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

Result at Kronsberg-housing-area: 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

Result at Kronsberg: Example Soil Management 700,000 m3 excavated soil re-used, making about 100,000 lorry journeys unnecessary and thus saving 1,200 tonnes of CO2 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 household waste organics bulky waste sewage sludge street sweepings ca. 69,000 t/a ca. 1,000 t/a ca. 51,000 t/a ca. 38,000 t/a ca. 90,000t /a ca. 15,000 t/a ca. 16,000 t/a ca. 70,000 t/a composted ca. 5,000 ca. 215,000 t/a mechanical residual waste treatment ca. 100,000 ca. 100,000 ca. 15,000 ca. 100,000 t/a biological treatment since 2006 ca. 100,000 t/a waste to energy since 2005 ca. 5,000 ca. 35,000 ca. 70,000 ca. 25,000 ca. 3,000 compost ca. 35,000 t/a slag ca. 25,000 t/a hazardous waste landfill ca. 3,000 t/a recyclables ca. 20,000 t/a landfill ca. 70,000 t/a 1 1 1