power plant is on the roof of the rainwater tank Dresden’s second largest solar power plant with an output of 190 kWh
in 2009 the plant produced an amount of 170 MWh that correlates with the annual need of 45 families and with 0.7 percent of the total consumption of the STW Kaditz (cash-equivalent is 95,000 EUR)
the investment (900,000 EUR) will be refinanced within 12 years
Hydro energy by turbine in the STW outlet use of the difference between the water levels of the secondary clarifier and the river Elbe in 2009 the plant produced about 672 MWh energy, which correlates to the consumption of 170 families
which also correlates to 2.7 percent of the total consumption of the STW Kaditz feeding the hydro-electric power into our own grid reduces the energy costs
Heat energy from waste water new construction of the fire and civil protection center
heat supply: 750 MWh/year
coolness supply: 100 MWh/year
annual heat demand will be covered up to 45 percent
annual coolness demand will be covered up to 100 percent
Extension of the sludge treatment new construction of a biogas plant technical solution: digestion towers with a volume of 2x10,500 cubic meters
combined heat and power unit fluid sludge utilization generation of biogas with an energy equivalent of 33,573 MWh/year
including 12,758 MWh electric power
reduction of sludge mass by about 30 percent
Commitment for following generation