Deposit of high toxic waste in underground storages

Transcription

1 Deposit of high toxic waste in underground storages Dr. Roland Liesenberg II Miteco Forum Belgrade November 2008 K+S Entsorgung GmbH Bertha-von-Suttner-Str Kassel, Germany Tel

2 Corporate Structure and Figures 2007

3 Range of services Underground waste reutilization underground reutilization of waste with suitable properties (essentially flue gas cleaning residues) Underground waste disposal solid waste that should not be allowed to enter the biocycle and therefore cannot be stored above ground or incinerated Building material recycling recycling of construction and demolition waste and excavated soil Smelting salt sales and salt slag recycling supply of smelting salts to the secondary aluminium industry, collection/processing, collection/ processing of salt slag

4 Disposal Sites and Figures 2007 Pioneer of underground waste disposal Since 1972 we dispose of hazardous waste in own plants: 4 plants for the reutilization of waste underground 2 plants for the disposal of waste underground 1 plant for the reutilization of building material 1 plant for the recycling of salt slag Waste Management and Recycling

5 Our high capacity is your security K+S is the supplier with the biggest plant capacities worldwide Herfa-Neurode (UTD) metric t/yr technical capacity Zielitz (UTD) Bernburg (UTV) Hattorf/ Wintershall (UTV) Unterbreizbach UTV metric t/yr metric t/yr metric t/yr metric t/yr All plants are certified and comply with the highest technical standards

6 Partner for Europe K+S disposes waste from the following countries Austria Serbia Lithuania Scandinavia Belgium Italy Luxembourg Slowenia Croatia Bulgaria Netherland Spain France Latvia Poland Switzerland Our Strength: Pioneer of underground disposal Long experiences at the european market Recognised and long-term secure actions High competence with authorizationprocedure (notification) Analysis of waste by experienced partners Transports by experienced partners Packaging and logistics solutions

7 Origin of the waste 20 % Metal processing industry (case hardening shops, electro plating plants, smelters) 20 % Residues from chemical industry 30 % Residues from flue gas purification in incineration plants 5 % Electrical industry (transformers, capacitors) 25 % leaching residues and soil cleaning (building rubble and ground excavation)

8 Prerequisites for the underground repository Storage of waste requires a disused, excavated area of a mine, remote from the mineral extraction area. The area, in which waste is to be deposited, has to be able to be sealed off from the area where extraction is taking place. The cavities resulting from mineral extraction have to remain open. There must be no backfill obligation. The mined cavities have to be stable, they must remain accessible even after a prolonged time. The mine, in which the waste is stored, has to be dry and free of water. The cavities, in which the waste is stored, have to be sealed off from water-bearing layers, which means that the waste is separated from the biosphere for all time.

9 Geological cross section, barriers

10 Conditions for waste to be stored underground not explosive not spontaneously combustible no release of hazardous gases not infectious no further chemical reactions no increasement of volume no pungent smell no release of liquids no reaction with the salt rock to harmful effect

11 Multibarrier system Herfa-Neurode 1. Natural Barriers approx. 300m Salt rock, gastight approx. 100m Clay layers, watertight Approx. 500m Sandstone 2. Artificial Barriers Packaging Walling in Isolation of zones Filling the shafts watertight

12 Disposal of contaminated sites Large experience concerning the disposal of contaminated soil contaminated building rubble Project Type of waste Quantity Chlor I+III Bitterfeld, Germany Chlor-alkali-electrolysis plant Buna, Sow-Leuna, Germany Chlor-alkali-electrolysis plant Holzweissig drum storage Mercury-contaminated soil, building material, steel Mercury-contaminated soil, building material, steel Elemental red phousphorus, arsenic (conditioned before storage) tonnes tonnes tonnes

13 Examples for Delivery

14 Acceptance control

15 Transport by fork-lifter to the shaft

16 Transport underground

17 Stacked and spreaded BigBags

18 Thank you for your attention Dr. Roland Liesenberg