1 / 19

How to deal with 200 mln m3 contaminated river sediments

How to deal with 200 mln m3 contaminated river sediments. Hilda van de Laar Province of Gelderland The Netherlands. Structure of presentation. Dutch river system The problem Different approaches New solution Conclusion. Rhine and Meuse catchment areas. Dutch river system. river.

shima
Download Presentation

How to deal with 200 mln m3 contaminated river sediments

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. How to deal with 200 mln m3 contaminated river sediments Hilda van de Laar Province of Gelderland The Netherlands

  2. Structure of presentation • Dutch river system • The problem • Different approaches • New solution • Conclusion

  3. Rhine and Meuse catchment areas

  4. Dutch river system river flood plain dike

  5. The problem: flooding Usual level Flood wave

  6. The problem: flooding Dikeburst? Evacuation

  7. Approach: higher dikes?

  8. Approach: more space for water

  9. New problem • excavate few hundred million m3 soil • contaminated • how to deal with it? • 7 local governments cooperated in finding solutions

  10. Standard solution • clean soil can be reused in flood plain • polluted soil has to be cleaned or dumped in large scale sites

  11. Consequences standard solution • very expensive • spatial problems • not suitable

  12. New solution - 1 • take into account recontamination level • less polluted: reuse unconditionally in flood plain

  13. New solution - 2 • take into account recontamination level • more polluted: in smaller sand excavation pits in flood plain

  14. Consequences new solution • solution within river system itself -no more spatial problems • save several billion €

  15. Political considerations • many parties, many interests • clearly define main goal • accept some pollution will remain

  16. Result Large scale measures: excavation of flood plain

  17. Result More space for water

  18. Conclusions • standard solution was more ambitious, but impracticable – no environmental benefit • new solution less ambitious but enables large scale measures – benefit for environment

  19. Result History

More Related