Stadtentwässerung DresdenWe 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 assets

582 million Euros

annual turn over84 million Euros

405 employeesamong them approx. 32 apprentices

technical staff258 employees

commercial staff and management

115 employees

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

separated system

combined system

Two main collectorsalong the river Elbe

STPDresden-Kaditz

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 of56,000 cubic meters

Flood protection

Flood pumping station Stetzsch: 1,2 m³/s

Flood pumping station Kläranlage Kaditz: >9 m³/s

Flood pumping station Johannstadt (ab 2010): bis 18 m³/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 canalizationbetween 1990 and 2010

326 million Euros53 % reconstruction47 % extension

Investments in the Sewage treatment plantsbetween 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

120 Tm³/d

56 million m³/a

1500 m³/d

50 tTS/d

hydro energy

heat energy from

wastewater solar power

geothermics

biogas

An innovative energy conceptsaves money and protects the environment

Our solar power plant ison 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