Waste management in the HannoverRegion Waste Collection in

Waste management in the Hannover-Region

Waste Collection in the Past Waste management has been a municipal responsibility for 100 years.

Waste Collection Today • • • Since 2003, a regional responsibility serving 1. 1 million people Approx. 1, 000 employees Public service enterprise (no privatisation!)

Hannover Lahe Waste Tip • Central waste tip since 1937 • Monitoring of seepage water and gas since 1990 • No more unprocessed waste is dumped since 2005.

Reduction Waste by Factor 5

Dramatic reductions in waste quantities (1989 - 2002) c Waste avoidance (- 380, 000 t) g Dumping of soil, building rubble, sewage sludge (- 340, 000 t) g Recycling, composting of organic waste (+ 72, 000 t) g Recycling of glass, paper, packaging and scrap metal (+ 41, 700 t) Decrease in waste-to-disposal from c. 1, 000 to 200, 000 tonnes p. a. in the City of Hannover

Household Waste Pre-sorting Result at Kronsberg-housing-area: Approx. 30% reduction in waste volumes (City: 219 kg per household p. a. , Kronsberg: 154 kg per household p. a. )

Paper • • • 4, 500 paper collection bins in the city plus weekly kerbside collections 40, 600 tonnes p. a. = 79 kg per inhabitant

Glass • • • More than 400 bottle banks in the city 16, 800 tonnes p. a. = 33 kg per inhabitant Decrease due to new regulations on returnable containers this year

Packaging (Yellow Sack) • 5, 300 collection bins • plus kerbside collection every other week • 11, 000 tonnes p. a. = 21 kg per inhabitant

Composting • 1998 establishment of organic waste collection system • 2002 18, 500 t (35 kg per inhabitant) • plus 32, 000 t green waste from plant nurseries and gardens

Waste Concept Home composting

Great potential for commercial waste reduction

Example Soil Management Result at Kronsberg: 700, 000 m 3 excavated soil re-used, making about 100, 000 lorry journeys unnecessary and thus saving 1, 200 tonnes of CO 2 emissions

Example: Construction Sites • • • Waste sorting on site Recycling of waste from demolition and modernisation projects 1989 - 2002, reduction in rubble and building site waste of around 170, 000 tonnes p. a.

City of Hannover Waste Treatment in 2002 commercial waste construction waste organics ca. 69, 000 t/a ca. 70, 000 t/a composted ca. 1, 000 t/a ca. 51, 000 t/a bulky waste household waste sewage sludge ca. 38, 000 t/a ca. 90, 000 t /a ca. 15, 000 t/a street sweepings ca. 16, 000 t/a ca. 215, 000 t/a mechanical residual waste treatment ca. 5, 000 ca. 100, 000 t/a biological treatment since 2006 ca. 15, 000 ca. 100, 000 t/a waste to energy since 2005 ca. 5, 000 ca. 35, 000 ca. 70, 000 compost ca. 35, 000 t/a landfill ca. 70, 000 t/a ca. 25, 000 slag ca. 25, 000 t/a ca. 3, 000 hazardous waste landfill ca. 3, 000 t/a recyclables ca. 20, 000 t/a