ConSedTrans Method Continuous Sediment Transfer A way to overcome the problem of Sedimentation

Transcription

1 ConSedTrans Method Continuous Sediment Transfer A way to overcome the problem of Sedimentation German American Chambers of Commerce Round Table, Milwaukee, USA, Dr. Dietrich Bartelt, DB Sediments, Germany

2 DB Sediments GmbH Based on Environmental Know how Founded on in Duisburg, Germany Founders experts each with more than 20 years of international utility back ground, project management, renewable energies Management experience, environmental leadership International research programs since 1994 (i.e. 5th EU FWP, ) Innovation Management Environmental Technology Made in Germany Headquarter at Tectrum Technologie Zentrum GACC, Midwest USA, October

3 Missing Retention Volume Increasing Flood Risk GACC, Midwest USA, October

4 The Use of Water An Impact to the Eco-system Causes sedimentation and siltation GACC, Midwest USA, October

5 The Two Sides of Sediment 1. Upstream: Sediment Surplus 2. Downstream: Sediment Deficit GACC, Midwest USA, October

6 Problems without Sediment Example: Sedimentdeficit River Rhine Sedimentdeficit D/NL-boarder: about t/a artificial adding of Sediments about t/a Locks Iffezheim: about t/a Adding Sediments is expensive 2012: WSA Duisburg 24 Mio. Source: Alpreserve *, Bundesanstalt für Wasserbau (Koblenz), Hülskens Wasserbau (Wesel) WSA DU, GACC, Midwest USA, October

7 Wave Dynamics Qualitative Change with/without Sediment Transport Wave without Sediment Wave with Sediment GACC, Midwest USA, October

8 A river is an Eco-system Sediments are an integral part of that system Source: Global Water System Project GACC, Midwest USA, October

9 Sediment Deficit Coast Erosion (e.g. Egypt, ) Source: Google Maps (2011) GACC, Midwest USA, October 2013

10 Mississippi River System Decoupling of water and sediment flows Quelle: Meade, R. H. (2010). Sediment Transport and Deposition in Rivers: The Case for Non-Stationarity. In World Bank Group (Ed.): World Bank Document, A REVIEW OF SELECTED HYDROLOGY TOPICS TO SUPPORT BANK OPERATIONS. Papers from the Workshop (pp , Annex)., National Geographics, May 2013 GACC, Midwest USA, October

11 ConSedTrans Method System Sensitive Solution - Continuous Transfer of Sediments GACC, Midwest USA, October

12 RWE Innogy GmbH Continuous Sediment Management in Olsberg, Germany GACC, Midwest USA, October

13 Suitable equipment System Sensitive Solution automated vessel size 1 - electric driven - depth up to 40 m dredge vessel size 2 - diesel driven - depth up to 15 m manual small dredge vessel Larger/other/additional and customized equipment - electric driven upon request: - depth up to 8 m - electric or diesel driven - dredging depth up more than 200 m - unlimited capacity and/or sediment transfer range GACC, Midwest USA, October

14 Risk Analysis Existing and Projected Dams Assessment of the original storage volume - by processing of the original layout of the reservoir Determination of - the lost, silted or sedimented volume of the reservoir, - the silting rate of the dam, and - the estimation of the probable dam life, under consideration of the necessary operational range of the reservoir. Furthermore, an analysis will comprise - possible consequences, like the blockage of the bottom outlet of the dams by sliding sediments and - risk of flooding caused by the reduction of the retention volume of the reservoir. GACC, Midwest USA, October

15 Roseau Reservoir St. Lucia Risikanalysis / Rehabilitation Dam/Reservoir GACC, Midwest USA, October

16 Final Remarks Dramatic developing decrease of global storage capacity for water The River is an Ecosystem - Sediments are an important part of the system There is an urgent need for sediment management in rivers and reservoirs The impact of using water can be compensated by continuous sediment transport DB Sediments can provide a system sensitive solution There is no economic solution without an ecological solution The ConSedTrans- Method can contribute to handle the risk of sedimentation and siltation, flooding, soil and coast erosion, and saltation of groundwater GACC, Midwest USA, October 2013

17 If you cut the transport of sediment in a river you kill life in the river, as well as in the delta area of the river in the ocean. Juan Pablo Orrego Silva, Alternative Nobel Prize Winner, Bonn, Germany, DB Sediments GmbH Bismarckstr. 142 D Duisburg, Germany T F info@db-sediments.com GACC, Midwest USA, October 2013