Martina Rapthel, Abfallwirtschaft GmbH Halle-Lochau, Germany

Part 1: Introduction to the „Halle-Lochau“ landfill

Part 2: Problems of landfills below the water table

Part 3: Research and development project

~ 1000 m

Eastpart296 ha

West-part

184 ha

Groundwater lowering system

„Revolution Point“ area „Halle-

Lochau“landfill

River

Direction of groundwater flow

N S

~ 100 m~ 30 m

Household waste

Commercial waste

Groundwater lowering system

Leachate collection system

Administrative building including waste control departments

Northern landfill area: household waste

Southern landfill area: commercial waste

Eastern landfill area: sediments

Overview of the „Halle-

Lochau“landfill2003

Generated lake in wide parts of the former open cast mining including

landfill body

Stopping of the goundwater lowering operation in „Halle-Lochau“ without additional

measures

Investigations for the sustainable closure of landfills which were installed in areas of the former open coal mining carried out at the example “Halle-Lochau” landfill

Aims of the research project:

Development of measures for closure, aftercare, recultivation and reuse of landfills below the water table

• least cost solution• technically feasabale solution• environmentally friendly solution• sustainable solution

Option 5

East Part

West Part

Option 2

East Part

West Part

Option 3

East Part

West Part

Option 4

East Part

West Part

Option 1

East Part

West Part

Option 6

East Part

West Part

Fulfilling of the East Part

Fulfilling of the West Part

Lake

East-Part

West-

Part

InnenkippeGenerated lake

Groundwater collection

Groundwater flow to the nearby river